Extension cost in Telford (2026): local prices by postcode
Quick answerA 20m² single storey rear extension in Telford typically costs £50,000 to £57,500 including VAT. Telford is one of the more affordable parts of our core data area. Shifnal and Newport price higher than central Telford, and old mine workings can add groundwork costs on some plots.
Typical prices in Telford
Telford centre TF3, West Midlandsindex 0.93- Single storey rear extension20 m² (5m × 4m)£50,000 to £57,500£2,670/m²
- Kitchen extension with bifolds24 m² (6m × 4m), mid spec£67,000 to £77,000£2,980/m²
- Double storey rear extension40 m² over two floors£81,000 to £93,000£2,150/m²
- Dormer loft conversion2 bedrooms + en-suite£45,000 to £53,000
- Velux loft conversion2 rooms£32,500 to £38,000
- Garage conversion15 m² single garage£18,500 to £21,250£1,310/m²
All prices include 20% VAT, professional fees and statutory planning fees. Kitchen extension includes a mid-range kitchen, bifolds and a roof lantern.
Price my exact projectBuilding in Telford
Telford is a new town built from the 1960s around older settlements such as Wellington, Oakengates, Dawley and Madeley. That gives a mix of new town estates, modern housing from the 1990s onwards and older terraces in the original towns. Garage conversions, single storey rear extensions and loft conversions are the common projects. Shifnal and Newport, just outside the new town, have older market town housing and are covered by Shropshire Council and Telford & Wrekin respectively.
What moves the price in Telford
Mining legacy
Telford sits on the East Shropshire coalfield, and much of the area has old shallow mine workings. A coal mining report is important here, and an engineer may need extra ground investigation or a stronger foundation design before you build.
Modern estates
Many Telford homes are modern and built to standard designs, which keeps extensions straightforward. Some estates have planning conditions that remove permitted development rights, so check the planning history of your house.
Ironbridge Gorge
Around Ironbridge and Jackfield, the Gorge is a World Heritage Site with steep, unstable slopes in places. Extensions there need careful design and specialist ground advice, which adds cost.
Planning in Telford
Planning and building control here are handled by Telford & Wrekin Council. Many single storey rear extensions and loft conversions in England fall under permitted development, but conservation areas and Article 4 directions remove some of those rights, so check with the council before you commit to drawings.
Prices by postcode district in Telford
A 20m² single storey rear extension and a two-bedroom dormer loft with an en-suite, priced for each district. All figures include VAT and fees.
| Postcode | Area | Single storey, 20m² | Dormer loft | Index |
|---|---|---|---|---|
| TF1 | Wellington | £51,000 to £58,500 | £45,500 to £53,500 | 0.94 |
| TF2 | Oakengates | £50,000 to £57,500 | £45,000 to £53,000 | 0.93 |
| TF3 | Telford centre | £50,000 to £57,500 | £45,000 to £53,000 | 0.93 |
| TF7 | Madeley | £50,000 to £57,500 | £45,000 to £53,000 | 0.93 |
| TF10 | Newport (Shropshire) | £53,000 to £60,500 | £47,500 to £55,500 | 0.98 |
| TF11 | Shifnal | £53,500 to £61,500 | £48,000 to £56,000 | 0.99 |
Telford: common questions
How much does an extension cost in Telford?
A 20m² single storey rear extension in Telford typically costs £50,000 to £57,500 including VAT, around £2,670 per square metre. A 15m² garage conversion is usually around £18,500 to £21,250.
Do I need a mining report to extend in Telford?
It is strongly advisable. Much of Telford is in a coal mining reporting area, and the Coal Authority can tell you about known workings near your home. Your engineer will use this to design the foundations.
Do I need planning permission in Telford?
Many single storey rear extensions are permitted development, but some estates have conditions removing those rights and the Ironbridge area has tighter controls. Telford & Wrekin Council can confirm, or Shropshire Council for Shifnal.
How much is a loft conversion in Telford?
A dormer loft conversion with two bedrooms and an en-suite typically costs £45,000 to £53,000 including VAT. Modern homes with shallow roof pitches may suit a dormer better than a Velux conversion.