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Jon Howard Construction Ltd is a trusted extension builder serving customers in Harlow and the surrounding area. Contact us to today to get a compe...
Colin
Harlow, CM20
We are small building company working for the residential and domestic properties? We work on all types of buildings creating Loft conversion and H...
D C Salsbury Builders is an established and experienced local extension builder in Harlow. Please contact us for a free, no obligation quote and co...
Experienced extension builder ready to quote for your work. All Roofing & Guttering is the best extension builder in Harlow. No obligation free quo...
J G BUILDING SERVICES is a trusted extension builder serving customers in Harlow and the surrounding area. Contact us to today to get a competitive...
Dan Nevill
Nevill Design & Build specialises in high-quality house extensions, loft conversions, structural alterations, and full refurbishments. We’ve deli...
From £88,636
Hopson Bros Services is a trusted extension builder serving customers in Harlow and the surrounding area. Contact us to today to get a competitive ...
From £88,336
Experienced extension builder ready to quote for your work. Groome & Sons Ltd is the best extension builder in Harlow. No obligation free quotes an...
From £88,576
D E BRACKEN BUILDING SERVICES is an established and experienced local extension builder in Harlow. Please contact us for a free, no obligation quot...
From £88,252
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...

Costs range from £87,868 (J G BUILDING SERVICES based in CM19) to £92,728 (Essex loft extensions Ltd based in CM20), but these are just estimates. The best way to compare costs is to get real quotes from real builders.
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| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Two Storey Extension near Harlow | £43 | £288 |
| Two Storey Extension near Hoddesdon | £46 | £296 |
| Two Storey Extension near Bishop's Stortford | £42 | £264 |
| Two Storey Extension near Ware | £47 | £296 |
| Two Storey Extension near Epping Forest | £44 | £274 |
| Two Storey Extension near Loughton | £44 | £273 |
| Two Storey Extension near Cheshunt | £48 | £285 |
| Two Storey Extension near Hertford | £46 | £290 |
| Two Storey Extension near East Hertfordshire | £44 | £289 |
| Two Storey Extension near Romford | £45 | £274 |
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 - £18,008

Two storey extension - £88,762

Build a timber frame extension - £26,508

Build a swimming pool - £81,508

Single storey extension - £65,160

Side return extension - £47,215

Install an RSJ - £2,708

Outbuilding - £10,508

Build a Mansard loft conversion - £52,508

Loft conversion - £38,513

Build a kitchen extension - £42,508

Hip to gable loft conversion - £42,508

Granny annexe - £87,508

Garden office - £10,508

Convert a Garage - £16,508

Garage - £19,008

Build a flat roof extension - £22,508

Build a dormer loft conversion - £42,508

Concrete foundations - £6,758

Convert a bungalow loft - £29,508

Convert a basement - £43,215