Hemel Hempstead, Hertfordshire
Two-storey rear extension in Hemel Hempstead
For homes in Hemel Hempstead, a two-storey rear extension is often the simplest way to gain space without moving. A larger kitchen downstairs and an extra bedroom or bathroom upstairs, under one roof. We take it from survey to completion certificate.
Hemel Hempstead sits in Hertfordshire, with postcode districts including HP1, HP2 and HP3. In Hemel Hempstead, a two-storey rear extension is worth comparing with the cost of moving once stamp duty, agents' and legal fees are counted.
Book a free site visit
Tell us about the house and we'll call to arrange a free, no-obligation visit.
How much does a two-storey rear extension cost in Hemel Hempstead?
For Hemel Hempstead we work from the East of England rate: £1,910–£2,860 per square metre of new floor, including VAT, standard specification. East of England prices run slightly above our West Midlands baseline; clay soils near trees are the main foundation variable.
| Size | Guide price inc VAT |
|---|---|
| 3 m × 5 m footprint, two floors (30 m²) | £57,000–£86,000 |
| 4 m × 6 m footprint, two floors (48 m²) | £91,500–£137,500 |
These are guide ranges; the written quote after the survey is the figure that counts.
Do you need planning permission for a two-storey rear extension in Hemel Hempstead?
Whether your two-storey rear extension in Hemel Hempstead needs a planning application depends on its size, your house and any local restrictions.
England's rules allow a rear extension of more than one storey without an application only when it is no deeper than 3 metres and at least 7 metres from the boundary opposite the rear wall, and never on designated land. Most two-storey schemes need householder planning permission.
Conservation areas, National Parks, National Landscapes and the Broads restrict permitted development, and listed buildings always need listed building consent. We check your house's planning history and any conservation area before drawing, so the route is clear before you spend on plans.
What are homes in Hemel Hempstead like to extend?
Hemel Hempstead mixes Victorian terraces with 1930s semis, so both side returns and full-width kitchen extensions suit houses here.
How a two-storey rear extension in Hemel Hempstead comes together
Free site visit
We measure the house and garden, look at the back wall, drainage and boundaries, and talk through what you want from the space.
Drawings and budget
Floor plans and elevations for the options, each with a guide price.
Paperwork handled
Planning, prior approval or permitted development, Building Regulations approval, structural design and party wall notices are all handled by us.
Written price, then build
Once the design and approvals are in place, you get a fixed written price and programme, and we build through to sign-off.
Two-storey rear extensions near Hemel Hempstead
We also build two-storey rear extensions in nearby Abbots Langley (3.6 miles) and Berkhamsted (5.0 miles).
- Two-storey rear extension in Abbots Langley
- Two-storey rear extension in Berkhamsted
- Two-storey rear extension in St Albans
- Two-storey rear extension in North Watford
- Two-storey rear extension in Harpenden
Other work in Hemel Hempstead:
FAQ
Two-storey rear extension questions in Hemel Hempstead
Do you handle building control in Hemel Hempstead?
Yes. We apply to the council or a registered building control approver and hand over the completion certificate.
What postcode areas do you cover around Hemel Hempstead?
Including HP1, HP2 and HP3, and the surrounding Hertfordshire area.
Does a two-storey rear extension need planning permission?
Almost always. England and Northern Ireland allow 3 metres without an application only if at least 7 metres remains to the rear boundary; Wales and Scotland are similar or stricter.
Can I get a price without a visit?
Our online guide-price tool gives a range in a couple of minutes. A written price needs a survey.
Do I need planning permission for a rear extension in Hemel Hempstead?
Often not for a single-storey rear extension of up to 3 metres (4 metres on a detached house) under permitted development, or up to 6 or 8 metres with prior approval, unless the house is in a conservation area or its rights have been removed.
Who will build my extension?
Vetted building teams working under contract to us. Your contract is with S&K Property Investments and Improvement Ltd for the design and the build.