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Serving All of Hertfordshire

Architectural Design in Hertfordshire

Hampshire Build is an award-winning architectural design practice proudly serving Hertfordshire. Based in St Albans, we specialize in house extensions, loft conversions, and planning permission with a 98% approval rate.

With fixed-fee packages from £1,950 + VAT, we offer transparent pricing with no hidden costs. Our local expertise covers St Albans, Watford, Stevenage, Hemel Hempstead and all Hertfordshire towns.

Why Choose Hampshire Build?

  • 98% planning approval rate across Hertfordshire
  • Fixed-fee packages from £1,950 + VAT
  • Consistent planning process with a strong application record
  • Complimentary feasibility consultation
  • Fast 10 working day turnaround
  • Full building regulations drawings available

Our Services Across Hertfordshire

House Extensions

Single and two-storey extensions

From £1,950+VAT

Loft Conversions

Bedrooms, offices and living spaces

From £1,950+VAT

Planning Permission

Expert council navigation

From £1,950+VAT

Areas We Serve in Hertfordshire

Click on your town to learn about local planning requirements and how we can help with your project.

St Albans

Historic cathedral city with 28 conservation areas

Stevenage

New Town heritage with unique design opportunities

Watford

Excellent London links, high property values

Hemel Hempstead

Clear permitted development guidelines

Welwyn Garden City

Garden City architectural heritage

Hitchin

Medieval character, sensitive design approach

Bishop's Stortford

Hertfordshire-Essex border expertise

Berkhamsted

Conservation area and listed building specialists

Harpenden

Premium residential area, village character

Hertford

County town with rich architectural heritage

Our Fixed-Fee Packages

Pre-Build Package

£1,950+VAT

  • Planning Drawings
  • Building Regulation Drawings
  • Structural Calculations
Most Popular

Premium Package

£2,950+VAT

  • Everything in Pre-Build Package
  • Contractor Vetting & Proposals
  • Client-Focused Building Contract

Premium Plus Package

£4,950+VAT

  • Everything in Premium Package
  • 2 On-Site Superstructure Visits
  • Unlimited Structural Revisions

Ready to Transform Your Hertfordshire Property?

Book a complimentary consultation today – no obligation, no hidden fees.

Explore Our Other Service Areas

Hampshire Build provides extension design services across 8 counties in South England. Explore our other locations:

Hampshire
Surrey
Berkshire
Buckinghamshire New!
Oxfordshire
Wiltshire
West Sussex
View all service areas