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Legal Documents

Terms and Conditions

Hampshire Build · Governed by English law

Key Points — Read Before Proceeding

  • All prices exclude VAT — unless specifically stated otherwise
  • Deposit payment (£250 + VAT) constitutes acceptance of these terms — no signature required
  • Full package fee due upon first draft drawings — payable before design consultation
  • We provide extension design services as qualified architectural technicians
  • Cost estimates are for guidance only and are not binding
  • Fixed-fee packages cover specified deliverables only
  • All packages include one on-site measured survey — design consultations are conducted remotely as standard
  • Additional site inspections: £150 + VAT per hour — minimum 3 hours, includes travel time
  • Planning approval is never guaranteed — councils make final decisions
  • Structural designs are based on visual inspection only — amendments may be required once hidden areas are exposed during construction — charged at £150 + VAT per hour, minimum 3 hours
  • M&E layouts are not included in any package — Hampshire Build provides shell and core design only. M&E to be agreed on site between client, contractor, and building control
  • Resubmission following planning refusal is not included in any package — fixed fee of £450 + VAT applies
  • Building regulation drawings are prepared to a Building Notice standard — a Full Plans application may generate additional Building Control requirements, which are outside the scope of the standard package fee and charged at £150 + VAT per hour, minimum 3 hours

Contents

1

About Us

Hampshire Build provides extension design services across Hampshire, Hertfordshire, Surrey, Berkshire, Buckinghamshire, Oxfordshire, West Sussex, Wiltshire, and surrounding counties. We are qualified architectural technicians providing planning drawings, building regulation drawings, and related design services for residential extensions. Travel time for additional site visits is charged as part of the hourly rate and reflects actual travel time from our operating base.

By using our website or services, you agree to these terms.

2

Pricing and VAT

VAT Notice

All costs, prices, and fees stated on this website, in proposals, or in communications are exclusive of VAT unless explicitly stated as "including VAT."

VAT is charged at the current UK rate (currently 20%) and will be added to all invoices.

Council fees, building control fees, and third-party costs (structural engineers, ecologists, etc.) are separate and payable directly to those parties unless we specifically agree otherwise in writing.

3

Cost Estimates and Calculator

Important Notice About Cost Estimates
  • All cost estimates provided through our website, cost calculator, or proposals are for guidance only
  • Estimates are not quotes, offers, or binding commitments
  • Actual build costs depend on many factors including: specification, materials, site conditions, contractor availability, market conditions, and unforeseen works
  • We cannot be held liable for any difference between estimated and actual costs
  • Build cost estimates are based on typical shell and core construction and exclude finishes, fixtures, kitchens, bathrooms, decoration, and landscaping
  • You should always obtain detailed quotations from contractors before committing to any construction work

Our Extension Cost Calculator and any cost guidance we provide is intended to help you plan and budget. It should not be relied upon as an accurate forecast of actual costs. We recommend obtaining at least two contractor quotes before proceeding with construction.

4

Our Service Packages

We offer fixed-fee packages with clearly defined deliverables. Our package prices are fixed for the specified scope of work.

Essential Package £1,350 + VAT

Included

  • Initial consultation (up to 30 minutes)
  • On-site measured survey with report
  • Planning drawings: site plan, floor plans, and elevations
  • Planning application submission to your local authority
  • One round of revisions following feedback

Not Included

  • Building regulation drawings
  • Structural calculations
  • Additional site visits
  • M&E layouts — shell and core design only; M&E agreed on site with contractor and building control
  • Third-party fees: council planning fees, building control fees, and statutory charges
  • Resubmission following planning refusal (fixed fee £450 + VAT)
Pre-Build Package £1,950 + VAT

Included

  • Everything in the Essential Package
  • Building regulation drawings (full technical set)
  • Structural calculations by qualified engineer
  • One round of revisions on all drawings

