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Serving All of West Sussex

Architectural Design in West Sussex

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

With fixed-fee packages from £1,350 + VAT, we offer transparent pricing with no hidden costs. Our local expertise covers Chichester, Horsham, Crawley, Worthing, Haywards Heath and all West Sussex towns.

Why Choose Hampshire Build?

  • 98% planning approval rate across West Sussex
  • Fixed-fee packages from £1,350 + VAT
  • Deep knowledge of local council requirements
  • Complimentary feasibility consultation
  • Fast 10 working day turnaround
  • Full building regulations drawings available

Our Services Across West Sussex

House Extensions

Single and two-storey extensions

From £1,350+VAT

Loft Conversions

Bedrooms, offices and living spaces

From £1,350+VAT

Planning Permission

Expert council navigation

From £1,350+VAT

Areas We Serve in West Sussex

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

Chichester

Historic cathedral city with Roman heritage

Horsham

Market town with excellent transport links

Crawley

Near Gatwick Airport with modern infrastructure

Worthing

Coastal resort with Victorian architecture

Haywards Heath

Mid Sussex commuter town with village feel

Our Fixed-Fee Packages

Essential Package

£1,350+VAT

  • Planning Drawings
  • Measured Survey
  • Design Consultation
Most Popular

Pre-Build Package

£1,950+VAT

  • Everything in Essential
  • 3D Visuals
  • Planning Submission

Premium Package

£2,950+VAT

  • Everything in Pre-Build
  • Building Regulations
  • Structural Calculations

Ready to Transform Your West Sussex Property?

Get your free planning feasibility check 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
Hertfordshire New!
Berkshire
Buckinghamshire New!
Oxfordshire
Wiltshire
View all service areas