1 review
From £88,288
NIECEIC / NAAPIT GASSAFE WATER REGULATIONS We offer services towards completion of high end construction projects to dis...
"Did callout made safe my elctrical work thanks" - reviewed 16/05/23, REECYRUSSO
From £88,036
Need the extension buildering job done quickly without breaking the bank? SH Enterprise offer fast, reliable, and affordable extension buildering s...
From £88,468
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
From £88,588
Need an Extension Builder in AL9? Samuele Paolini has been helping local clients (5 mile radius) with their extension buildering jobs for many yea...
From £88,420
Trusted and professional extension builder in AL9. Experienced in all extension buildering work and keeping within budget and on quote. DC Build & ...
From £88,228
I am a qualified, builder, electrician and plumber. I have been working in the construction industry for over 23 years and have built everything fr...
From £88,456
Hi we have 15 years of experience in building and construction industry our specialization is bathrooms and renovations please have a look at the w...
From £88,636
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
From £88,468
Local Boiler Plumbing & Heating Services is an established and experienced local extension builder in AL9. Please contact us for a free, no obligat...
From £87,880
NISUP BUILDING SERVICES Company specializes in the domestic and commercial building industry :1. Refurbishm...

Costs range from £87,880 (Nisup Building Services based in HA8) to £88,636 (LALI BUILDERS based in NW10), but these are just estimates. The best way to compare costs is to get real quotes from real builders.
Post your job on HaMuch and we'll send it to extension builders to AL9.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Two Storey Extension near Hatfield | £64 | £283 |
| Two Storey Extension near Potters Bar | £43 | £273 |
| Two Storey Extension near Welwyn Garden City | £42 | £268 |
| Two Storey Extension near St Albans | £63 | £288 |
| Two Storey Extension near Cheshunt | £48 | £285 |
| Two Storey Extension near Hertford | £46 | £289 |
| Two Storey Extension near High Barnet | £43 | £272 |
| Two Storey Extension near Borehamwood | £42 | £270 |
| Two Storey Extension near Harpenden | £86 | £315 |
| Two Storey Extension near Hoddesdon | £46 | £296 |
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 - £17,731

Two storey extension - £88,347

Build a timber frame extension - £26,231

Build a swimming pool - £81,231

Single storey extension - £59,624

Side return extension - £44,101

Install an RSJ - £2,431

Outbuilding - £10,231

Build a Mansard loft conversion - £52,231

Loft conversion - £35,918

Build a kitchen extension - £42,231

Hip to gable loft conversion - £42,231

Granny annexe - £87,231

Garden office - £10,231

Convert a Garage - £16,231

Garage - £18,731

Build a flat roof extension - £22,231

Build a dormer loft conversion - £42,231

Concrete foundations - £6,481

Convert a bungalow loft - £29,231

Convert a basement - £40,101