House Extension
in Fleet
Compare quotes from vetted Fleet extension builders for single-storey, double-storey and rear extensions. Transparent pricing from £17,500. Free, no-obligation quotes — results in 24 hours.
- Vetted, insured house extension specialists in Fleet
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How Much Do House Extension Cost in Fleet?
Real prices from completed projects in Fleet 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 →Fleet 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 Fleet and Southern. Always get at least 3 written quotes before committing to any builder.
House Extension Specialists Who Know Fleet
Fleet is one of the UK's most active home renovation markets. With a diverse range of properties across the area, from period homes to modern new builds, local builders need to be versatile, skilled, and reliable.
BestBuilders vets every builder in our Fleet network. We check for public liability insurance, relevant trade qualifications (CIOB, FMB, Gas Safe, NICEIC), and a minimum of five verified customer reviews before any builder can appear on our platform.
Whether you are planning a rear extension, a loft conversion, or a full kitchen renovation in Fleet, we will connect you with the right specialist within 24 hours. All quotes are free and there is no obligation to proceed.
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What Fleet Homeowners Say About Our House Extension Specialists
Hip-end side extension on our detached new-build in Fleet. New floor finished with engineered oak running through to the original house. Final figure £107640 fully fitted out. CIAT-registered architect on retainer for the planning drawings.
Compared four extension builders through BestBuilders for the Fleet job. Picked the firm whose CAD drawings showed every junction in 3D before signing. WhatsApp group with all the trades, photos shared daily, choices approved on the fly. Came to £88860 all-in, including bi-folds and lantern. Building control sign-off straightforward, no comeback.
A summer and a winter on, the new space holds temperature without the boiler kicking in. Builder we found via BestBuilders in Fleet oversized the steel beam slightly so we could remove a future internal wall easily. Total £57360. EPC went up two bands - the new envelope spec made a real difference.
House Extension in Fleet — FAQs
Plan Your house extension Project in Fleet
Whether you're researching costs, checking planning rules, or comparing approaches before you commit, our editorial team has produced these guides to help Fleet 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 Fleet
We also connect homeowners with vetted house extension specialists in towns surrounding Fleet.
Planning Your House Extension in Fleet
Before you compare quotes, it's worth understanding the full UK price picture for house extension and how Fleet 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 Fleet
Find out whether your house extension needs planning permission in Fleet, 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.