Wales regional pricing

How Much Does a Builder Cost in Rhondda Cynon Taff?

Updated prices for . Rhondda Cynon Taff prices are typically 10% below the national average.

14 services priced
Wales region
Updated

Price summary

Rhondda Cynon Taff Price Summary

Service Low Average High
Single Storey Extension £27,090 £45,150 £72,240
Double Storey Extension £45,150 £76,755 £126,420
Loft Conversion £22,575 £40,635 £67,725

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

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Full pricing

All Builder Prices in Rhondda Cynon Taff

Every price adjusted for Rhondda Cynon Taff using a 0.903x cost multiplier, rounded to the nearest £5.

Single Storey Extension

Low

£27,090

Average

£45,150

High

£72,240

8-12 weeks

Double Storey Extension

Low

£45,150

Average

£76,755

High

£126,420

12-20 weeks

Loft Conversion

Low

£22,575

Average

£40,635

High

£67,725

6-10 weeks

Garage Conversion

Low

£7,225

Average

£13,545

High

£22,575

2-4 weeks

Porch Build

Low

£2,260

Average

£4,065

High

£7,225

1-2 weeks

Garden Wall

Low

£720

Average

£1,355

High

£2,710

2-4 days

Knock Through Internal Wall

Low

£905

Average

£1,625

High

£3,160

2-4 days

Chimney Breast Removal

Low

£1,085

Average

£1,805

High

£3,160

2-4 days

Underpinning

Low

£4,515

Average

£10,835

High

£22,575

2-4 weeks

Damp Proof Course

Low

£450

Average

£1,085

High

£2,260

1-3 days

New Build Garage

Low

£9,030

Average

£16,255

High

£27,090

3-5 weeks

Outbuilding or Garden Room

Low

£10,835

Average

£22,575

High

£45,150

3-6 weeks

Structural Steelwork (RSJ Installation)

Low

£905

Average

£1,625

High

£2,710

1-2 days

Patio or Decking Build

Low

£1,355

Average

£3,160

High

£6,320

3-5 days

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Regional comparison

How Rhondda Cynon Taff Compares

Average cost of single storey extension across regions.

Rhondda Cynon Taff
-10% £45,150
National Average
baseline £50,000
London
+24% £62,150

Local insights

What Affects Builder Costs in Rhondda Cynon Taff?

Wales has a distinctive mix of housing, from Victorian and Edwardian terraces in the south to stone-built cottages and rural properties across the rest of the country. Rhondda Cynon Taff and the wider area around Swansea and the Valleys include many older properties that present challenges for builder work. Stone walls, exposed locations, and older infrastructure all tend to push costs toward the higher end.

Wales sits below the national average for trade costs. Labour rates in Rhondda Cynon Taff are typically 10% below the UK average. While this makes builder work more affordable, there can be fewer qualified professionals in rural areas compared to English cities, which can mean longer waiting times. In more populated areas, competition keeps prices reasonable. Always get at least three quotes.

Properties in Rhondda Cynon Taff can present specific challenges that affect builder costs. Stone-built and older Welsh terraces often have thick walls that make work more difficult and expensive. Properties in exposed or rural locations may face harsher weather conditions that influence timing and approach. For larger jobs in Rhondda Cynon Taff, expect to pay £45,150 to £126,420 for double storey extension.

When getting quotes in Rhondda Cynon Taff, 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 complications, and provide a detailed 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 Rhondda Cynon Taff

Explore costs for other services in the Rhondda Cynon Taff area.

40 services — scroll to explore

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Common questions

Frequently Asked Questions

Common questions about builder costs in Rhondda Cynon Taff.

How much does a builder cost in Rhondda Cynon Taff in 2026?
Single Storey Extension in Rhondda Cynon Taff typically costs between £27,090 and £72,240, with the average being around £45,150. Prices vary depending on the scope of work, materials used, and the specific requirements of your property.
Are builder prices cheaper in Rhondda Cynon Taff than London?
Yes. Rhondda Cynon Taff builder costs are typically 10% below the national average, while London prices run around 24% above it. For single storey extension, you could save over £17,000 compared to the same job in London.
How do I find a good builder in Rhondda Cynon Taff?
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 Rhondda Cynon Taff?
The main factors are the scope and complexity of what you need, the options and products chosen, and local market rates. Rhondda Cynon Taff rates are 10% below the national average. Getting multiple quotes is the best way to ensure a fair price.
Do builder prices include materials in Rhondda Cynon Taff?
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.