Mablethorpe, Lincolnshire
Two-storey rear extension in Mablethorpe
Two-storey rear extension in Mablethorpe: 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.
Mablethorpe and its postcode districts LN12 are part of our Lincolnshire coverage. Two-storey rear extensions suit semi-detached houses in Mablethorpe best, where the extra bedroom matters as much as the bigger kitchen.
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 Mablethorpe?
In Mablethorpe, our guide for a two-storey rear extension is £1,750–£2,620 per square metre including VAT for a standard specification. East Midlands prices sit a little below our West Midlands baseline.
| Size | Guide price inc VAT |
|---|---|
| 3 m × 5 m footprint, two floors (30 m²) | £52,500–£78,500 |
| 4 m × 6 m footprint, two floors (48 m²) | £84,000–£125,500 |
Ground conditions, glazing, the roof and how far the house is opened up move the final figure within the range.
Do you need planning permission for a two-storey rear extension in Mablethorpe?
The planning route for a two-storey rear extension in Mablethorpe is set by England's householder rules and your council.
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. 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 Mablethorpe like to extend?
Mablethorpe has plenty of inter-war semis and bungalows, and single-storey rear extensions suit both.
How a two-storey rear extension in Mablethorpe comes together
Look round and measure
A free visit to see the back of the house, measure it, check the drains and boundaries and hear what you need.
Design and guide price
Two or three layout options with a guide price for each, so you choose the design knowing what it costs.
Approvals
Permitted development check, prior approval or planning application, then Building Regulations drawings and structural calculations, plus party wall notices where they apply.
Fixed price and build
A written price for the agreed design, a start date and a named contact through the build, ending with the building control completion certificate.
Two-storey rear extensions near Mablethorpe
Neighbouring places we cover include Louth (11.1 miles) and Skegness (14.0 miles).
- Two-storey rear extension in Louth
- Two-storey rear extension in Skegness
- Two-storey rear extension in Cleethorpes
- Two-storey rear extension in Grimsby
- Two-storey rear extension in Immingham
Other work in Mablethorpe:
FAQ
Two-storey rear extension questions in Mablethorpe
Can you match the brick or stone on my Mablethorpe house?
We source the closest match and show you samples before ordering; reclaimed materials are often the best match on older houses.
How long does a rear extension take to build in Mablethorpe?
Most single-storey rear extensions take 10 to 16 weeks on site and two-storey extensions 16 to 26 weeks, after design and approvals.
Can I add an en-suite upstairs?
Yes. We plan the soil pipe route early so the bathroom sits where drainage works without boxing through the room below.
Do you handle building control in Mablethorpe?
Yes. We apply to the council or a registered building control approver and hand over the completion certificate.
Will I need a structural engineer?
Yes for the beam over the new opening and usually the foundations; we arrange them and their calculations go to building control.
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.