Mablethorpe, Lincolnshire
Glazed rear extension in Mablethorpe
Thinking about a glazed rear extension in Mablethorpe? Full-height glass, slim frames and big rooflights for the most open rear room. Our team handles the drawings, the planning route and the build, and your contract is with one company throughout.
Mablethorpe and its postcode districts LN12 are part of our Lincolnshire coverage. If your garden in Mablethorpe faces south, expect us to talk about overhangs and solar-control glass before frame colours.
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 glazed rear extension cost in Mablethorpe?
In Mablethorpe, our guide for a glazed rear extension is £2,720–£4,660 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 wide × 4 m deep (12 m²) | £32,500–£56,000 |
| 4 m wide × 6 m deep (24 m²) | £65,000–£111,500 |
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 glazed rear extension in Mablethorpe?
Planning for a glazed rear extension in Mablethorpe follows the English householder rules.
English permitted development (Class A) allows a single-storey rear extension of 3 metres on a terraced or semi-detached house and 4 metres on a detached one, measured from the original house, with a maximum height of 4 metres and eaves of no more than 3 metres within 2 metres of a boundary.
New fabric must meet Approved Document L (2021 edition incorporating 2023 amendments): walls 0.18, roof 0.15 and floor 0.18 W/m²K, windows 1.4 W/m²K or Band B. Under the simple route, new windows, doors and rooflights should not exceed 25% of the extension floor area plus any openings removed; more glass is possible with a whole-house calculation.
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 Mablethorpe like to extend?
Red-brick terraces and semis are typical of Mablethorpe. Coal-mining legacy areas in parts of the East Midlands can need a Coal Authority check before foundations are designed.
How a glazed rear extension in Mablethorpe 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.
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.
Glazed rear extensions near Mablethorpe
We also build glazed and glass-box rear extensions in nearby Louth (11.1 miles) and Skegness (14.0 miles).
- Glazed rear extension in Louth
- Glazed rear extension in Skegness
- Glazed rear extension in Cleethorpes
- Glazed rear extension in Grimsby
- Glazed rear extension in Immingham
Other work in Mablethorpe:
FAQ
Glazed rear extension questions in Mablethorpe
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.
What postcode areas do you cover around Mablethorpe?
Including LN12, and the surrounding Lincolnshire area.
Does glass need planning permission?
The same rules apply as any rear extension; glass does not change the depth or height limits.
Do I need a party wall agreement?
In England, usually yes if the extension is on or near a shared boundary or the foundations are close to a neighbour's building. We serve the notices.
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.
How much does a glazed rear extension cost in Mablethorpe?
As a guide, £2,720–£4,660 per square metre including VAT for a standard specification. For example, 3 m wide × 4 m deep (12 m²): about £32,500–£56,000 at that rate. Your written price follows the survey.