London regional pricing

How Much Does a Builder Cost in Richmond upon Thames?

Updated prices for . Richmond upon Thames prices are typically 48% above the national average.

14 services priced
London region
Updated

Price summary

Richmond upon Thames Price Summary

Service Low Average High
Single Storey Extension £44,460 £74,100 £118,560
Double Storey Extension £74,100 £125,970 £207,480
Loft Conversion £37,050 £66,690 £111,150

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

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Full pricing

All Builder Prices in Richmond upon Thames

Every price adjusted for Richmond upon Thames using a 1.482x cost multiplier, rounded to the nearest £5.

Single Storey Extension

Low

£44,460

Average

£74,100

High

£118,560

8-12 weeks

Double Storey Extension

Low

£74,100

Average

£125,970

High

£207,480

12-20 weeks

Loft Conversion

Low

£37,050

Average

£66,690

High

£111,150

6-10 weeks

Garage Conversion

Low

£11,855

Average

£22,230

High

£37,050

2-4 weeks

Porch Build

Low

£3,705

Average

£6,670

High

£11,855

1-2 weeks

Garden Wall

Low

£1,185

Average

£2,225

High

£4,445

2-4 days

Knock Through Internal Wall

Low

£1,480

Average

£2,670

High

£5,185

2-4 days

Chimney Breast Removal

Low

£1,780

Average

£2,965

High

£5,185

2-4 days

Underpinning

Low

£7,410

Average

£17,785

High

£37,050

2-4 weeks

Damp Proof Course

Low

£740

Average

£1,780

High

£3,705

1-3 days

New Build Garage

Low

£14,820

Average

£26,675

High

£44,460

3-5 weeks

Outbuilding or Garden Room

Low

£17,785

Average

£37,050

High

£74,100

3-6 weeks

Structural Steelwork (RSJ Installation)

Low

£1,480

Average

£2,670

High

£4,445

1-2 days

Patio or Decking Build

Low

£2,225

Average

£5,185

High

£10,375

3-5 days

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Regional comparison

How Richmond upon Thames Compares

Average cost of single storey extension across regions.

Richmond upon Thames
+48% £74,100
National Average
baseline £50,000
London
+24% £62,150

Local insights

What Affects Builder Costs in Richmond upon Thames?

Richmond upon Thames's housing stock ranges from Georgian and Victorian terraces to post-war estates and modern new-builds. Properties across areas like Islington, Hackney and Brixton vary enormously in age, layout and condition, all of which directly affect builder costs. Older properties tend to need more preparation work and present access challenges that push prices toward the higher end of the ranges shown above.

London is the most expensive part of the UK for trade work, with labour rates running around 24% above the national average. This reflects the high cost of living, congestion charges, and expensive parking that tradespeople factor into their quotes. Despite the higher prices, there is no shortage of qualified builder professionals across the capital. Prices still vary by 30-50% between tradespeople for the same job, making multiple quotes essential.

Several factors affect what you will pay for builder work in Richmond upon Thames. The scope and complexity of the job is the biggest driver — straightforward work in accessible locations will be at the lower end, while anything involving older properties, difficult access, or structural complications will cost more. Material choices also make a significant difference; opting for premium brands or higher-spec products can add 20-40% to the total. For larger jobs, a builder in Richmond upon Thames might quote £74,100 to £207,480 for double storey extension.

When getting quotes in Richmond upon Thames, aim for at least three from different qualified professionals. Ask each one to visit and assess the work in person rather than quoting over the phone. A good builder will check the existing setup, identify any potential complications, and give you a detailed breakdown of costs. Be wary of quotes that seem significantly cheaper than others — they may be cutting corners on materials or not including everything in the price. Always check qualifications, insurance and recent reviews before hiring.

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More services

Other Services in Richmond upon Thames

Explore costs for other services in the Richmond upon Thames area.

40 services — scroll to explore

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Common questions

Frequently Asked Questions

Common questions about builder costs in Richmond upon Thames.

How much does a builder cost in Richmond upon Thames in 2026?
Single Storey Extension in Richmond upon Thames typically costs between £44,460 and £118,560, with the average being around £74,100. Prices vary depending on the scope of work, materials used, and the specific requirements of your property.
Are builder prices cheaper in Richmond upon Thames than London?
Richmond upon Thames prices are 48% above the national average, though still comparable to London for single storey extension.
How do I find a good builder in Richmond upon Thames?
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 Richmond upon Thames?
The main factors are the scope and complexity of what you need, the options and products chosen, and local market rates. Richmond upon Thames rates are 48% above the national average. Getting multiple quotes is the best way to ensure a fair price.
Do builder prices include materials in Richmond upon Thames?
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.