Scotland regional pricing

How Much Does a Builder Cost in West Lothian?

Updated prices for . West Lothian prices are typically 5% above the national average.

14 services priced
Scotland region
Updated

Price summary

West Lothian Price Summary

Service Low Average High
Single Storey Extension £31,470 £52,450 £83,920
Double Storey Extension £52,450 £89,165 £146,860
Loft Conversion £26,225 £47,205 £78,675

Prices include labour and materials. VAT may apply. Based on Scotland regional pricing.

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Full pricing

All Builder Prices in West Lothian

Every price adjusted for West Lothian using a 1.049x cost multiplier, rounded to the nearest £5.

Single Storey Extension

Low

£31,470

Average

£52,450

High

£83,920

8-12 weeks

Double Storey Extension

Low

£52,450

Average

£89,165

High

£146,860

12-20 weeks

Loft Conversion

Low

£26,225

Average

£47,205

High

£78,675

6-10 weeks

Garage Conversion

Low

£8,390

Average

£15,735

High

£26,225

2-4 weeks

Porch Build

Low

£2,625

Average

£4,720

High

£8,390

1-2 weeks

Garden Wall

Low

£840

Average

£1,575

High

£3,145

2-4 days

Knock Through Internal Wall

Low

£1,050

Average

£1,890

High

£3,670

2-4 days

Chimney Breast Removal

Low

£1,260

Average

£2,100

High

£3,670

2-4 days

Underpinning

Low

£5,245

Average

£12,590

High

£26,225

2-4 weeks

Damp Proof Course

Low

£525

Average

£1,260

High

£2,625

1-3 days

New Build Garage

Low

£10,490

Average

£18,880

High

£31,470

3-5 weeks

Outbuilding or Garden Room

Low

£12,590

Average

£26,225

High

£52,450

3-6 weeks

Structural Steelwork (RSJ Installation)

Low

£1,050

Average

£1,890

High

£3,145

1-2 days

Patio or Decking Build

Low

£1,575

Average

£3,670

High

£7,345

3-5 days

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Regional comparison

How West Lothian Compares

Average cost of single storey extension across regions.

West Lothian
+5% £52,450
National Average
baseline £50,000
London
+24% £62,150

Local insights

What Affects Builder Costs in West Lothian?

Scotland's housing stock includes distinctive tenement flats, Victorian and Georgian terraces, post-war council builds and modern developments. West Lothian and surrounding areas have many properties with older infrastructure, particularly in tenement buildings. These older properties often present challenges for builder work that push costs toward the higher end of the ranges shown above.

Scotland sits below the national average for most trade costs. Labour rates in West Lothian are around 5% above the UK average. There's a reasonable supply of qualified builder professionals across Scotland's central belt, though more remote areas may have fewer options and longer wait times. Prices still vary by 30-50% between different tradespeople, making multiple quotes essential.

Properties in West Lothian present some specific challenges for builder work. Scottish tenement flats often have communal arrangements that complicate access. Older stone-built properties have thick walls that make certain work more difficult. The Scottish climate can also affect timing and approach. For larger projects in West Lothian, expect to pay £52,450 to £146,860 for double storey extension.

When getting quotes in West Lothian, aim for at least three from different qualified professionals. Ask each one to visit and assess the work rather than quoting over the phone. A good builder will check existing conditions, identify potential complications, and provide a clear cost breakdown. Be wary of quotes that seem significantly cheaper — they may be cutting corners on materials or quality. Always check qualifications, insurance and recent reviews.

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More services

Other Services in West Lothian

Explore costs for other services in the West Lothian area.

40 services — scroll to explore

Common questions

Frequently Asked Questions

Common questions about builder costs in West Lothian.

How much does a builder cost in West Lothian in 2026?
Single Storey Extension in West Lothian typically costs between £31,470 and £83,920, with the average being around £52,450. Prices vary depending on the scope of work, materials used, and the specific requirements of your property.
Are builder prices cheaper in West Lothian than London?
West Lothian prices are 5% above the national average, though still £9,700 cheaper than London for single storey extension.
How do I find a good builder in West Lothian?
Get at least three quotes from different tradespeople, check recent reviews, and ask whether the quote includes VAT and everything you need. A detailed written quote that breaks down all costs is a good sign. Always check qualifications, insurance and recent reviews before hiring.
What affects builder prices in West Lothian?
The main factors are the scope and complexity of what you need, the options and products chosen, and local market rates. West Lothian rates are 5% above the national average. Getting multiple quotes is the best way to ensure a fair price.
Do builder prices include materials in West Lothian?
The prices shown on this page include all typical costs. However, when getting real quotes, always confirm what is and isn't included. Some tradespeople break out costs separately, while others give an all-in price. Ask for a detailed breakdown before agreeing to any work.