House Extension
in Devizes
Compare quotes from vetted Devizes 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 Devizes?
Real prices from completed projects in Devizes 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 →Devizes 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 Devizes and South West. Always get at least 3 written quotes before committing to any builder.
House Extension Specialists Who Know Devizes
Home renovation activity in Devizes 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 Devizes 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 Devizes 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 Devizes Homeowners Say About Our House Extension Specialists
Single-storey rear extension on our 1960s detached in Devizes. New oak Crittall-style steel doors as the threshold detail - looks expensive. Total £50250 across 12 weeks on site. CCTV drain survey done before any digging started, no surprises later.
Compared four extension builders through BestBuilders for the Devizes job. Quotes ranged from £42k to £71k - went with the £58k mid-tier on detail. Permitted Development route confirmed via a Lawful Development Certificate before any digging. £93750 for the lot, hard schedule held. Already booking them for the loft conversion next.
Two years post-completion the extension still feels like part of the original house. Builder we found via BestBuilders in Devizes specced higher-grade glazing than we asked for - winter heating bills are noticeably lower. Total £77100. Working from home is so much better with the new dedicated space.
House Extension in Devizes — FAQs
Plan Your house extension Project in Devizes
Whether you're researching costs, checking planning rules, or comparing approaches before you commit, our editorial team has produced these guides to help Devizes 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
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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 Devizes
We also connect homeowners with vetted house extension specialists in towns surrounding Devizes.
Planning Your House Extension in Devizes
Before you compare quotes, it's worth understanding the full UK price picture for house extension and how Devizes 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 Devizes
Find out whether your house extension needs planning permission in Devizes, 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.