Building services in Hertford
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 Hertford
| Project | Guide range (inc VAT) |
|---|---|
| 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 |
| 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 |
That range is adjusted for the East of England, where domestic building work typically costs around 6% above the national average.
Planning permission in Hertford
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 Hertford
Across the East of England, 1930s and post-war semis, newer estates and rural cottages all feature, each with different extension and loft options.
Hertford sits in Hertfordshire. We cover the whole of Hertford, including postcodes SG13. Hertford has a population of around 26,000.
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
Drawings and written quote
We prepare the design and give you a written, itemised quote with inclusions and exclusions.
- 03
Approvals in place
We handle planning, building control and neighbour notices before work starts.
- 04
Build and sign-off
We run the build to a written programme and hand over the completion certificate.
Questions from homeowners in Hertford
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 Hertford?
Yes. We take on extensions, loft conversions, conversions, renovations and new builds across Hertford, including postcodes SG13.
How much does a loft conversion cost in Hertford?
A rear dormer loft conversion in Hertford typically costs £51,000–£72,000 for a typical rear dormer with en-suite, including VAT.
How much does an extension cost in Hertford?
A single-storey extension in Hertford 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.
Do I need planning permission for an extension in Hertford?
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.