Blandford Forum, Dorset
Two-storey rear extension in Blandford Forum
A larger kitchen downstairs and an extra bedroom or bathroom upstairs, under one roof. If you live in Blandford Forum and want to know what a two-storey rear extension would cost and whether it needs planning, start with the online guide price or a free site visit.
We cover Blandford Forum (DT11) as part of our Dorset work. In Blandford Forum, 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 Blandford Forum?
Guide prices for a two-storey rear extension in Blandford Forum start from our South West England rate of £1,870–£2,810 per square metre, including VAT. South West prices run slightly above our West Midlands baseline; natural stone to match the house is the main variable.
| Size | Guide price inc VAT |
|---|---|
| 3 m × 5 m footprint, two floors (30 m²) | £56,000–£84,000 |
| 4 m × 6 m footprint, two floors (48 m²) | £90,000–£135,000 |
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 Blandford Forum?
Planning for a two-storey rear extension in Blandford Forum follows the English householder rules.
A two-storey rear extension can be permitted development in England only if it projects no more than 3 metres, stays at least 7 metres from the rear boundary, matches the existing roof pitch and has obscure-glazed upper side windows. In practice most double-storey rear extensions go through a householder planning application.
Conservation areas, National Parks, National Landscapes and the Broads restrict permitted development, and listed buildings always need listed building consent. Before any drawing we look up the property's history with the council, because earlier extensions and removed rights change the answer.
What are homes in Blandford Forum like to extend?
Blandford Forum has Victorian terraces nearer the centre and post-war semis on the edges. Sloping gardens are frequent, which affects floor levels and steps down to the patio.
How a two-storey rear extension in Blandford Forum comes together
Survey visit
We visit free of charge, measure up, check access, drainage and neighbours' extensions, and note what you want the room to do.
Drawings and budget
Floor plans and elevations for the options, each with a guide price.
Approvals
Permitted development check, prior approval or planning application, then Building Regulations drawings and structural calculations, plus party wall notices where they apply.
Build and sign-off
We build to the approved drawings with regular updates, then hand over the building control completion certificate and any guarantees from suppliers.
Two-storey rear extensions near Blandford Forum
From Blandford Forum, the nearest places we also cover are Wimborne Minster (9.4 miles) and Broadstone (10.2 miles).
- Two-storey rear extension in Wimborne Minster
- Two-storey rear extension in Broadstone
- Two-storey rear extension in Canford Heath
- Two-storey rear extension in Ferndown
- Two-storey rear extension in Poole
Other work in Blandford Forum:
FAQ
Two-storey rear extension questions in Blandford Forum
Can I live at home while the extension is built?
Usually yes. Most of the work is outside until the back wall is opened near the end, and that stage is screened off.
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.
Will we need to move out?
Rarely. The first-floor opening is made late in the job and sealed with temporary screens.
Do I need planning permission for a rear extension in Blandford Forum?
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.
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.
Is the site visit in Blandford Forum free?
Yes. We visit, measure up and talk through the options with no cost and no obligation.