From £88,560
Dear All, I’m a plumber and heating engineer, I have access to all other trades guys that are willing to work long hours and at the weekends ...
From £87,352
Cheshunt Waltham Cross, EN7
Need to find an Extension Builder near you for all your extension buildering work?
GP Property Services provides a local, trusted extension...
From £87,272
Herts Renovations is a trusted extension builder serving customers in Cheshunt and the surrounding area. Contact us to today to get a competitive q...
From £86,928
Cheshunt, EN7
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
From £87,264
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
From £87,384
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
From £87,368
Need to find an Extension Builder near you for all your extension buildering work?
C.B.Buildings & Claims Limited T/A Concept Solutions 3 C...
From £87,096
Cheshunt Waltham cross, EN7
Loft Guru is an established extension buildering business in Cheshunt. We come highly recommended and provide competitive quotes for your work.
...From £87,344
Roberts & Co is a family run business est.2009. We specialize in Kitchen extensions and Loft conversions, and cover Hertfordshire, Essex and Greate...
From £87,144
Trusted and professional extension builder in Cheshunt. Experienced in all extension buildering work and keeping within budget and on quote. PM Hea...

Building a granny annexe ranges from £86,928 (MPG CONSTRUCTION based in EN7) to £88,560 (Flamstead Building Services Ltd based in EN8), 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 Cheshunt by posting a job with HaMuch. We will send it to extension builders in Cheshunt who will be happy to help you.
"Granny annexe" - EN3, job posted 03/08/25
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Granny Annexe near Cheshunt | £48 | £286 |
| Granny Annexe near Hoddesdon | £46 | £296 |
| Granny Annexe near Potters Bar | £43 | £273 |
| Granny Annexe near Epping Forest | £44 | £273 |
| Granny Annexe near Hertford | £46 | £289 |
| Granny Annexe near High Barnet | £43 | £272 |
| Granny Annexe near Loughton | £44 | £273 |
| Granny Annexe near Ware | £47 | £296 |
| Granny Annexe near Hatfield | £64 | £283 |
| Granny Annexe near Welwyn Garden City | £42 | £268 |
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 - £17,871

Two storey extension - £88,557

Build a timber frame extension - £26,371

Build a swimming pool - £81,371

Single storey extension - £62,424

Side return extension - £45,676

Install an RSJ - £2,571

Outbuilding - £10,371

Build a Mansard loft conversion - £52,371

Loft conversion - £37,230

Build a kitchen extension - £42,371

Hip to gable loft conversion - £42,371

Granny annexe - £87,371

Garden office - £10,371

Convert a Garage - £16,371

Garage - £18,871

Build a flat roof extension - £22,371

Build a dormer loft conversion - £42,371

Concrete foundations - £6,621

Convert a bungalow loft - £29,371

Convert a basement - £41,676