From £87,048
Experienced extension builder ready to quote for your work. J&J Building Solutions is the best extension builder in Swanscombe. No obligation free ...
From £86,920
Masonic Plumbing and Heating Ltd are here to help customers who need an Extension Builder in Swanscombe. We offer a competitive rate to complete al...
From £87,192
Gb construction are here to help customers who need an Extension Builder in Swanscombe. We offer a competitive rate to complete all your extension...
From £87,184
Experienced extension builder ready to quote for your work. CC&D BUILDING LTD is the best extension builder in Swanscombe. No obligation free quote...
From £87,192
NIECEIC / NAAPIT GASSAFE WATER REGULATIONS We offer services towards completion of high end construction projects to dis...
From £87,312
skilled worker who specializes in completing a wide range of building and renovation projects
From £87,616
HOUSE BUILDING SERVICES LIMITED is a trusted extension builder serving customers in Swanscombe and the surrounding area. Contact us to today to get...
From £87,200
Relax... you have found a reliable extension builder in Swanscombe. Derryard Construction Ltd is a friendly and reliable company based in Swanscomb...
From £86,968
B J CULLEN BUILDERS are here to help customers who need an Extension Builder in Swanscombe. We offer a competitive rate to complete all your extens...
From £87,032
Relax... you have found a reliable extension builder in Swanscombe. Major Building Contractors Ltd is a friendly and reliable company based in Swan...

Building a granny annexe ranges from £86,920 (Masonic Plumbing and Heating Ltd based in BR2) to £87,616 (HOUSE BUILDING SERVICES LIMITED based in DA16), but these are just estimates that can help give you an idea of who will be better value in your area.
The best thing to do is to get quotes to build a granny annexe in Swanscombe by posting a job with HaMuch. We will send it to extension builders in Swanscombe who will be happy to help you.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Granny Annexe near Northfleet | £41 | £261 |
| Granny Annexe near Grays | £41 | £261 |
| Granny Annexe near Chafford Hundred | £41 | £261 |
| Granny Annexe near Gravesend | £40 | £260 |
| Granny Annexe near Thurrock | £41 | £260 |
| Granny Annexe near Dartford | £51 | £273 |
| Granny Annexe near South Ockendon | £58 | £276 |
| Granny Annexe near Bexley | £42 | £265 |
| Granny Annexe near Stanford-le-Hope | £40 | £254 |
| Granny Annexe near Rochester | £39 | £254 |
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 - £17,666

Two storey extension - £88,250

Build a timber frame extension - £26,166

Build a swimming pool - £81,166

Single storey extension - £58,328

Side return extension - £43,372

Install an RSJ - £2,366

Outbuilding - £10,166

Build a Mansard loft conversion - £52,166

Loft conversion - £35,310

Build a kitchen extension - £42,166

Hip to gable loft conversion - £42,166

Granny annexe - £87,166

Garden office - £10,166

Convert a Garage - £16,166

Garage - £18,666

Build a flat roof extension - £22,166

Build a dormer loft conversion - £42,166

Concrete foundations - £6,416

Convert a bungalow loft - £29,166

Convert a basement - £39,372