Relax... you have found a reliable extension builder in MK18. D Beagle Building Contractors is a friendly and reliable company based in MK18 who co...
We are Cognitive Construction, a forward-thinking design & build company.Our houses are our castles and we take great pride in transforming homes a...

Costs range from £88,024 (D Beagle Building Contractors based in MK18) to £88,108 (Cognitive Construction Ltd. based in MK18), 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 Aylesbury Vale | £36 | £246 |
| Two Storey Extension near Bicester | £35 | £249 |
| Two Storey Extension near Milton Keynes | £39 | £263 |
| Two Storey Extension near Bletchley | £39 | £265 |
| Two Storey Extension near Cherwell | £35 | £249 |
| Two Storey Extension near Aylesbury | £42 | £270 |
| Two Storey Extension near Leighton Buzzard | £38 | £270 |
| Two Storey Extension near Banbury | £33 | £239 |
| Two Storey Extension near Northampton | £35 | £239 |
| Two Storey Extension near Dunstable | £41 | £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 - £17,544

Two storey extension - £88,066

Build a timber frame extension - £26,044

Build a swimming pool - £81,044

Single storey extension - £55,880

Side return extension - £41,995

Install an RSJ - £2,244

Outbuilding - £10,044

Build a Mansard loft conversion - £52,044

Loft conversion - £34,163

Build a kitchen extension - £42,044

Hip to gable loft conversion - £42,044

Granny annexe - £87,044

Garden office - £10,044

Convert a Garage - £16,044

Garage - £18,544

Build a flat roof extension - £22,044

Build a dormer loft conversion - £42,044

Concrete foundations - £6,294

Convert a bungalow loft - £29,044

Convert a basement - £37,995