House extensions in Lincoln
From a small utility to a two-storey addition, we take on house extensions throughout Lincoln, starting with a free visit and a planning check.
- Postcode districtsLN1, LN2, LN5, LN6
- Price regionEast Midlands (×0.95)
- Planning rulesEngland
- Site visitFree, no obligation

Planning rules in Lincoln
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 England a single-storey side extension can be permitted development if it is no more than 4 m high and no wider than half the width of the original house. Two-storey side extensions, and any side extension on designated land such as a conservation area, need a householder planning application.
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 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).
Covering Lincoln and nearby
Postcode districts we cover around Lincoln include LN1, LN2, LN5, LN6. Neighbouring towns we cover include Gainsborough (14 miles), Grantham (22 miles), Scunthorpe (25 miles), Boston (27 miles), Grimsby (30 miles). For homes towards Nottinghamshire, Newark-on-Trent is around 16 miles away.
What works best for Lincoln houses?
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.
For many houses here, single-storey rear extensions, double-storey extensions or side extensions gives the most useful space for the budget.
What extensions cost in Lincoln
We publish guide prices so you can budget before anyone visits. For Lincoln they are adjusted by ×0.95, the factor we use across East Midlands.
| Extension type | Example size | Standard spec (inc VAT) |
|---|---|---|
| Orangery extensions | 16 m² | £42,500 – £53,500 |
| Extensions over a garage | 12 m² | £23,500 – £31,000 |
| Conservatory replacement extensions | 14 m² | £28,500 – £37,000 |
| Kitchen extensions | 20 m² | £39,500 – £50,500 |
| Wraparound extensions | 25 m² | £54,500 – £69,000 |
| Side return extensions | 11 m² | £25,000 – £31,500 |
Choose an extension type
- Orangery extensions · from £28,500
- Home office extensions · from £15,000
- Flat roof extensions · from £19,500
- Side return extensions · from £17,000
- Wraparound extensions · from £34,000
- Glass box extensions · from £28,500
- Extension plans and drawings · from £1,100
- Porch extensions · from £3,800
- Bedroom extensions · from £24,500
- Side extensions · from £20,500
- Building regulations for extensions · from £850
- Kitchen extensions · from £25,500
- Conservatory replacement extensions · from £19,000
- Bungalow extensions · from £24,500
- Double-storey extensions · from £36,000
- Annexe extensions · from £52,000
- Utility and boot room extensions · from £13,000
- Planning permission for extensions · from £300
- Pitched roof extensions · from £21,000
- Extensions over a garage · from £22,500
- Single-storey rear extensions · from £19,500
- Timber frame extensions · from £19,500
Free site visit
It starts with a visit to your house to measure, check access and talk through ideas and budget.
Design and approvals
Once the layout is agreed, we deal with the council: planning permission or written confirmation that none is needed, plus building control.
Fixed written price
We confirm the build price in writing, based on the approved drawings and the finishes you have chosen.
Build and sign-off
Work is carried out to the agreed programme, inspected by building control and signed off at the end.
Questions about extensions in Lincoln
How much does an extension cost in Lincoln?
Using our East Midlands factor (×0.95), a standard-spec single-storey extension of 20 m² is a guide £38,500 to £49,500 including VAT, and a 32 m² two-storey extension £54,500 to £71,500. Your written price follows the survey.
Who do I contract with?
Your contract is with S&K Property Investments and Improvement Ltd, which designs and manages the project and the build teams who carry it out.
Will my neighbours need to be told?
If you apply for planning or prior approval the council notifies them, and in England party wall notices may be needed for work near a shared boundary.
Do you handle building regulations?
Yes. We prepare the drawings and calculations, submit them and book inspections, ending with a completion certificate.
Book a free site visit in Lincoln
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.