Cardiff · Building & conversions

Builders in Cardiff

Phone numbers for builders covering Cardiff — extensions, loft conversions and refurbishment. Open a profile and call the business yourself. This site does not send your job.

Extensions and loft work need more than a day rate. The renovation budget tool can sit beside a local quote. In Cardiff, terrace stock and South Wales postcodes often sit beside a city heading. Profiles show a name, the area they cover and a phone number. Public qualifications such as Gas Safe or NICEIC appear only when they are on the profile. Read the cost notes for a sourced national range; a figure on a card is not a quote.

Businesses on this list

10 businesses on this list.

FORTY BUILDERS LTD

Building & conversions · Cardiff

12 Celyn Grove, Cyncoed, Cardiff, United Kingdom CF23 6SH

Building, extensions and refurbishment

Quote on request.

Open profile

NEST BUILDERS LTD

Building & conversions · Cardiff

49 Fishguard Road Llanishen, Cardiff, Wales CF14 5PQ

Building, extensions and refurbishment

Quote on request.

Open profile

RSM BUILDERS LIMITED

Building & conversions · Cardiff

2 Brynheulog, Pentwyn, Cardiff, United Kingdom CF23 7JA

Building, extensions and refurbishment

Quote on request.

Open profile

Typical building & conversions costs

Extension and loft figures move with structure, access and finishes more than with a national average. Use the renovation budget tool to split labour, materials and contingency, then ask for a written package from a local firm.

A local rule to check in Cardiff

Many extensions, loft conversions and structural openings need building control, and some need planning. A listing is not an approval and not a party-wall agreement. Terrace streets and South Wales spillover appear often; ask which postcodes they will actually visit.

Questions before you phone

How do I find builders in Cardiff on this list?

This page is the Cardiff building & conversions list. Names, service areas and contact details sit on the cards. Open a profile and contact the firm yourself. Change the city or trade at the top to open a different list.

Does this page send my job to builders in Cardiff?

No. The names and contact details are printed here so you can make contact yourself. This site does not email or text anyone on your behalf.

What should I check before I phone a Cardiff building & conversions firm?

Many extensions, loft conversions and structural openings need building control, and some need planning. A listing is not an approval and not a party-wall agreement. In Cardiff, terrace stock and South Wales postcodes often sit beside a city heading.

Other Cardiff and building & conversions lists

All builders

Building & conversions lists in every city we cover.

All trades in Cardiff

Other home-service trades covering Cardiff.

Builders in Birmingham

In Birmingham, many of these firms also cover nearby Black Country and Warwickshire postcodes.

Builders in Bristol

In Bristol, hills, Georgian streets and neighbouring Somerset or South Gloucestershire postcodes often appear in the address.

Builders in Edinburgh

In Edinburgh, listed tenements and conservation streets often sit beside the labour figure.

Builders in Glasgow

In Glasgow, tenement closes and sandstone blocks often decide access before the trade itself.

Cleaners in Cardiff

End-of-tenancy and property-maintenance cleans with a published phone number.

Electricians in Cardiff

EICR, consumer units and rewires. NICEIC or NAPIT appears only when it is on the profile.

Gardeners in Cardiff

Gardens, paving and external maintenance rather than a general handyman listing.

How to ask for a quote · Cost notes · Grants · Blog · All listings