Not Included

  • Schedule of works or specifications
  • Contractor vetting or liaison
  • Site inspections during construction
  • M&E layouts — shell and core design only; M&E agreed on site with contractor and building control
  • Third-party fees: council planning fees, building control fees, and statutory charges
  • Resubmission following planning refusal (fixed fee £450 + VAT)
Premium Package £2,950 + VAT

Included

  • Everything in the Pre-Build Package
  • Detailed schedule of works with specifications
  • Contractor vetting — tender documentation to 2 vetted teams
  • Proposal comparison to support your decision
  • Client-focused contract template

Not Included

  • Site inspections during construction
  • Contract administration during build
  • Interior design or landscaping
  • M&E layouts — shell and core design only; M&E agreed on site with contractor and building control
  • Third-party fees: council planning fees, building control fees, and statutory charges
  • Resubmission following planning refusal (fixed fee £450 + VAT)
Scope of Design: Shell and Core Only — M&E Not Included

Hampshire Build provides shell and core architectural design only. Our drawings cover the structure, layout, and external appearance — walls, openings, roof, floor levels, and overall form.

Mechanical and electrical (M&E) layouts are explicitly excluded from all packages. This includes, but is not limited to: electrical circuit design, lighting layout, socket and switch positions, consumer unit specification, heating system design, boiler relocation or upgrades, radiator positions, underfloor heating design, plumbing runs, soil and waste pipe routing, ventilation and MVHR design, and any associated calculations.

M&E requirements are to be agreed directly between the client, their chosen contractor, and building control during the construction phase. It is the client's responsibility to ensure M&E works comply with Part P (electrical) and Part L (energy efficiency) of the Building Regulations, and that appropriately qualified trades are engaged.

Change of Brief After First Draft Drawings

The package fee covers one design iteration based on the brief provided at the time of survey. Where a client materially changes their brief after first draft drawings have been issued — including changes to extension size, type, number of storeys, or position — this constitutes a change of scope and will be subject to additional fees charged at £150 + VAT per hour.

Site Surveys and Design Consultations

  • All packages include one on-site measured survey — at your property
  • Design consultations are conducted remotely — via phone, video call, or email — to keep costs down and provide flexible scheduling
  • In-person design meetings are not included in any package — and are not available as standard. Should a client require an in-person meeting, this will be treated as an additional site visit and charged at £150 + VAT per hour, minimum 3 hours, including travel
  • Further site inspections at the client's request — are chargeable at £150 + VAT per hour, minimum 3 hours (£450 + VAT), including travel time

Additional Services

Service Fee (excl. VAT)
Additional revisions (beyond included round) £150/hr
Additional storey added to scope £750
Loft conversion added to scope £950
Extra site visits or inspections £150/hr (min. 3 hrs, incl. travel)
Party Wall Notice £250 per adjoining owner
Water Board Build Over Agreement £650
Building Control Application £450
Planning resubmission following refusal £450 (fixed fee)
Ad-hoc hourly work £150/hr
4a

Premium Package — Tender & Contractor Terms

This section applies exclusively to clients on the Premium Package and sets out the full scope, limitations, and conditions of the tender management service included within that package.

4a.1 Standard Tender Process Included

The Premium Package includes the management of one (1) standard tender process, comprising:

  • Preparation of a tender pack based on the approved planning drawings and building regulations drawings issued by Hampshire Build;
  • Distribution of the tender pack to two (2) contracting teams only;
  • Collection of contractor returns within the framework timeframe issued by Hampshire Build;
  • Comparison of returns received and provision of a tender summary report.

4a.2 Tender Returns — No Obligation to Guarantee Two Responses

Hampshire Build will issue tender documentation to two (2) contracting teams. However, Hampshire Build does not guarantee that both contracting teams will submit a return. Where only one (1) return is received within the framework timeframe, Hampshire Build's obligation under the tender process is fulfilled. Hampshire Build is under no obligation to:

  • Chase or re-engage a non-responding contractor;
  • Source or approach a replacement contractor to achieve two returns;
  • Extend the tender process beyond the framework timeframe to await a late return.

