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Serving Horsham & Surrounding Areas

Architectural Design in Horsham

Hampshire Build is an architectural design practice proudly serving Horsham and the surrounding West Sussex area. We specialize in house extensions, loft conversions, and garage conversions.

With over 20 years experience and working knowledge of Horsham District Council requirements, we understand the unique character of this historic market town with excellent transport links to London and Gatwick.

20+ years’ experience

Why Horsham Homeowners Choose Us

  • Fixed-fee packages from £1,950 + VAT
  • Expert knowledge of conservation areas
  • Complimentary feasibility consultation
  • Survey and drawing schedule agreed after instruction
  • Market town planning expertise

Our Services in Horsham

Loft Conversions in Horsham

Transform your unused loft into a valuable bedroom, office, or living area. Perfect for Horsham's Victorian and Edwardian properties.

From £1,950 + VAT

House Extensions in Horsham

Single-storey, two-storey, or wrap-around extensions designed to maximize your Horsham property's potential.

From £1,950 + VAT

Planning Permission in Horsham

Expert navigation of Horsham District Council planning requirements.

From £1,950 + VAT

Working with Horsham District Council

Horsham has conservation areas protecting its historic character. Many properties in the town centre and surrounding villages require careful design consideration. We're experienced with Horsham's planning landscape.

  • Planning portal: horsham.gov.uk/planning
  • Councils aim to decide householder applications within 8 weeks of validation. Timing is set by the council and is not guaranteed.
  • Conservation areas including The Causeway, Carfax

Why Extend in Horsham?

With excellent schools, fast trains to London Victoria, and the charming town centre, more Horsham homeowners choose to extend rather than relocate.

Frequently Asked Questions - Horsham

Building costs depend on the surveyed property and agreed scope. Use our free Feasibility Check for an indicative budget, then obtain written contractor quotations. Our design packages start from £1,950 + VAT; building work and statutory fees are separate.

Many extensions fall under Permitted Development Rights. However, Horsham has conservation areas including the historic town centre and The Causeway. Explore your project with our Free Feasibility Study.

Standard planning applications with Horsham District Council typically take 8-12 weeks.

Rear extensions and loft conversions work exceptionally well for Horsham properties. We design sympathetic extensions that complement the original architecture and meet local planning requirements.

Yes, we have a network of trusted builders across West Sussex. We can recommend reliable contractors for your Horsham project.

Ready to Transform Your Horsham Property?

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

Nearby Areas We Serve

Public council planning decisions

Recent planning decisions near Horsham

Updated 10 October 2026

In the 12 months to 10 October 2026, Horsham planning authority decided 66 householder home-improvement applications near Horsham in the cached public records — 64 approved.

Coverage: Within approximately 2 km of the town centre. 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.