Extending your home in Telford
Planning an extension in Telford? Compare extension types, see guide prices adjusted for Telford and book a free site visit.
- Postcode districtsTF1, TF2, TF3, TF4, TF7, TF8
- Price regionWest Midlands (×0.97)
- Planning rulesEngland
- Site visitFree, no obligation
Planning rules in Telford
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 two-storey rear extension is permitted development only if it projects no more than 3 m from the original rear wall, sits at least 7 m from the rear boundary, matches the roof pitch and uses obscure, non-opening side windows upstairs. Most two-storey extensions therefore go through a householder planning application, which costs £548 from 1 April 2026 and normally takes about 8 weeks.
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.
If the work involves a shared wall, building on the boundary, or digging foundations within 3 m (sometimes 6 m) of a neighbour's building, the Party Wall etc. Act 1996 applies and notice must be served before work starts: two months for work to a party wall, one month for new walls on the boundary and for excavations.
Applications are decided by the local planning authority (your district, borough or unitary council).
What works best for Telford houses?
The West Midlands has a large stock of 1930s and post-war semi-detached houses, which are well suited to rear, side and over-garage extensions, plus Victorian terraces in the older inner areas.
For many houses here, single-storey rear extensions, extensions over a garage or double-storey extensions gives the most useful space for the budget.
Popular extension prices in Telford
We publish guide prices so you can budget before anyone visits. For Telford they are adjusted by ×0.97, the factor we use across West Midlands.
| Extension type | Example size | Standard spec (inc VAT) |
|---|---|---|
| Conservatory replacement extensions | 14 m² | £29,000 – £37,500 |
| Kitchen extensions | 20 m² | £40,500 – £51,500 |
| Double-storey extensions | 32 m² | £55,500 – £73,000 |
| Side return extensions | 11 m² | £25,500 – £32,500 |
| Orangery extensions | 16 m² | £43,000 – £54,500 |
| Single-storey rear extensions | 20 m² | £39,500 – £50,500 |
| Extensions over a garage | 12 m² | £24,000 – £31,500 |
Telford and surrounding towns
Site visits are available across Telford (TF1, TF2, TF3, TF4, TF7, TF8). We also work in nearby Wellington (3 miles), Bridgnorth (11 miles), Shrewsbury (13 miles), Market Drayton (15 miles), Ludlow (24 miles). For homes towards West Midlands, Wolverhampton is around 15 miles away.
Choose an extension type
- Orangery extensions · from £29,000
- Side return extensions · from £17,000
- Pitched roof extensions · from £21,500
- Porch extensions · from £3,850
- Extensions over a garage · from £23,000
- Conservatory replacement extensions · from £19,000
- Flat roof extensions · from £20,000
- Bedroom extensions · from £25,000
- Timber frame extensions · from £20,000
- Utility and boot room extensions · from £13,500
- Double-storey extensions · from £36,500
- Glass box extensions · from £29,000
- Wraparound extensions · from £34,500
- Single-storey rear extensions · from £20,000
- Planning permission for extensions · from £300
- Annexe extensions · from £53,000
- Building regulations for extensions · from £850
- Kitchen extensions · from £26,000
- Extension plans and drawings · from £1,150
- Bungalow extensions · from £25,000
- Side extensions · from £21,000
- Home office extensions · from £15,500
Free site visit
A designer visits, takes measurements and photos, and discusses layouts, budget and timing with you.
Design and approvals
We produce the drawings and structural design, and manage the approvals so they are in place before work starts.
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
We build it with one project manager, book the building control inspections and hand over the completion certificate.
Questions about extensions in Telford
How much does an extension cost in Telford?
Using our West Midlands factor (×0.97), a standard-spec single-storey extension of 20 m² is a guide £39,500 to £50,500 including VAT, and a 32 m² two-storey extension £55,500 to £73,000. 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.
How long does an extension take in Telford?
Usually 2 to 4 months of design and approvals, then 10 to 16 weeks on site for a single-storey extension or 16 to 24 weeks for two storeys.
Do I need planning permission for an extension in Telford?
Not always. It depends on the size, position and your property's history. Many single-storey rear extensions in England are permitted development or can use prior approval.
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.
Book a free site visit in Telford
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.