Building services in Harwich
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 Harwich
| Project | Guide range (inc VAT) |
|---|---|
| Single-storey extensions | £2,050–£3,050 per m² of floor area |
| Double-storey extensions | £1,750–£2,650 per m² of floor area (both floors) |
| Dormer loft conversions | £51,000–£72,000 for a typical rear dormer with en-suite |
| Garage conversions | £19,000–£32,000 for a single integral garage |
| Porches | £7,000–£17,000 from a 3 m² porch to a small front extension |
| Orangeries | £2,550–£3,600 per m² of floor area |
We start from a UK-wide guide and adjust it for the East of England, where labour and materials are typically about 6% above average.
Planning permission in Harwich
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 Harwich
Across the East of England, 1930s and post-war semis, newer estates and rural cottages all feature, each with different extension and loft options.
If your home is in Harwich or close by in Felixstowe, Ipswich and Clacton-on-Sea, a free home visit is the first step. Harwich has a population of around 21,000.
How it works
- 01
Free visit
We look at the property, talk through what you want and measure up. There is no charge and no obligation.
- 02
Design and pricing
Design options, then a fixed quote based on the chosen drawings and specification.
- 03
Permissions sorted
Applications, building control and neighbour arrangements, all before the start date.
- 04
Construction and completion
We build, put right any snags and hand over the building control certificate.
Questions from homeowners in Harwich
Do I need planning permission for an extension in Harwich?
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.
Do you work in Harwich?
Yes. We take on extensions, loft conversions, conversions, renovations and new builds across Harwich, including postcodes CO12.
How much does an extension cost in Harwich?
A single-storey extension in Harwich 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.
How much does a loft conversion cost in Harwich?
A rear dormer loft conversion in Harwich typically costs £51,000–£72,000 for a typical rear dormer with en-suite, including VAT.