In such circumstances the client may proceed on the basis of the single return received, or elect to commission a further tender process at the rates set out in clause 4a.6. The decision rests solely with the client.

4a.3 Tender Framework Timeframe

Hampshire Build will issue a framework timeframe within which contractor returns are expected. This timeframe is indicative only and is not legally binding on any contracting team. Hampshire Build:

  • Cannot be held responsible for late or non-submission of tender returns by contractors;
  • Will not be liable for any delay to the client's project programme caused by a contractor's failure to return a tender on time;
  • Reserves the right to close the tender process at the expiry of the framework timeframe regardless of the number of returns received.

4a.4 Scope of Tender Documentation — Drawings Only

The tender pack and specification of works prepared by Hampshire Build relate exclusively to the works shown on the drawings supplied by Hampshire Build. The specification and schedule of works:

  • Cover only the items captured within the drawing set issued by Hampshire Build;
  • Do not include finishing items, client-specific fit-out items, landscaping, or any other works falling outside the drawn scope;
  • Are not exhaustive of all works the client may wish to undertake.

Any items, works, or finishing specifications not shown on the Hampshire Build drawings are entirely outside the scope of the tender documentation. It is the client's sole responsibility to discuss and agree any such additional items directly with their chosen contracting team on site. Hampshire Build accepts no liability for works, costs, or disputes arising from items outside the drawn scope.

4a.5 Amendments to Drawings After Tender Documents Issued — Mandatory Re-Tender

Where drawings are amended after tender documents have been issued — whether as a result of planning conditions, client-requested design changes, Building Control review requirements, or any other material alteration — and those amendments materially affect the scope, specification, or buildability of the project:

  • The original tender documents are immediately rendered void and shall not be relied upon by the client or any contractor as a basis for pricing or construction;
  • Hampshire Build reserves the right to require that a new, complete tender process is undertaken before construction commences;
  • The cost of a new tender process will be charged at the rates set out in clause 4a.6;
  • Hampshire Build accepts no liability for any contractor pricing or programme based on superseded tender documents.

4a.6 Additional Tender Process — Fee Schedule

Where a second or subsequent tender process is required for any reason, the following fees apply:

  • Additional tender process (preparation, issue, collection, and report): £450 + VAT per cycle;
  • Amended drawings required to update the tender pack: £150 + VAT per hour, minimum charge 3 hours (£450 + VAT minimum per instruction).

All additional fees will be confirmed in writing and must be agreed by the client before work recommences.

4a.7 Hampshire Build Approved Contractor Network — Vetting Procedure

All contractors used within the Hampshire Build tender process must have passed the Hampshire Build contractor vetting procedure prior to inclusion in any tender. The vetting procedure includes, but is not limited to, review of:

  • Public liability insurance (minimum £2,000,000 cover);
  • Employers' liability insurance where applicable;
  • Relevant trade accreditations and competent person scheme memberships;
  • Agreement to work under Hampshire Build's Terms & Conditions and payment schedule framework;
  • Satisfactory references and/or track record assessment.

Vetting is conducted at Hampshire Build's discretion and may take time to complete. Inclusion on the approved network is not guaranteed. Hampshire Build reserves the right to decline to include any contractor on the approved network without providing reasons.

4a.8 Client-Nominated Contractors — Vetting Required Before Inclusion

Clients who wish to include a contractor of their own choosing within the tender process may request to do so. However, the following conditions apply without exception:

  • The client-nominated contractor must complete and pass the Hampshire Build contractor vetting procedure in full before they may be included in any tender process;
  • The vetting process takes time and Hampshire Build cannot guarantee that a client-nominated contractor will pass vetting or complete it within the client's preferred timeframe;
  • A contractor who has not passed vetting will not be included in the tender process under any circumstances;
  • It is the client's responsibility to introduce the nominated contractor to Hampshire Build in sufficient time to allow vetting to be completed before the tender is issued.

