House Extension
in Widnes
Compare quotes from vetted Widnes 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 Widnes?
Real prices from completed projects in Widnes 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 →Widnes pricing note: Merseyside and North Wales prices are broadly competitive, sitting 5–10% below the national average. Liverpool projects may attract minor access surcharges; rural North Wales locations can add logistics costs for specialist trades. Prices shown are indicative ranges for Widnes and Merseyside & North Wales. Always get at least 3 written quotes before committing to any builder.
House Extension Specialists Who Know Widnes
Widnes has a thriving home improvement market driven by a strong local economy and a mix of Victorian terraces, post-war housing and contemporary developments. Finding the right builder is key to any successful project.
Every builder in our Widnes network is thoroughly vetted before joining BestBuilders. We verify insurance cover, check trade memberships with bodies such as the FMB and CIOB, and require a minimum of five real customer reviews.
From a small bathroom refurbishment to a major double-storey extension, our vetted Widnes builders cover the full range of residential projects. Request your free quotes today and compare options before making any decisions.
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What Widnes Homeowners Say About Our House Extension Specialists
Steel-framed wraparound on our 1960s detached in Widnes. Cantilevered glass roof at the threshold with no internal columns - clean look. Final invoice £81390 over 17 weeks. Full insurance-backed warranty in writing on the structural works.
Compared four extension builders through BestBuilders for the Widnes job. Chose the design-and-build option for single-point accountability. CDM regs followed properly - principal designer and contractor roles defined in writing. Came to £84870 across 16 weeks. Insurance happy with the structural certificate.
Two summers in, the threshold detail still drains perfectly with no puddling. Builder we found via BestBuilders in Widnes integrated MVHR ducting into the new ceiling void - no soffit boxes needed. Total £62820. Family logistics transformed - everyone has space to themselves.
House Extension in Widnes — FAQs
Plan Your house extension Project in Widnes
Whether you're researching costs, checking planning rules, or comparing approaches before you commit, our editorial team has produced these guides to help Widnes 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 Widnes
We also connect homeowners with vetted house extension specialists in towns surrounding Widnes.
Planning Your House Extension in Widnes
Before you compare quotes, it's worth understanding the full UK price picture for house extension and how Widnes 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 Widnes
Find out whether your house extension needs planning permission in Widnes, 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.