Gravesend, Kent
Two-storey rear extension in Gravesend
Two-storey rear extension in Gravesend: a larger kitchen downstairs and an extra bedroom or bathroom upstairs, under one roof. We measure the house, show you what the rules allow, price it in writing and build it.
Gravesend and its postcode districts DA11 and DA12 are part of our Kent coverage. In Gravesend, 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 Gravesend?
For Gravesend we work from the South East England rate: £2,020–£3,020 per square metre of new floor, including VAT, standard specification. South East prices run above our West Midlands baseline, mainly on labour rates and clay-soil foundations.
| Size | Guide price inc VAT |
|---|---|
| 3 m × 5 m footprint, two floors (30 m²) | £60,500–£90,500 |
| 4 m × 6 m footprint, two floors (48 m²) | £97,000–£145,000 |
We put a fixed price in writing once the design is agreed, and explain any provisional sums such as foundations.
Do you need planning permission for a two-storey rear extension in Gravesend?
Planning for a two-storey rear extension in Gravesend follows the English householder rules.
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. At the first visit we measure what is there now and tell you which route fits: permitted development, prior approval or a planning application.
What are homes in Gravesend like to extend?
Commuter semis and detached houses make up much of Gravesend, and longer gardens make England's prior approval route for deeper rear extensions worth considering.
How a two-storey rear extension in Gravesend 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.
Paperwork handled
Planning, prior approval or permitted development, Building Regulations approval, structural design and party wall notices are all handled by us.
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 Gravesend
Close by, we work in Tilbury, about 1.5 miles away, and Swanscombe, about 2.6 miles away.
- Two-storey rear extension in Tilbury
- Two-storey rear extension in Swanscombe
- Two-storey rear extension in Grays
- Two-storey rear extension in Longfield
- Two-storey rear extension in Chafford Hundred
Other work in Gravesend:
FAQ
Two-storey rear extension questions in Gravesend
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.
Can you match the brick or stone on my Gravesend house?
We source the closest match and show you samples before ordering; reclaimed materials are often the best match on older houses.
What is the 45-degree rule?
Many councils check that a two-storey extension does not cross a 45-degree line drawn from the nearest habitable window of the neighbouring house. We test it at the first drawing.
What postcode areas do you cover around Gravesend?
Including DA11 and DA12, and the surrounding Kent area.
Do I need planning permission for a rear extension in Gravesend?
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.
How much does a two-storey rear extension cost in Gravesend?
As a guide, £2,020–£3,020 per square metre including VAT for a standard specification. For example, 3 m × 5 m footprint, two floors (30 m²): about £60,500–£90,500 at that rate. Your written price follows the survey.