Where a client-nominated contractor fails vetting, withdraws, or does not complete the vetting process in time, Hampshire Build will proceed with the remaining approved contractors. Clause 4a.2 applies in respect of any shortfall in tender returns.

4a.9 Post-Tender Client-Supplied Contractors — Not Accepted

Once the tender process has been completed and a tender report issued, Hampshire Build will not accept or process a contractor introduced by the client after that point as a substitute or replacement within the same tender cycle. Specifically:

  • Hampshire Build will not supply, adapt, or issue tender or specification documentation to a contractor introduced by the client after the tender process has closed;
  • Hampshire Build will not provide contract management documentation, schedules of works, or specification packages to any contractor who has not gone through the Hampshire Build vetting procedure;
  • Hampshire Build accepts no liability whatsoever for any contractor appointed by the client who has not been through the Hampshire Build vetting procedure, including for any defects, delays, cost overruns, or disputes arising from that appointment;
  • Any engagement by the client with a non-vetted contractor is entirely at the client's own risk.

If the client wishes to run a new tender process to include a contractor not previously considered, this constitutes a new tender cycle and fees will apply under clause 4a.6.

4a.10 Client's Own Contractor — Risk & Liability

Where a client appoints a contractor of their own choosing — whether or not that contractor has been through the Hampshire Build vetting procedure — the client accepts full responsibility for:

  • The contractor's performance, workmanship, programme, and conduct;
  • Verifying the contractor's insurances, accreditations, and financial standing;
  • Any costs, losses, or disputes arising from the contractor's appointment or performance;
  • Ensuring the contractor builds in strict accordance with the Hampshire Build approved drawings.

Hampshire Build accepts no liability for any loss, defect, delay, or dispute arising from any contractor relationship, whether or not that contractor was introduced through the Hampshire Build tender process.

4a.11 Hampshire Build Not a Party to the Building Contract

Hampshire Build is not a party to any contract entered into between the client and a contractor. Our role is limited to architectural design and tender management. We do not guarantee any contractor's price, programme, or workmanship. Clients are strongly advised to take independent legal and commercial advice before entering into any building contract.

5

Payment Terms and Contract Formation

Contract Formation

Payment of the deposit (£250 + VAT) constitutes acceptance of these Terms and Conditions. The proposal issued to you, together with these Terms and Conditions, forms the contract between you (the client) and Hampshire Build. No signature is required.

By paying the deposit, you confirm that you have read, understood, and agree to be bound by these terms.

Payment Schedule

Deposit £250 + VAT Payable before the measured survey takes place
Balance Remaining package fee Due upon issuance of the first draft drawings — must be paid before design consultation proceeds
Additional work As agreed Invoiced monthly or upon completion, payable within 14 days
Important Notes on First Draft Drawings

The first draft drawings represent our initial design based on your brief and our survey findings. These drawings may require amendments following your design consultation — they are not necessarily the final article. The design consultation is where we work together to refine and finalise the design to your requirements.

We accept bank transfer. Late payments will incur interest at 4% above the Bank of England base rate from the due date until payment is received. For business clients, late payment interest is charged in accordance with the Late Payment of Commercial Debts (Interest) Act 1998.

Hampshire Build reserves the right to suspend all work on a project where any invoice remains unpaid beyond 14 days of the due date. Where additional work has been undertaken beyond the package scope at the client's request, these fees remain payable regardless of whether the project proceeds to completion.

6

Project Timelines

Our Commitments
  • Measured Survey: We will complete your on-site measured survey within 10 working days of receiving your deposit payment
  • First Draft Drawings: We will issue your first draft drawings within 15–20 working days of completing the measured survey

These timeframes represent our commitment to you and are within our control.

