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Extension Builders in the UK. The average hourly rate of the 10 Extension Builders listed is £130.   Extension Builder rates vary with location. For example, DANIEL COX BUILDING SERVICES in Larbert charges from £35 per hour. 

When hiring Extension Builders in the UK get multiple quote to compare prices and services.

Extension Builder cost in the UK

£30/hr

£240/day

Rates updated Oct 26
Get quotes

M&C JOINERS

Mark Munro

We aim to provide quality workmanship on every job that will exceed your expectations. Our quotes are reasonable and competitive and we guarantee t...

"Dear Mr Stradling We are buying a house in Pitney and our surveyor (who used to live in Upton) recommended we contact you to get a quote for works required. I hope you can help! My name is Gaille MacKinnon and number is 0797 742x xx . Many thanks Gaille" - TA10, job posted 20/10/26

£40/hr

£350/day

Rates updated Oct 26
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Kerson Construction Ltd

Relax... you have found a reliable extension builder in Tansor. Kerson Construction Ltd is a friendly and reliable company based in Tansor who cons...

"Build a flat roof extension 5M X 10M" - LA14, job posted 18/10/26

£30/hr

£240/day

Rates updated Oct 26
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Tyrone Turbos

Relax... you have found a reliable extension builder in Tyrone. Tyrone Turbos is a friendly and reliable company based in Tyrone who consider no jo...

"Kitchen extension 8 m long by 4 m wide" - MK2, job posted 16/10/26

£1000/hr

£500/day

Rates updated Sep 26
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JR Removals

Since 2001 we have been designing and crafting high quality house renovations in London and the South East..I do full renovations, I have i...

"Loft conversion" - WR14, job posted 16/10/26

£33/hr

£256/day

Member since October 2026

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Sparkcleanrepair

Khalid Osman

We agree on the work, price and appointment before starting. Our approach focuses on clear communication, punctuality, careful workmanship and leav...

"Garage" - FK5, job posted 15/10/26

£25/hr

£191/day

Rates verified Oct 26
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C O JOYCE LIMITED

Colin Joyce

Reliable cheap clean over 50 years experience 

"I am a portfolio landlord purchasing a mid-terrace house in Burnley (BB11) and need a structural contractor to install steel supports for a loft chimney stack Full structural calculations and drawings are already completed and approved on paper by AAASE Consultants Ltd. I can email the full 11-page..." - BB11, job posted 14/10/26

£36/hr

£289/day

Rates verified Oct 26
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Jones Masonry Ltd

Lee Jones

Jones Masonry Ltd is a trusted extension builder serving customers in Cleckheaton and the surrounding area. Contact us to today to get a competiti...

"Loft conversion 2 bedrooms" - ST2, job posted 14/10/26

£29/hr

£227/day

Rates verified Oct 26
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Ambassador Home Extensions

We understand that adding an extension or loft conversion to your house can often be stressful, time-consuming and inconvenient. But we believe tha...

"To convert a garage to bedroom with ensuite, i would like to book a viewing so i can have an estimation quote. Thank you" - PE2, job posted 14/10/26

£42/hr

£273/day

Member since October 2026

Get quotes

Buildmac Ltd

Chris Czerwinski

About us: Buildmac Ltd is a well-established, trustworthy, reliable and professional business based in High Wycombe, covering all surrounding areas...

"I am a portfolio landlord purchasing a mid-terrace house in Burnley (BB11) and need a structural contractor to install steel supports for a loft chimney stack Full structural calculations and drawings are already completed and approved on paper by AAASE Consultants Ltd. I can email the full 11-page..." - BURNLEY, job posted 14/10/26

£35/hr

£255/day

Rates verified Oct 26
Get quotes

DANIEL COX BUILDING SERVICES

Need an Extension Builder in Larbert? DANIEL COX BUILDING SERVICES has been helping local clients (20 mile radius) with their extension buildering ...

