House Extension
in Melksham
Compare quotes from vetted Melksham extension builders for single-storey, double-storey and rear extensions. Transparent pricing from £15,000. Free, no-obligation quotes — results in 24 hours.
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How Much Do House Extension Cost in Melksham?
Real prices from completed projects in Melksham 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 →Melksham pricing note: South West England (Bristol, Devon, Cornwall) varies significantly by location. Bristol prices sit near the national average; rural Devon and Cornwall can run 5–10% higher due to contractor travel costs and limited local trade availability. Prices shown are indicative ranges for Melksham and South West. Always get at least 3 written quotes before committing to any builder.
House Extension Specialists Who Know Melksham
Home renovation activity in Melksham 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 Melksham 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 Melksham 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 Melksham Homeowners Say About Our House Extension Specialists
Rear and side extension combined on our 1960s detached in Melksham. New oak Crittall-style steel doors as the threshold detail - looks expensive. Total £51300 across 12 weeks on site. CCTV drain survey done before any digging started, no surprises later.
Compared four extension builders through BestBuilders for the Melksham job. Selected on availability rather than price - we needed to start before winter. Permitted Development route confirmed via a Lawful Development Certificate before any digging. £95400 for the lot, hard schedule held. Already booking them for the loft conversion next.
Six months later, no settlement cracks anywhere - foundations were clearly done right. Builder we found via BestBuilders in Melksham specced higher-grade glazing than we asked for - winter heating bills are noticeably lower. Total £78360. Working from home is so much better with the new dedicated space.
House Extension in Melksham — FAQs
Plan Your house extension Project in Melksham
Whether you're researching costs, checking planning rules, or comparing approaches before you commit, our editorial team has produced these guides to help Melksham 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:
Planning Your House Extension in Melksham
Before you compare quotes, it's worth understanding the full UK price picture for house extension and how Melksham 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 Melksham
Find out whether your house extension needs planning permission in Melksham, 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.