Timelines After First Draft Drawings

We cannot be held accountable for project timelines after the first draft drawings have been issued. Timelines from this point forward depend on factors outside our control, including but not limited to:

  • Client response times — how quickly you provide feedback, approve designs, or make decisions
  • Design amendments — additional rounds of changes requested beyond the included revision
  • Planning authority processing — local authority decision times vary significantly — typically 8–12 weeks, sometimes longer
  • Building control processing — approval times vary by authority
  • Third-party dependencies — structural engineer availability, specialist reports, party wall matters
  • Planning objections or requests for information — councils may request additional information or neighbours may object

We will always work diligently to progress your project, but you acknowledge that these external factors are beyond our control and we accept no liability for delays arising from them.

7

What We Cannot Guarantee

Matter Our Position
Planning approval We submit applications professionally but councils make the final decision. While we have a high approval rate, we cannot guarantee any application will be approved. Resubmission following refusal is charged at £450 + VAT.
Building control approval Building control decisions are made by the relevant authority.
Construction costs Build costs are outside our control and depend on your chosen contractor, specification, and market conditions.
Project timelines after first draft As detailed in section 6, timelines after first draft drawings depend on external factors beyond our control.
Contractor performance Where Hampshire Build introduces clients to contractors from our vetted panel as part of the Premium Package, this introduction is provided as a convenience only. Hampshire Build does not warrant, guarantee, or accept any liability for the work, conduct, pricing, or performance of any contractor. Clients enter into contracts with contractors directly and at their own risk.
8

Structural Amendments During Construction

Important Notice Regarding Structural Design

All structural calculations and design work provided as part of our services are based on a visual inspection only. We cannot inspect concealed areas, hidden structural elements, or conditions behind finishes, flooring, or within walls without invasive investigation.

Structural assumptions are made based on typical construction methods for the age and type of your property. These assumptions may need to be revised once construction work commences and previously concealed areas are exposed.

Loft conversion projects carry additional structural risk as roof structures, ceiling joists, and party wall conditions are frequently concealed. It is common for structural amendments to be required once the roof structure is exposed during construction. Clients undertaking loft conversions should budget accordingly.

Scope of Structural Calculations

Structural calculations provided as part of the Pre-Build and Premium packages are prepared by a qualified third-party structural engineer engaged by Hampshire Build. Hampshire Build does not itself prepare structural calculations and accepts no liability for the structural engineer's output beyond our obligation to procure their engagement as part of the package.

Structural calculations cover steel beam sizing and foundation design only. They do not extend to any other structural elements, including but not limited to: party wall structure, roof structure beyond the immediate loft conversion scope, existing building structure, retaining walls, or any other specialist structural matter. Where additional structural calculations are required beyond this scope, these will be agreed in writing and charged at cost.

If Structural Amendments Are Required

  • When construction exposes areas not previously visible, structural amendments may be required to the original design
  • Such amendments are outside the scope of the original package fee
  • Structural reviews to address exposed conditions are charged at £150 + VAT per hour, minimum 3 hours (£450 + VAT)
  • We will provide written confirmation of any additional structural work required before proceeding
8a

Building Regulation Drawings — Standard and Scope

The building regulation drawings supplied as part of the Pre-Build and Premium packages are prepared to a standard suitable for a Building Notice application with your local Building Control body.

A Building Notice does not require a full plans check or pre-approval of drawings before construction commences. As such, our standard drawing set is not prepared to the more detailed specification required for a Full Plans application.

Full Plans Applications — Additional Scope

Where a client elects to, or is required to, submit a Full Plans application, Building Control may raise additional technical queries, requests for information, or requirements that go beyond the scope of our standard drawing set. These may include — but are not limited to — additional structural details, energy performance calculations, drainage layouts, ventilation specifications, or fire safety information.

Any additional work required to satisfy Building Control's Full Plans requirements falls outside the scope of the standard package fee. Such requirements will be confirmed in writing with the client before any additional work is commenced, and will be charged at £150 + VAT per hour, minimum 3 hours (£450 + VAT minimum per instruction).

