Building services in Camden
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 Camden
| Project | Guide range (inc VAT) |
|---|---|
| Single-storey extensions | £2,550–£3,750 per m² of floor area |
| Kitchen extensions | £2,900–£4,400 per m² including a mid-range kitchen |
| Dormer loft conversions | £62,500–£88,500 for a typical rear dormer with en-suite |
| House renovations | £1,150–£2,350 per m² for a medium to full renovation |
| Structural alterations and knock-throughs | £5,750–£12,500 for a typical knock-through with steel beam |
| Porches | £8,500–£21,000 from a 3 m² porch to a small front extension |
The guide for Camden reflects typical costs in London, roughly 30% above the UK-wide figure.
Planning permission in Camden
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 Camden
Victorian and Edwardian terraces dominate many London streets, which is why side return, wraparound and mansard projects are so common here.
If your home is in Camden or close by in Islington, Highgate and Hampstead, a free home visit is the first step.
How it works
- 01
Visit and measured survey
A free visit to understand the project, check access and take measurements.
- 02
Design and fixed quote
Drawings, structural calculations and an itemised, fixed price for the agreed specification.
- 03
Approvals in place
We handle planning, building control and neighbour notices before work starts.
- 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 Camden
Do you work in Camden?
Yes. We take on extensions, loft conversions, conversions, renovations and new builds across Camden, including postcodes N1C, NW1W, NW3 and NW26.
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 Camden?
A single-storey extension in Camden typically costs £2,550–£3,750 per m² of floor area, and a double-storey extension £2,150–£3,250 per m² of floor area (both floors), including VAT.
How much does a loft conversion cost in Camden?
A rear dormer loft conversion in Camden typically costs £62,500–£88,500 for a typical rear dormer with en-suite, including VAT.
Do I need planning permission for an extension in Camden?
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.