Swansea · Building & conversions

Builders in Swansea

Phone numbers for builders covering Swansea — 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. Gorseinon appears on Swansea cards. Cardiff is the other list. The Welsh notification route for electrical work applies; do not describe it with the English form name alone. 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

4 businesses on this list.

Typical building & conversions costs

Checkatrade’s house-extension guide, per-square-metre table last updated March 2025, is a national sense-check for shell versus finished work. It is not a local tariff. Extensions on the hill need a section that shows the fall. A flat-site price from Morriston will not hold the garden up in Uplands.

A local rule to check in Swansea

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.

Questions before you phone

How do I find builders in Swansea on this list?

Uplands and Brynmill are hillside terraces facing the bay. Morriston and the valley streets are a different drive and a different roof pitch. Mumbles is not a shortcut between them. Names, service areas and phone numbers sit on the cards. Open a profile and call the firm yourself. Gorseinon appears on Swansea cards. Cardiff is the other list. The Welsh notification route for electrical work applies; do not describe it with the English form name alone.

Does this page send my job to a Swansea building & conversions firm?

No. You place the call. This site does not email or text anyone on your behalf.

What should the written price say for building & conversions in Swansea?

Section through the fall. Do not reuse a flat plot.

What is easy to miss before booking in Swansea?

Wind off the bay lifts ridge tiles on Uplands fronts. A valley-street quote that ignores clips will be the wrong one for the hill.

Other Swansea and building & conversions lists

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Builders in Aberdeen

Separate city list.

Builders in Belfast

Separate city list.

Builders in Birmingham

Separate city list.

Builders in Bradford

Separate city list.

Cleaners in Swansea

Separate trade list.

Electricians in Swansea

Separate trade list.

Gardeners in Swansea

Separate trade list.

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