9

Our Commitments to You

  • We will deliver the specified drawings and documents in your chosen package
  • We will respond to queries within 2 working days
  • We will correct any errors or omissions in our work at no extra cost
  • We will provide professional advice based on our experience and knowledge
  • We will keep you informed of progress throughout your project
  • Our fixed-fee packages will not increase once agreed (for the specified scope)
  • Hampshire Build reserves the right to use completed project drawings and photographs in its portfolio, marketing materials, and website unless the client requests otherwise in writing
9a

Client Obligations

To enable us to deliver your project effectively, you agree to:

  • Respond to requests for information, feedback, or approval within 10 working days
  • Provide accurate information about your property, any restrictions, and your requirements
  • Inform us immediately of any changes to your project, planning conditions, or circumstances that may affect the design
  • Ensure access to the property for the agreed survey appointment

Where a project is delayed due to client inaction for a period exceeding 3 months, Hampshire Build reserves the right to archive the project and charge a reactivation fee of £250 + VAT to recommence work.

10

Cancellation

You may cancel the contract at any time up until the first draft drawings have been issued. However, please note:

Stage of Cancellation Position
Before survey Full refund of any deposit paid
After survey, before first draft drawings You are entitled to cancel, but the deposit (£250 + VAT) is non-refundable as work has commenced. No further charges apply.
After first draft drawings issued The full package fee is due and payable. No refund is available as the core deliverables have been provided. Where additional work has been undertaken beyond the package scope, those fees also remain payable.

To cancel, please notify us in writing by email to info@hampshirebuild.co.uk.

11

Intellectual Property

Upon full payment, you receive a licence to use the drawings for the purpose of obtaining planning permission, building regulations approval, and constructing the extension at the specified property.

Copyright in the drawings remains with Hampshire Build. You may not use the drawings for any other property, sell them, or share them for commercial purposes.

Source Files and Editable Drawings (DWG / CAD Files)

Our standard packages include PDF drawings only. Source files (DWG, CAD, and other editable formats) are not included and remain the intellectual property of Hampshire Build.

Source files contain our proprietary design work, templates, and methodologies. We retain these files to protect our intellectual property and professional standards.

Release of source files: DWG/CAD source files may be released upon request for an agreed fee. This fee reflects the transfer of editable design assets and is negotiated on a project-by-project basis. Please contact us if you require source files for your project.

Even if source files are released, copyright remains with Hampshire Build unless explicitly transferred in writing.

Hampshire Build reserves the right to use completed project drawings, images, and photographs in its portfolio, marketing materials, case studies, and website. If you wish to opt out of this, please notify us in writing at info@hampshirebuild.co.uk.

12

Conservation Areas and Listed Buildings

Projects in conservation areas or involving listed buildings may require additional documentation — heritage statements, detailed design justification, and similar specialist reports. We will advise you if this applies to your property, and any additional fees will be agreed in writing before commencing this work.

13

Liability

We carry professional indemnity insurance and will exercise reasonable skill and care in providing our services.

Our liability is limited to the fee paid for the relevant service, except in cases of fraud or negligence causing personal injury.

We are not liable for any loss arising from reliance on cost estimates, planning outcomes, contractor performance, or any matters outside our direct control.

14

Complaints and Dispute Resolution

If you are unhappy with any aspect of our service, please contact us at info@hampshirebuild.co.uk. We take all complaints seriously and will respond within 5 working days.

Where a complaint cannot be resolved through our internal complaints process, both parties agree to attempt resolution through mediation before commencing any legal proceedings. The costs of mediation shall be shared equally unless otherwise agreed.

15

Website Content

All content on this website — text, images, logos, blog posts — belongs to Hampshire Build and is protected by copyright.

Website content is for general information only and does not constitute specific advice for your project. Cost examples and case studies are illustrative. Always contact us for advice tailored to your situation.

16

Privacy

We handle your personal data in accordance with UK GDPR. See our Privacy Policy for details on how we collect, use, and protect your information.

17

General

  • These terms are governed by English law
  • Any disputes will be subject to the jurisdiction of English courts
  • We may update these terms from time to time — changes apply from the date posted
  • If any part of these terms is found to be unenforceable, the rest remains in effect
18

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