Extension cost in Dudley (2026): local prices by postcode
Quick answerA 20m² single storey rear extension in Dudley typically costs £53,000 to £60,500 including VAT. Dudley is in the heart of the area our cost data comes from, so these ranges are some of our tightest. Sedgley and Kingswinford usually price a little higher than Netherton and Tipton.
Typical prices in Dudley
Dudley town DY1, West Midlandsindex 0.98- Single storey rear extension20 m² (5m × 4m)£53,000 to £60,500£2,810/m²
- Kitchen extension with bifolds24 m² (6m × 4m), mid spec£70,500 to £81,000£3,120/m²
- Double storey rear extension40 m² over two floors£85,000 to £97,500£2,260/m²
- Dormer loft conversion2 bedrooms + en-suite£47,500 to £55,500
- Velux loft conversion2 rooms£34,000 to £40,000
- Garage conversion15 m² single garage£19,500 to £22,500£1,380/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 Dudley
Dudley borough covers the old town around the castle, Netherton, Sedgley, Tipton, Brierley Hill and Kingswinford. The housing is a mix of Victorian and Edwardian terraces near the town centres, large numbers of 1930s semis, and post-war council-built estates, many now privately owned. Single storey rear extensions, kitchen extensions and garage conversions are the most common projects, with hip to gable loft conversions popular on semis in Sedgley and Kingswinford. Our cost data comes from completed jobs in and around the borough.
What moves the price in Dudley
Old mine workings
The Black Country has a long history of coal and limestone mining, and parts of Dudley sit over old workings. A ground report or coal mining search before you finalise the design is sensible, because deeper or reinforced foundations can change the groundwork cost.
Sloping plots
Dudley sits on high ground, and many streets around the town, Netherton and Sedgley are on a slope. Rear gardens that fall away from the house can need stepped foundations, retaining walls or a raised floor, which adds to an otherwise standard extension.
Estate semis
Post-war semis across the borough often have side driveways and simple layouts that suit side extensions and garage conversions. These are some of the most predictable jobs to price, which helps keep our ranges here tight.
Planning in Dudley
Planning and building control here are handled by Dudley Metropolitan Borough 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 Dudley
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 |
|---|---|---|---|---|
| DY1 | Dudley town | £53,000 to £60,500 | £47,500 to £55,500 | 0.98 |
| DY2 | Netherton | £52,000 to £59,500 | £46,500 to £54,500 | 0.96 |
| DY3 | Sedgley | £54,000 to £62,000 | £48,500 to £56,500 | 1.00 |
| DY4 | Tipton | £51,000 to £59,000 | £46,000 to £54,000 | 0.95 |
| DY5 | Brierley Hill | £52,500 to £60,000 | £47,000 to £55,000 | 0.97 |
| DY6 | Kingswinford | £54,500 to £62,500 | £49,000 to £57,500 | 1.01 |
Dudley: common questions
How much does a single storey extension cost in Dudley?
A 20m² single storey rear extension in Dudley typically costs £53,000 to £60,500 including VAT, around £2,810 per square metre. A mid-spec 24m² kitchen extension with bifolds and a lantern is around £70,500 to £81,000.
Do I need planning permission for an extension in Dudley?
Often not for a modest rear extension. In England, single storey rear extensions up to 3m deep on a semi or terrace, or 4m on a detached house, can usually be built as permitted development. Conservation areas around the town centre have tighter rules, so check with Dudley Metropolitan Borough Council first.
How much is a loft conversion in Dudley?
A dormer loft conversion with two bedrooms and an en-suite typically costs £47,500 to £55,500 including VAT in Dudley. Hip to gable conversions on 1930s semis cost a little more because the end of the roof is rebuilt as a gable wall.
How long does an extension take in Dudley?
Allow four to eight weeks for drawings and approvals, then around 10 to 14 weeks on site for a typical single storey rear extension. End to end, five to six months is a realistic plan.