Cleethorpes home office extensions, designed and built
From the first sketch to final sign-off, we plan and build home office extensions in Cleethorpes and the surrounding Lincolnshire area.
- Guide price in CleethorpesFrom £15,000 inc VAT
- PlanningOften permitted development (3–4 m), or prior approval up to 6–8 m
- Build time8–12 weeks on site
- Postcode districtsDN31, DN32, DN35

Extensions in and around Cleethorpes
Across DN31, DN32, DN35, we can visit, measure and advise. Nearby, we also take on projects in Grimsby (2 miles), Scunthorpe (26 miles), Lincoln (31 miles), Skegness (33 miles).
Hull, in East Riding of Yorkshire, is roughly 18 miles from Cleethorpes and also on our list. The East Midlands has plenty of inter-war and post-war semis and detached houses with room to extend, alongside Victorian terraces in the towns.
Who a home office extension suits
- People who work from home most of the week
- Households that need a second quiet room
- Homes where a loft or garden room is not practical
What should I budget for a home office extension in Cleethorpes?
Prices below are for Cleethorpes, using the East Midlands factor of ×0.95. They are guide ranges including VAT for the build only, not a quote.
Typical rates in Cleethorpes: £1,760 to £3,230 per m² including VAT, depending on specification.
| Size | Essential | Standard | Premium |
|---|---|---|---|
| 2.5 m × 3.2 m 8 m² | £15,000 – £18,500 | £16,000 – £21,000 | £20,500 – £26,000 |
| 3 m × 3.6 m 11 m² | £19,000 – £23,000 | £22,000 – £28,500 | £28,000 – £36,000 |
| 3 m × 5 m 15 m² | £26,000 – £31,500 | £30,500 – £38,500 | £38,000 – £48,500 |
For a figure based on your own dimensions, use our guide-price tool.
Planning and approvals in Cleethorpes
In England a single-storey rear extension can usually go up to 3 m beyond the original rear wall of a semi-detached or terraced house, or 4 m on a detached house, without a planning application, provided it is no more than 4 m high, keeps eaves to 3 m within 2 m of a boundary and, with other buildings, covers no more than half the land around the original house. The larger home extension prior approval scheme raises those depths to 6 m and 8 m, with neighbours notified and a 42-day decision.
In a conservation area, national park, National Landscape, the Broads or a World Heritage Site the permitted development limits are tighter (no side or two-storey extensions without an application). Listed homes need listed building consent, and if permitted development rights have been removed, any extension needs an application.
Building over or within 3 m of a public sewer needs the water company's consent, usually through a build-over agreement, before the foundations go in.
Building regulations approval is separate from planning. In England you can use the council's building control team or a registered building control approver; a full plans application gets the drawings checked before work starts, and the inspector signs the work off with a completion certificate.
Applications are decided by the local planning authority (your district, borough or unitary council).
What happens next
Site visits are free and there is no obligation. Where drawings are needed, the design stage is priced in writing before it starts.
Free site visit
A designer visits, takes measurements and photos, and discusses layouts, budget and timing with you.
Design and approvals
Drawings are prepared and agreed with you, then submitted for the right planning route and building regulations approval.
Fixed written price
The price is fixed in writing once the design is settled, with a clear programme and payment stages.
Build and sign-off
We build it with one project manager, book the building control inspections and hand over the completion certificate.
Common questions in Cleethorpes
How long does a home office extension take to build in Cleethorpes?
On site, typically 8 to 12 weeks once approvals are in place. Before that, allow 4–10 weeks design and approvals.
Can I see a price before committing to anything?
Yes. The guide prices on this page are adjusted for Cleethorpes, and the guide-price tool gives a range for your own size. After the survey you get a written price before anything is agreed.
Will my neighbours in Cleethorpes be involved?
If a planning application or prior approval is needed, the council notifies neighbours. If the work is on or near a shared boundary, party wall notices may also be needed.
How much does a home office extension cost?
Our guide range is about £1,760 to £3,230 per m² including VAT. An 11 m² standard-spec office is typically £22,000 to £28,500 in Cleethorpes.
Can I claim the cost against tax?
Building work on your home is not normally an allowable business expense, and claiming it can have capital gains tax effects. Speak to an accountant before assuming any tax relief.
Book a free site visit in Cleethorpes
We will measure up, check the planning position and give you honest guide figures.
- Free, no-obligation site visit
- Planning route checked before you spend on drawings
- Written price once the design is agreed
- Building control sign-off at the end
Prefer to talk? Call 0800 088 6341 or .
Book a free site visit
Tell us a little about the project and we will arrange a time.