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Serving All of Hampshire

House Extensions Hampshire

Hampshire Build is an architectural design practice proudly serving Hampshire. Based in St Albans, we specialise in house extensions, loft conversions, and planning permission.

With fixed-fee packages from £1,950 + VAT, we offer transparent pricing with no hidden costs. Our local expertise covers Winchester, Southampton, Basingstoke, Andover and all Hampshire towns.

Why Choose Hampshire Build?

  • Fixed-fee packages from £1,950 + VAT
  • Consistent planning process with a strong application record
  • Complimentary feasibility consultation
  • Your survey and drawing schedule will be agreed with you after instruction.
  • Building regulation drawings prepared for Building Notice submission; required structural calculations by an independent qualified structural engineer

Our Services Across Hampshire

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 Hampshire

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

Winchester

Historic county town with cathedral heritage

Southampton

Major city with diverse property types

Basingstoke

Modern town with excellent transport links

Andover

Market town with growing development

Fareham

Coastal town with character properties

Romsey

Historic market town with conservation areas

Eastleigh

Well-connected commuter town

Farnborough

Aviation heritage with modern development

Our Fixed-Fee Packages

Pre-Build Package

£1,950+VAT

  • Planning Drawings
  • Building regulation drawings prepared for Building Notice submission
  • Structural calculations by an independent qualified structural engineer
Most Popular

Premium Package

£2,950+VAT

  • Defined design and documentation scope
  • Contractor Vetting & Proposals
  • Client-Focused Building Contract
  • Contractor vetting and a client-focused building contract.

Premium Plus Package

£3,950+VAT

  • Expanded pre-construction scope
  • Staged programme of works mapped to contractor stage payments
  • Building Notice submission and one Party Wall notice

Ready to Transform Your Hampshire Property?

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

House Extensions Hampshire — Frequently Asked Questions

Recent projects across Hampshire

Completed design packages

Delivered design packages include a Basingstoke project combining a loft conversion and single-storey extension, and extension designs in Winchester, Andover, Whitchurch, Romsey and Southampton. A garage-conversion design package was completed in the Basingstoke area (RG23).

In-progress extension designs

Current extension design work includes Fleet, Fareham, Eastleigh, Chandlers Ford, Waterlooville, Fordingbridge and Tadley.

Local planning context

Hampshire planning decisions are handled by different authorities depending on the property address; Winchester City Council covers Winchester, while Test Valley Borough Council covers Andover. Winchester's historic centre and conservation areas can require additional permissions, and Test Valley properties in conservation areas also need address-specific consideration.

Completed refers to delivery of the design package, not construction or an individual planning decision.

Explore Our Other Service Areas

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

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

Public council planning decisions

Recent planning decisions in Hampshire

Updated 10 October 2026

In the 12 months to 10 October 2026, The local planning authorities decided 270 householder home-improvement applications near Winchester, Basingstoke, Eastleigh, Fleet, Petersfield in Hampshire in the cached public records — 256 approved.

Coverage: Sampled 2 km town-centre catchments: Winchester, Basingstoke, Eastleigh, Fleet, Petersfield; not a county-wide total. Extensions, loft conversions, dormers, garage conversions and porches only. Records without clear householder classification, location or final decision are excluded. Proposal summaries describe the home-improvement element; see the council record for the full proposal. This is not a complete council-register census.

These are public council decisions about other people’s applications. They are not Hampshire Build projects and do not predict the outcome of your project.