Cleethorpes, Lincolnshire
Glazed rear extension in Cleethorpes
Glazed rear extension in Cleethorpes: full-height glass, slim frames and big rooflights for the most open rear room. We measure the house, show you what the rules allow, price it in writing and build it.
We cover Cleethorpes (DN35) as part of our Lincolnshire work. A wide sliding door with one long rooflight, rather than a fully glazed roof, keeps a glass-led extension usable in summer.
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 Cleethorpes?
For Cleethorpes we work from the East Midlands rate: £2,720–£4,660 per square metre of new floor, including VAT, 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 |
Your written price follows a measured survey and an agreed design, so it reflects your house, not an average.
Do you need planning permission for a glazed rear extension in Cleethorpes?
Planning for a glazed rear extension in Cleethorpes follows the English householder rules.
In England a single-storey rear extension can often be built under permitted development: up to 3 metres beyond the original rear wall of an attached house, or 4 metres on a detached house, no higher than 4 metres, with eaves no higher than 3 metres if any part is 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. 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 Cleethorpes like to extend?
Cleethorpes has plenty of inter-war semis and bungalows, and single-storey rear extensions suit both.
How a glazed rear extension in Cleethorpes 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.
Options and costs
We draw layout options and price each one, so the budget shapes the design rather than surprising you later.
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.
Glazed rear extensions near Cleethorpes
Neighbouring places we cover include Grimsby (1.8 miles) and Immingham (8.4 miles).
- Glazed rear extension in Grimsby
- Glazed rear extension in Immingham
- Glazed rear extension in Louth
- Glazed rear extension in Hedon
- Glazed rear extension in Kingston upon Hull
Other work in Cleethorpes:
FAQ
Glazed rear extension questions in Cleethorpes
What postcode areas do you cover around Cleethorpes?
Including DN35, and the surrounding Lincolnshire area.
Do I need planning permission for a rear extension in Cleethorpes?
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.
Is there a limit on how much glass I can have?
In England the simple rule is 25% of the floor area plus openings removed; more is allowed with a calculation showing the house still meets Part L.
How much does a glazed rear extension cost in Cleethorpes?
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.
Do you handle building control in Cleethorpes?
Yes. We apply to the council or a registered building control approver and hand over the completion certificate.
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.