House Extension
in Fareham
Compare quotes from vetted Fareham extension builders for single-storey, double-storey and rear extensions. Transparent pricing from £17,500. Free, no-obligation quotes — results in 24 hours.
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How Much Do House Extension Cost in Fareham?
Real prices from completed projects in Fareham and the surrounding area. Costs vary by size, specification and access — use these as a starting guide, then get 3 free quotes for your specific project.
The most popular choice for UK terraces and semis. Adds a kitchen-diner or extra living space at ground level. Typically 3–5m deep, completed in 10–14 weeks.
Get quotes for this →Maximum space gain in a single build — adds a ground-floor room and a bedroom above. Strong ROI in most UK property markets. Requires full planning permission.
Get quotes for this →Ideal for terraced homes with a narrow side alley. Transforms a cramped kitchen into a full-width open-plan space. Often combined with a rear extension.
Get quotes for this →Costs depend on size, spec and access. The best way to know your exact price is to compare 3 quotes from vetted local specialists.
Get free quotes →Fareham pricing note: Southern England (Hampshire, Dorset, West Sussex) sits around 10–15% above the national average. Coastal locations and areas with restricted site access can attract additional charges from contractors. Prices shown are indicative ranges for Fareham and Southern. Always get at least 3 written quotes before committing to any builder.
House Extension Specialists Who Know Fareham
Home renovation activity in Fareham continues to grow year on year. The area's varied housing stock, from older stone-built properties to new-build estates, means there is always strong demand for skilled, experienced local builders.
Before any builder appears on our Fareham platform, we carry out a full vetting check covering public liability insurance, trade qualifications, company registration and verified customer feedback. Only builders who pass every stage are listed.
Our Fareham builder network covers extensions, loft conversions, kitchens, bathrooms, roofing, driveways and more. Get up to 3 free, no-obligation quotes within 24 hours and choose the builder that best fits your project and budget.
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What Fareham Homeowners Say About Our House Extension Specialists
Hip-end side extension on our mid-terrace in Fareham. 40m² open-plan family room with sliding doors out to the garden. Final figure £101400 fully fitted out. Party wall agreement handled by their consultant - smooth process.
Compared four extension builders through BestBuilders for the Fareham job. Picked the firm whose CAD drawings showed every junction in 3D before signing. CDM regs followed properly - principal designer and contractor roles defined in writing. Came to £77350 fitted plus the £690 party wall fee. Daily 5pm site walk with the foreman, weekly progress on the spreadsheet.
A summer and a winter on, the new space holds temperature without the boiler kicking in. Builder we found via BestBuilders in Fareham integrated MVHR ducting into the new ceiling void - no soffit boxes needed. Total £85500. Insurance happy with the building control completion certificate.
House Extension in Fareham — FAQs
Plan Your house extension Project in Fareham
Whether you're researching costs, checking planning rules, or comparing approaches before you commit, our editorial team has produced these guides to help Fareham homeowners make informed decisions about their house extension project.
House Extension Cost Guide
Detailed UK price ranges, regional adjustments and worked examples for house extension projects.
Read House Extension Cost Guide →All House Extension Specialists
Browse our nationwide network of vetted house extension contractors covering all 519 UK towns.
Browse House Extension Specialists →All Cost Guides
Compare prices across extensions, lofts, kitchens, bathrooms, roofing, driveways and solar projects.
View All Cost Guides →Planning your house extension project? Read these guides:
House Extension Near Fareham
We also connect homeowners with vetted house extension specialists in towns surrounding Fareham.
Planning Your House Extension in Fareham
Before you compare quotes, it's worth understanding the full UK price picture for house extension and how Fareham sits within it. The guides below cover average costs, what affects your quote, and how to choose a builder you can trust.
UK House Extension Cost Guide
Full price ranges, worked examples and the factors that move your quote — drawn from real project data across 519 UK towns.
Read the house extension cost guide →House Extension Across the UK
Browse house extension services nationwide, see what's typical in your region, and request quotes from any UK location.
Visit the UK house extension hub →Planning Permission for House Extension in Fareham
Find out whether your house extension needs planning permission in Fareham, what Permitted Development limits apply, and how rules differ in conservation areas, Article 4 zones, and listed-building settings.
Read the house extension planning rules →More homeowner resources: all UK building guides, cost guides, planning permission, comparisons, how-to guides and industry insights.