Mandala Building Services is a family-owned design and build maintenance company, encompassing everything from residential refurbishment to large-s...
New Finishes is a trusted extension builder serving customers in Potters Bar and the surrounding area. Contact us to today to get a competitive quo...
Relax... you have found a reliable extension builder in Potters Bar. Pavillion Building Services is a friendly and reliable company based in Potter...
Rafal Szczepanski
Our homes need to be regularly maintained and from time to time they need to be rejuvenated, modernised and enhanced. When it comes to building wor...
DW Building is a trusted extension builder serving customers in Potters Bar and the surrounding area. Contact us to today to get a competitive quot...
Homeland Building Ltd is a trusted extension builder serving customers in Potters Bar and the surrounding area. Contact us to today to get a compet...
Need an Extension Builder in Potters Bar? Colin Lynch Builders has been helping local clients (10 mile radius) with their extension buildering jobs...
Wittick Building Ltd is a trusted extension builder serving customers in Potters Bar and the surrounding area. Contact us to today to get a competi...
Amarjeet Gill
Architecture and Construction all in one place.
FREE DRAWINGS for all projects we build.
At One Call Bathrooms we can tailor our service to provide a bespoke service to all Landlords and Management Agents that will guar...

Costs range from £87,808 (Colin Lynch Builders based in EN3) to £88,840 (Rafix Building based in EN4), 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 Potters Bar | £43 | £273 |
| Two Storey Extension near High Barnet | £43 | £272 |
| Two Storey Extension near Hatfield | £65 | £285 |
| Two Storey Extension near Cheshunt | £48 | £285 |
| Two Storey Extension near Borehamwood | £42 | £271 |
| Two Storey Extension near Welwyn Garden City | £42 | £269 |
| Two Storey Extension near Muswell Hill | £44 | £273 |
| Two Storey Extension near St Albans | £63 | £289 |
| Two Storey Extension near Brent Cross | £43 | £272 |
| Two Storey Extension near Hertford | £46 | £290 |
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 - £17,645

Two storey extension - £88,217

Build a timber frame extension - £26,145

Build a swimming pool - £81,145

Single storey extension - £57,896

Side return extension - £43,129

Install an RSJ - £2,345

Outbuilding - £10,145

Build a Mansard loft conversion - £52,145

Loft conversion - £35,108

Build a kitchen extension - £42,145

Hip to gable loft conversion - £42,145

Granny annexe - £87,145

Garden office - £10,145

Convert a Garage - £16,145

Garage - £18,645

Build a flat roof extension - £22,145

Build a dormer loft conversion - £42,145

Concrete foundations - £6,395

Convert a bungalow loft - £29,145

Convert a basement - £39,129