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Select your affordable Downton extension builder
Benjamin Belsey
Arkson builders ltd is an established and experienced local extension builder in Downton. Please contact us for a free, no obligation quote and com...
Alex Molyneux
We specialise in Epoxy Resin and Polyurethane floor coatings and screeds (very durable and seamless flooring), designed for retail, factories, manu...
From £35,175
Need an Extension Builder in Downton? Moores Build has been helping local clients (20 mile radius) with their extension buildering jobs for many ye...
From £27,300
Noel Higginson
NHBC takes great pride in what it does with a very high attention to detail
From £34,125
Downton, SP5
Need an Extension Builder in Downton? BARTITIONS DESIGN & BUILD LTD has been helping local clients (20 mile radius) with their extension builderin...
From £35,100
Need to find an Extension Builder near you for all your extension buildering work?
MILESTONE BUILDING CONTRACTORS provides a local, trusted...
From £35,700
Downton, SP5
STEWART BUILDERS is an established and experienced local extension builder in Downton. Please contact us for a free, no obligation quote and compet...
From £36,675
Shape Project Management is an established and experienced local extension builder in Downton. Please contact us for a free, no obligation quote an...
From £32,550
Downton, SP5
Need to find an Extension Builder near you for all your extension buildering work?
R F S BUILDERS provides a local, trusted extension build...
From £34,500
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...

Comparing extension builders estimates for Loft conversion gives you an idea of who will be better value but the best way to compare costs is to get actual quotes.
What to do - Get rates and quotes for the cost of a loft conversion in Downton by posting your job to extension builders in Downton.
"Loft conversion" - SALISBURY, job posted 01/01/70
"Loft conversion. Thinking of buying a property in Farley which has had all preparatory work done for a loft extension ie: roof raised, velux windows , plumbing / waste and electrics ready to go. Needs a staircase from ground floor ( opening already there ) , rooms partitioned ( ideally two bedrooms..." - SP5, job posted 01/01/70
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Loft Conversion near Salisbury | £35 | £247 |
| Loft Conversion near New Forest | £32 | £245 |
| Loft Conversion near Romsey | £32 | £230 |
| Loft Conversion near Test Valley | £37 | £261 |
| Loft Conversion near Totton | £34 | £243 |
| Loft Conversion near Chandler's Ford | £34 | £245 |
| Loft Conversion near Eastleigh | £34 | £244 |
| Loft Conversion near Southampton | £34 | £243 |
| Loft Conversion near Andover | £40 | £248 |
| Loft Conversion near Christchurch | £36 | £251 |
Whether you’re looking to extend your kitchen with a side return extension or you want to convert your basement into a liveable space, read our cost guides to get an idea of how much each project costs before getting a more accurate quote from our database of reliable tradespeople.

Underpin a building - £17,410

Two storey extension - £87,866

Build a timber frame extension - £25,910

Build a swimming pool - £80,910

Single storey extension - £53,208

Side return extension - £40,492

Install an RSJ - £2,110

Outbuilding - £9,910

Build a Mansard loft conversion - £51,910

Loft conversion - £32,910

Build a kitchen extension - £41,910

Hip to gable loft conversion - £41,910

Granny annexe - £86,910

Garden office - £9,910

Convert a Garage - £15,910

Garage - £18,410

Build a flat roof extension - £21,910

Build a dormer loft conversion - £41,910

Concrete foundations - £6,160

Convert a bungalow loft - £28,910

Convert a basement - £36,492