England
Rear extensions in Lincolnshire
Rear extensions in Lincolnshire: we cover 17 towns including Lincoln, Grimsby and Scunthorpe, with design, approvals and the build under one contract.
What are homes in Lincolnshire like to extend?
Red-brick terraces and semis are typical of Lincolnshire. Coal-mining legacy areas in parts of the East Midlands can need a Coal Authority check before foundations are designed.
Rear extension prices in Lincolnshire
East Midlands prices sit a little below our West Midlands baseline. Per square metre including VAT, standard specification:
| Extension | Per m² |
|---|---|
| Single-storey rear extension | £1,840–£3,010 |
| Two-storey (per m² across both floors) | £1,750–£2,620 |
| Side return | £2,230–£3,690 |
| Wraparound | £2,130–£3,490 |
| Glass-led | £2,720–£4,660 |
Planning and building rules in Lincolnshire
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.
England also has the larger home extension route: a single-storey rear extension of up to 6 metres on an attached house or 8 metres on a detached house, after prior approval from the council. The council notifies your neighbours and has 42 days to decide; the fee is £249 (£310 for applications made from 8 December 2026). The route is not available on designated land such as conservation areas.
Planning and Building Regulations are separate in England: even a permitted development extension is inspected for foundations, drainage, structure, insulation, fire safety and ventilation, through the council or a registered building control approver, ending with a completion certificate.
Because rear extensions often sit on or near the boundary, the Party Wall etc. Act 1996 usually applies in England. Notices go out one or two months before work depending on the type of work, and a surveyor's award is only needed if a neighbour does not consent.
Conservation areas, National Parks, National Landscapes and the Broads restrict permitted development, and listed buildings always need listed building consent.
Rear extensions we build in Lincolnshire
- Rear extensions for semi-detached houses
- Rear extensions for detached houses
- Rear extensions for bungalows
- Flat-roof rear extensions
- Pitched and lean-to roof rear extensions
- Knocking through to a rear extension
- Roof lanterns and rooflights for rear extensions
- Permitted development rear extensions
- Larger home extension prior approval (England)
- Rear extension plans and planning applications
- Building Regulations for rear extensions
- Single-storey rear extensions
- Two-storey rear extensions
- Kitchen-diner rear extensions
- Side return extensions
- Wraparound extensions
- Glazed and glass-box rear extensions
- Rear extensions for terraced houses
Towns and districts in Lincolnshire
The main places we cover in Lincolnshire include Lincoln, Grimsby and Scunthorpe, across postcode areas DN, LN, NG and PE.
| Town | Postcode districts | Nearest town we also cover |
|---|---|---|
| Lincoln | LN6 | Gainsborough (14.4 miles) |
| Grimsby | DN31, DN32, DN34 | Cleethorpes (1.8 miles) |
| Scunthorpe | DN15, DN16, DN17 | Brough (10.9 miles) |
| Boston | PE21 | Spalding (14.1 miles) |
| Grantham | NG31 | Sleaford (11.4 miles) |
| Cleethorpes | DN35 | Grimsby (1.8 miles) |
| Spalding | PE11 | Bourne (9.8 miles) |
| Skegness | PE25 | Mablethorpe (14.0 miles) |
| Stamford | PE9 | Market Deeping (7.2 miles) |
| Gainsborough | DN21 | Retford (8.4 miles) |
- Lincoln
- Grimsby
- Scunthorpe
- Boston
- Grantham
- Cleethorpes
- Spalding
- Skegness
- Stamford
- Gainsborough
- Louth
- Sleaford
- Bourne
- Market Deeping
- Mablethorpe
- Barton upon Humber
- Immingham
Areas near Lincolnshire
FAQ
Questions people ask
How much does a rear extension cost in Lincolnshire?
As a guide, £1,840–£3,010 per square metre including VAT for a standard single-storey extension at East Midlands rates.
Do I need planning permission in Lincolnshire?
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.
Which towns in Lincolnshire do you cover?
17 towns and districts, including Lincoln, Grimsby and Scunthorpe.
Do you handle building control?
Yes. We apply to the council or a registered building control approver and hand over the completion certificate.