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Ozzy Marsh
Spilsby, PE23
P MARSH BUILDING CONTRACTOR is an established and experienced local extension builder in Spilsby. Please contact us for a free, no obligation quote...
From £86,584
Trusted and professional extension builder in Spilsby. Experienced in all extension buildering work and keeping within budget and on quote. A J REE...
From £86,528
Spilsby, PE23
Trusted and professional extension builder in Spilsby. Experienced in all extension buildering work and keeping within budget and on quote. PAUL JA...

Building a granny annexe ranges from £86,528 (PAUL JACKSON BUILDING CONTRS based in PE23) to £87,304 (P MARSH BUILDING CONTRACTOR based in PE23), 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 Spilsby by posting a job with HaMuch. We will send it to extension builders in Spilsby who will be happy to help you.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Granny Annexe near East Lindsey | £27 | £198 |
| Granny Annexe near Boston | £28 | £262 |
| Granny Annexe near Cleethorpes | £32 | £246 |
| Granny Annexe near North East Lincolnshire | £32 | £246 |
| Granny Annexe near Grimsby | £32 | £246 |
| Granny Annexe near Spalding | £32 | £238 |
| Granny Annexe near Lincoln | £31 | £232 |
| Granny Annexe near Kings Lynn & West Norfolk | £31 | £238 |
| Granny Annexe near King's Lynn | £33 | £254 |
| Granny Annexe near North Lincolnshire | £28 | £216 |
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 - £17,305

Two storey extension - £87,708

Build a timber frame extension - £25,805

Build a swimming pool - £80,805

Single storey extension - £51,107

Side return extension - £39,310

Install an RSJ - £2,005

Outbuilding - £9,805

Build a Mansard loft conversion - £51,805

Loft conversion - £31,925

Build a kitchen extension - £41,805

Hip to gable loft conversion - £41,805

Granny annexe - £86,805

Garden office - £9,805

Convert a Garage - £15,805

Garage - £18,305

Build a flat roof extension - £21,805

Build a dormer loft conversion - £41,805

Concrete foundations - £6,055

Convert a bungalow loft - £28,805

Convert a basement - £35,310