House Extension
in Ammanford
Compare quotes from vetted Ammanford extension builders for single-storey, double-storey and rear extensions. Transparent pricing from £14,500. Free, no-obligation quotes — results in 24 hours.
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How Much Do House Extension Cost in Ammanford?
Real prices from completed projects in Ammanford 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 →Ammanford pricing note: South Wales building costs run 10–15% below the national average, making it one of the most affordable regions in the UK for home improvements. Cardiff and Newport are well-served by vetted local contractors. Prices shown are indicative ranges for Ammanford and South Wales. Always get at least 3 written quotes before committing to any builder.
House Extension Specialists Who Know Ammanford
Ammanford 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 Ammanford 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 Ammanford, 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 Ammanford Homeowners Say About Our House Extension Specialists
Single-storey rear extension on our 1930s semi in Ammanford. Glazed corner of the extension brings southerly daylight deep into the plan. £124880 fully turnkey, 18 weeks. Trial pit done day one to confirm foundation depth was workable.
Compared four extension builders through BestBuilders for the Ammanford job. Quotes ranged from £42k to £71k - went with the £58k mid-tier on detail. Builder agreed staged payments against milestones - cash-flow clarity throughout. £73600 all-in over 13 weeks. EPC went up two bands thanks to the new spec.
Two years post-completion the extension still feels like part of the original house. Builder we found via BestBuilders in Ammanford pointed out a future planning issue and designed around it pre-emptively. Total £66180. Stamp duty saved by extending out rather than moving up.
House Extension in Ammanford — FAQs
Plan Your house extension Project in Ammanford
Whether you're researching costs, checking planning rules, or comparing approaches before you commit, our editorial team has produced these guides to help Ammanford 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 Ammanford
We also connect homeowners with vetted house extension specialists in towns surrounding Ammanford.
Planning Your House Extension in Ammanford
Before you compare quotes, it's worth understanding the full UK price picture for house extension and how Ammanford 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 Ammanford
Find out whether your house extension needs planning permission in Ammanford, 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.