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
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.
Pricing and VAT
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.
Cost Estimates and Calculator
- 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.
Our Service Packages
We offer fixed-fee packages with clearly defined deliverables. Our package prices are fixed for the specified scope of work.
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)
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)
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)
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 |
Payment Terms and 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 |
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.
Project Timelines
- 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.
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.
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. |
Structural Amendments During Construction
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
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.
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).
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
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.
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.
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.
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.
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.
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.
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.
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.
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
Contact
Hampshire Build