"I am a portfolio landlord purchasing a mid-terrace house in Burnley (BB11) and need a structural contractor to install steel supports for a loft chimney stack Full structural calculations and drawings are already completed and approved on paper by AAASE Consultants Ltd. I can email the full 11-page..." - BURNLEY, job posted 14/10/26

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Prices for extension builders in the UK

Extension Builder hourly and daily rates (excluding VAT or callout charges).

Find more hourly & daily rates for Extension Builders in the UK

Extension BuildersHourly RateDaily Rate
London£45£274
Birmingham£28£226
Glasgow£35£259
Leeds£31£236
Liverpool£31£222
Sheffield£32£261
Edinburgh£36£263
Manchester£32£236
Belfast£23£161
Bristol£33£255
Leicester£29£213
Cardiff£34£219
Coventry£28£221
Bradford£29£224
Nottingham£34£241

Extension Builder hourly and daily rates (excluding VAT or callout charges).

Find more hourly & daily rates for Extension Builders in the UK

Extension BuildersHourly RateDaily Rate
Newcastle Upon Tyne£33£236
Brighton and Hove£35£251
Derby£29£227
Hull£29£223
Plymouth£30£230
Stoke-on-Trent£29£226
Southampton£34£243
Northampton£35£239
Wolverhampton£28£222
Luton£42£279
Portsmouth£36£250
Reading£42£266
Norwich£25£200
Milton Keynes£39£263
Bournemouth£38£257

Extension Builder hourly and daily rates (excluding VAT or callout charges).

Find more hourly & daily rates for Extension Builders in the UK

Extension BuildersHourly RateDaily Rate
Aberdeen£32£302
Peterborough£40£281
Bolton£31£219
Swindon£31£238
Southend-on-Sea£37£247
Warrington£31£222
Oxford£37£261
Swansea£29£229
Sunderland£33£251
Slough£42£272
Kingswood£34£257
Telford£30£241
Cambridge£38£271
Ipswich£33£235
Blackpool£29£209

Extension Builder hourly and daily rates (excluding VAT or callout charges).

Find more hourly & daily rates for Extension Builders in the UK

Extension BuildersHourly RateDaily Rate
Middlesbrough£43£236
Dundee£38£285
Huddersfield£29£224
York£30£229
Poole£38£250
Watford£43£278
Newport£41£233
Colchester£34£232
Exeter£27£221
Blackburn£33£247
Crawley£38£255
Gloucester£31£236
Stockport£35£234
Basingstoke£39£274
Basildon£39£251

Extension Builder hourly and daily rates (excluding VAT or callout charges).

Find more hourly & daily rates for Extension Builders in the UK

Extension BuildersHourly RateDaily Rate
Cheltenham£32£250
Gateshead£33£236
Worthing£35£249
Rochdale£30£221
Oldham£31£229
Chelmsford£38£258
Birkenhead£31£219
Maidstone£40£255
Gillingham£39£253
Salford£32£237
Solihull£29£231
St Helens£31£224
Worcester£28£218
Lincoln£31£232
West Bromwich£28£225

Extension Builder hourly and daily rates (excluding VAT or callout charges).

Find more hourly & daily rates for Extension Builders in the UK

Extension BuildersHourly RateDaily Rate
Eastbourne£32£245
Wakefield£31£240
Wythenshawe£31£229
Bedford£45£278
Hemel Hempstead£42£270
Preston£30£218
Stevenage£44£282
Southport£27£198
Bath£32£249
Harlow£43£288
Sutton Coldfield£29£228
Darlington£60£222
Chester£32£220
Hastings£31£246
Nuneaton£29£225

Extension Builder hourly and daily rates (excluding VAT or callout charges).

