Building services in Grantham
House extensions
- Single-storey extensions
- Double-storey extensions
- Side extensions
- Side return extensions
- Wraparound extensions
- Kitchen extensions
- Orangeries
- Glazed and contemporary extensions
- Porches
Loft conversions
- Dormer loft conversions
- Hip-to-gable loft conversions
- Mansard loft conversions
- Rooflight loft conversions
- Bungalow loft conversions
Garage, basement and barn conversions
New build homes
Renovations and structural work
Design and approvals
Guide prices in Grantham
| Project | Guide range (inc VAT) |
|---|---|
| Single-storey extensions | £1,850–£2,750 per m² of floor area |
| Kitchen extensions | £2,150–£3,250 per m² including a mid-range kitchen |
| Hip-to-gable loft conversions | £52,000–£74,000 for a hip-to-gable with rear dormer |
| Garage conversions | £17,000–£28,500 for a single integral garage |
| Structural alterations and knock-throughs | £4,250–£9,000 for a typical knock-through with steel beam |
| Orangeries | £2,300–£3,250 per m² of floor area |
Prices across the East Midlands are typically 5% below the UK average for this kind of work, which is reflected in the range for Grantham.
Planning permission in Grantham
In England a single-storey rear extension is often permitted development: broadly up to 3 metres deep on a semi-detached or terraced house and 4 metres on a detached house, no higher than 4 metres, with eaves no higher than 3 metres within 2 metres of a boundary, and covering no more than half the garden. The larger home extension scheme allows up to 6 or 8 metres if you notify the council first and neighbours have a chance to comment. In conservation areas, National Parks and National Landscapes the larger home extension route, side extensions and cladding are not permitted development. Flats and houses whose rights have been removed need a planning application, and listed buildings need listed building consent.
Building regulations approval comes from the council’s building control service or a registered building control approver. The work is inspected at key stages, such as foundations, drainage and insulation, and a completion certificate is issued at the end.
About building in Grantham
In the East Midlands, many estates built since the 1960s have integral garages that convert well into a study or bedroom.
Our Grantham coverage includes postcode districts NG31, and we also work in nearby places such as Newark on Trent, Melton Mowbray and Oakham. Grantham has a population of around 45,000.
How it works
- 01
Survey and brief
We visit, discuss your ideas and budget, and survey the property or site at no cost.
- 02
Drawings and written quote
We prepare the design and give you a written, itemised quote with inclusions and exclusions.
- 03
Permissions sorted
Applications, building control and neighbour arrangements, all before the start date.
- 04
Build and handover
Work follows the agreed programme, with inspections along the way and a completion certificate at the end.
Questions from homeowners in Grantham
Do you work in Grantham?
Yes. We take on extensions, loft conversions, conversions, renovations and new builds across Grantham, including postcodes NG31.
Do I need planning permission for an extension in Grantham?
In England a single-storey rear extension is often permitted development: broadly up to 3 metres deep on a semi-detached or terraced house and 4 metres on a detached house, no higher than 4 metres, with eaves no higher than 3 metres within 2 metres of a boundary, and covering no more than half the garden. The larger home extension scheme allows up to 6 or 8 metres if you notify the council first and neighbours have a chance to comment. In conservation areas, National Parks and National Landscapes the larger home extension route, side extensions and cladding are not permitted development. Flats and houses whose rights have been removed need a planning application, and listed buildings need listed building consent.
Is the home visit free?
Yes. The first visit to discuss your project and measure up for a quote is free, with no obligation.
How much does an extension cost in Grantham?
A single-storey extension in Grantham typically costs £1,850–£2,750 per m² of floor area, and a double-storey extension £1,550–£2,400 per m² of floor area (both floors), including VAT.
How much does a loft conversion cost in Grantham?
A rear dormer loft conversion in Grantham typically costs £45,500–£64,500 for a typical rear dormer with en-suite, including VAT.