House Extension
in Dumfries
Compare quotes from vetted Dumfries 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 Dumfries?
Real prices from completed projects in Dumfries 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 local specialists.
Get free quotes →Dumfries pricing note: South Scotland (Glasgow, Edinburgh area) prices are broadly in line with or slightly below the English national average. Edinburgh's tight city centre can attract access surcharges; suburban projects are competitively priced. Prices shown are indicative ranges for Dumfries and South Scotland. Always get at least 3 written quotes before committing to any builder.
House Extension Specialists Who Know Dumfries
Tell us about your house extension project once and up to three local specialists who cover Dumfries get in touch with quotes — free, with no obligation, and you choose who to hire.
Most firms quoting in Dumfries also travel to nearby Stranraer, Kilmarnock and Falkirk. That matters because it widens the pool of South Scotland contractors competing for your job, which usually sharpens the price.
It helps to know the regional picture before you budget: South Scotland (Glasgow, Edinburgh area) prices are broadly in line with or slightly below the English national average. Edinburgh's tight city centre can attract access surcharges; suburban projects are competitively priced. Three like-for-like quotes will show where your Dumfries project lands.
Local facts: Dumfries
- Local planning authority: Dumfries and Galloway Council
- Region: Scotland
- Town-centre postcode district: DG1
- Average house price (Dumfries and Galloway local authority, June 2026): £166,891 (+2.7% year on year) — detached £256,233, semi-detached £167,255, terraced £134,387, flats £86,717
Planning-authority, region and postcode data: ONS Postcode Directory (Open Government Licence). House prices: HM Land Registry UK House Price Index for the local authority (OGL). Member coverage is each member's own registered base and travel radius.
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House Extension in Dumfries — FAQs
Plan Your house extension Project in Dumfries
Whether you're researching costs, checking planning rules, or comparing approaches before you commit, our editorial team has produced these guides to help Dumfries 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
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View All Cost Guides →Planning your house extension project? Read these guides:
Planning Your House Extension in Dumfries
Before you compare quotes, it's worth understanding the full UK price picture for house extension and how Dumfries 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 Dumfries
Find out whether your house extension needs planning permission in Dumfries, 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.