Building services in Letchworth Garden City
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 Letchworth Garden City
| Project | Guide range (inc VAT) |
|---|---|
| Double-storey extensions | £1,750–£2,650 per m² of floor area (both floors) |
| Kitchen extensions | £2,400–£3,600 per m² including a mid-range kitchen |
| Hip-to-gable loft conversions | £58,500–£82,500 for a hip-to-gable with rear dormer |
| Garage conversions | £19,000–£32,000 for a single integral garage |
| House renovations | £950–£1,900 per m² for a medium to full renovation |
| Porches | £7,000–£17,000 from a 3 m² porch to a small front extension |
The guide for Letchworth Garden City reflects typical costs in the East of England, roughly 6% above the UK-wide figure.
Planning permission in Letchworth Garden City
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 Letchworth Garden City
Many towns in the East of England have estates built since the 1970s, where garage conversions and rear extensions are popular.
We work across Letchworth Garden City and neighbouring areas such as Hitchin, Stevenage and Luton. Postcodes we cover in Letchworth Garden City include SG6 and SG7. Letchworth Garden City has a population of around 34,000.
How it works
- 01
Visit and measured survey
A free visit to understand the project, check access and take measurements.
- 02
Design and pricing
Design options, then a fixed quote based on the chosen drawings and specification.
- 03
Approvals
Planning or permitted development confirmation, building regulations and any party wall matters.
- 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 Letchworth Garden City
Do I need planning permission for an extension in Letchworth Garden City?
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.
How much does a loft conversion cost in Letchworth Garden City?
A rear dormer loft conversion in Letchworth Garden City typically costs £51,000–£72,000 for a typical rear dormer with en-suite, including VAT.
Is the home visit free?
Yes. The first visit to discuss your project and measure up for a quote is free, with no obligation.
Do you work in Letchworth Garden City?
Yes. We take on extensions, loft conversions, conversions, renovations and new builds across Letchworth Garden City, including postcodes SG6 and SG7.
How much does an extension cost in Letchworth Garden City?
A single-storey extension in Letchworth Garden City typically costs £2,050–£3,050 per m² of floor area, and a double-storey extension £1,750–£2,650 per m² of floor area (both floors), including VAT.