Find more hourly & daily rates for Extension Builders in the UK

Extension BuildersHourly RateDaily Rate
Halifax£32£243
Hartlepool£40£236
Aylesbury£42£270
Doncaster£29£238
Grimsby£32£246
Wallasey£32£224
Londonderry£24£190
Stockton-on-Tees£41£228
Weston-super-Mare£33£253
High Wycombe£39£272
Ashford£36£256
Redditch£32£234
Wigan£30£220
Scunthorpe£26£207
Bury£30£219

Extension Builder hourly and daily rates (excluding VAT or callout charges).

Find more hourly & daily rates for Extension Builders in the UK

Extension BuildersHourly RateDaily Rate
Paisley£34£259
Bracknell£41£285
Burnley£29£219
Rugby£31£224
Guildford£53£298
Carlisle£24£203
Chatham£39£254
East Kilbride£34£247
Newcastle-under-Lyme£30£228
Chesterfield£33£257
Burton upon Trent£33£257
Tamworth£33£288
Shrewsbury£32£249
Woking£43£277
St Albans£63£289

Extension Builder hourly and daily rates (excluding VAT or callout charges).

Find more hourly & daily rates for Extension Builders in the UK

Extension BuildersHourly RateDaily Rate
Harrogate£29£225
Crewe£29£224
South Shields£36£257
Craigavon£23£181
Stafford£29£224
Rotherham£32£257
Barnsley£31£242
Lowestoft£24£197
Walsall£29£226
Gosport£35£246
Dartford£51£273
Bognor Regis£35£247
Corby£30£214
Paignton£27£222
Maidenhead£41£273

Extension Builder hourly and daily rates (excluding VAT or callout charges).

Find more hourly & daily rates for Extension Builders in the UK

Extension BuildersHourly RateDaily Rate
Rochester£39£254
Ellesmere Port£31£214
Loughborough£32£262
Dudley£28£225
Bangor£24£183
Dewsbury£33£245
Mansfield£33£261
Margate£27£208
Kettering£34£237
Cannock£28£227
Sale£32£235
Taunton£31£242
Runcorn£33£228
Farnborough£41£272
Tynemouth£36£257

Extension Builder hourly and daily rates (excluding VAT or callout charges).

Find more hourly & daily rates for Extension Builders in the UK

Extension BuildersHourly RateDaily Rate
Hereford£30£228
Halesowen£28£225
Widnes£31£220
Huyton with Roby£31£225
Scarborough£29£234
Gravesend£40£260
Bebington£31£222
Kidderminster£26£209
Stourbridge£28£223
Barry£33£223
Smethwick£28£225
Dunfermline£46£285
Livingston£34£256
Weymouth£33£260
Brentwood£39£255

Extension Builder hourly and daily rates (excluding VAT or callout charges).

Find more hourly & daily rates for Extension Builders in the UK

Extension BuildersHourly RateDaily Rate
Barrow-in-Furness£25£204
Hamilton£29£213
Canterbury£31£232
Wellingborough£39£251
Sittingbourne£35£246
Macclesfield£32£239
Bootle£32£224
Carlton£33£242
Esher£43£274
Clacton-on-Sea£31£230
Lancaster£25£211
Beeston£31£236
Banbury£33£239
Torquay£28£223
Folkestone£31£233

Find a local builder who can convert your loft or build a side return extension at a great price

Find a local builder who can convert your loft or build a side return extension at a great price

No job is too big or too small – whether you want to convert your garage or build a large house extension, a specialist builder can help.

What services do builders that specialise in extensions provide?

Loft and basement conversions

  • Boarding your loft ready for new flooring
  • Building partition walls to separate storage space from room space
  • Creating dormers
  • Moving ceiling and roof joists
  • Creating a cinema room in your basement
  • Excavating your basement ready for a sump pump

Extensions

  • Building a side return extension to increase your kitchen space
  • Adding a single-storey extension to create an open-plan living area
  • Building a two-storey extension to add extra bedrooms to your home

Garage conversions

  • Converting a garage into a home gym, games room or office space
  • Creating a granny annexe in your garage
  • Laying epoxy flooring in your garage

So, if you need a builder to convert or extend your home, HaMuch has thousands of friendly, registered professionals ready to help with your house extension or basement, loft or garage conversion.

