Southampton · Building & conversions

Builders in Southampton

Phone numbers for builders covering Southampton — 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. Eastleigh and Totton appear on Southampton cards. Portsmouth is a separate list; a firm that says both harbours still has to say which morning is yours. 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

11 businesses on this list.

TEW BROTHERS LIMITED

Painting & decorating, Building & conversions · Southampton

Unit 5 The R J Mitchell Centre, Spitfire Quay, Hazel Road, Woolston, Southampton SO19 7GB

Building, extensions and refurbishment

Quote on request.

023 8044 3773Open profile

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. A loft over a Shirley bay has to clear the bay ceiling. Ask for that section on the drawing, and where the skip goes if the front is a bus route.

A local rule to check in Southampton

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 Southampton on this list?

Shirley and Portswood are 1930s houses and terraces inland from the water. The Itchen and the docks are a different roof and a different parking problem from a Freemantle bay. Names, service areas and phone numbers sit on the cards. Open a profile and call the firm yourself. Eastleigh and Totton appear on Southampton cards. Portsmouth is a separate list; a firm that says both harbours still has to say which morning is yours.

Does this page send my job to a Southampton 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 Southampton?

Bay section on the loft drawing, skip off the bus route.

What is easy to miss before booking in Southampton?

Bay windows in Shirley leak at the flat roof over the bay. The main tile pitch can be sound. Ask them to look up at the bay before they say 'new roof'.

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