Extension cost per m² in Nottingham
Extension cost by size in Nottingham
Each row multiplies the current £1,800–£3,000 per m² national benchmark by floor area and then applies the same regional factor.
What can change a real Nottingham quote?
- Floor area and number of storeys
- London and regional labour rates
- Steelwork and structural changes
- Kitchen or bathroom installation
- Glazing and door specification
- Finish level, access and contingency
Local planning considerations
Use the regional model as an early budget only; property condition, access and contractor availability can have a larger effect than the regional multiplier.
- Existing property condition can move refurbishment costs more than the modest East Midlands model adjustment.
- Groundworks, drainage and level changes should be kept separate on extensions, driveways and landscaping projects.
- For older homes, allow surveys or opening-up work before treating an online estimate as a firm scope.
How the regional model works
The 0.97× factor places this planning estimate 3% below the national planning baseline. We keep that modelling assumption separate from the dated national benchmark so users can see which part comes from an external source and which part is UK Home Costs modelling.
Sources
House Extension: Cost Breakdown 2026
Published / checked: June 2026
Used for: Extension cost-per-m² benchmarks and common add-on costs
Construction output price indices
Published / checked: 13 August 2026
Used for: Construction price trend and update checks
Frequently asked questions
How much does a house extension cost in Nottingham in 2026?
Our modelled Nottingham planning rate is about £1,750–£2,900 / m², based on the current national £1,800–£3,000 per m² benchmark and the East Midlands regional factor. This is not an observed city-wide quote average.
How much is a 20m² extension in Nottingham?
Applying the same regional model gives about £34,900–£58,200 before VAT for a straight-line 20m² example. Structural work, glazing, kitchens, bathrooms and access can move a real quote outside that range.
Why is the Nottingham estimate different from the UK benchmark?
UK Home Costs applies a 0.97× East Midlands planning factor, placing the model 3% below the national planning baseline. It is our modelling assumption rather than an external city price index.
Does the extension figure include VAT and professional fees?
The national benchmark is stated before VAT. Do not assume architect, structural engineer, planning, building-control, party-wall or specialist survey fees are included unless a contractor quote says so.