Hourly and day rates of extension builders in the UK

Why do you need a renovation specialist?

A house extension or loft, basement and garage conversion is not a project to undertake if you’re a DIYer. These types of projects require extensive knowledge, skills and experience in construction and renovation, which only qualified tradespeople can provide.

Project management: A company that specialises in extensions and conversions will have all the expertise to handle the complexities of a project of this size. From obtaining permits for skips, complying with building regulations and coordinating with other tradespeople to managing structural aspects, they can deal with it all.

Access to subcontractors and suppliers: Specialist extension builders have access to a network of subcontractors and good suppliers, so you can be sure that you’ll get the highest-quality materials and specialised tradespeople for your project. Whether it’s electricians, plumbers, carpenters or roofers, a company that specialises in house extensions and conversions can assemble a reliable team of professionals to work on your project.

Saves you time: Have you ever wondered how long it would take you to build your own extension or convert your garage, basement or loft? We’re betting it’s longer than it would take a professional. It’s a significant undertaking that demands considerable planning, organisation and project management skills – let alone technical skills! It’ll take you weeks to learn how to carry out all the tasks involved in the project before you even get started. Leave it to the professionals so you can focus on other aspects of your life and get it done quickly.

Peace of mind: Using a reputable specialist extension builder will give you peace of mind that you’ve spent your money wisely. If you try to renovate your home yourself, you could end up making costly mistakes, but use a qualified professional and they will have the right insurance to carry out the work and should offer you warranties. You’re ensuring that your dream conversion is brought to life effectively, efficiently and to the highest standard of quality, ultimately adding value to your home.

What does a specialist extension builder do?

A builder that specialises in extensions works on anything that extends, converts or renovates your home. It’s worth getting in touch with a few renovation experts as they will all specialise in different projects, so it’s important you choose the right person for the job. Here are just a few of the jobs that a renovation company may undertake:

Excavating and digging trenches: If you’re having a basement conversion, you’ll need to have the right drainage to ensure your basement doesn’t flood. Your renovation company can dig trenches for French drains and basement sump pumps so you can use your basement whatever the weather.

Building partition walls: While loft conversions are a fantastic use of space, if you convert it into a bedroom you’ll lose convenient storage space. Section off a part of your loft conversion with a partition wall and door so you’ve still got part of your loft to keep the Christmas decorations in.

Digging foundations: If you’re extending your home, whether with a side return extension or a standard conversion from the rear, you’ll need solid foundations to keep it standing for years to come. Renovation companies will dig foundations to the right depth to ensure your extension stays solid and stable.

Laying epoxy resin floor: Garages converted into home gyms can benefit from epoxy resin flooring. Epoxy is resistant to scuffs and scratches and is easy to clean, making it perfect for a gym environment. Plus, its glossy finish looks attractive and pairs well with mirrors. A specialist builder will be able to advise on whether it’s a good option for you.

How to find a specialist extension builder near you

To find a specialist extension builder near you, follow our simple three-step process:

  1. Post your job: Enter the trade you need and the postcode of your project then describe your job.
  2. Get quotes: We’ll send your job details to extension builder specialists in your area and match you with local professional tradespeople qualified and skilled to complete your project. We’ll notify you via text or email when a tradesperson is available to quote.
  3. Select your tradesman: Compare rates, proximity, review profiles and experience of the tradesmen interested in working with you. You can use HaMuch to safely message, ask questions or just phone them — you’re in complete control!

Our search tools are designed to help you find a tradesman that best suits your needs, budget and location.

Are you looking for a extension builder? Find the perfect tradesmen for you on HaMuch. Our directory lists vetted, trusted extension builders near you.

Find out how much extension builder jobs cost

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