Two-storey extensions in Mexborough
We design, get approval for and build two-storey extensions in Mexborough and the surrounding area. Choose the type of extension below or book a free site visit.
Mexborough at a glance
- Postcode districts
- S64
- Area
- South Yorkshire, England
- Price region
- Yorkshire and the Humber
- Nearest towns
- Bolton-upon-Dearne (1.9 miles), Wath-upon-Dearne (2.3 miles), Conisbrough (2.6 miles), Rawmarsh (3.1 miles)
- Distance to Sheffield
- about 10.5 miles
- Approvals
- Two-storey rear: up to 3 m deep and 7 m from the rear boundary under permitted development. Side, wraparound and front: planning permission.
Around Mexborough we also work in Bolton-upon-Dearne, Wath-upon-Dearne and Conisbrough, and across the rest of South Yorkshire. Postcode district in and near Mexborough: S64.
Extensions available in Mexborough

Two-storey rear extensions
Guide from £51,500 in Mexborough, including VAT.
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Two-storey side extensions
From £79,000 in Mexborough. Free visit to firm it up.
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Two-storey wraparound extensions
Design, approvals and build for Mexborough homes. Guide from £111,000.
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Part single, part two-storey extensions
Our Yorkshire and the Humber guide starts at £66,000 for this type.
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Extensions over a garage
For homes in Mexborough: typical guide from £29,000.
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First-floor extensions
Design, approvals and build for Mexborough homes. Guide from £23,000.
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Two-storey extensions for semi-detached houses
For homes in Mexborough: typical guide from £51,500.
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Two-storey extensions for detached houses
Guide from £79,000 in Mexborough, including VAT.
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Kitchen extensions with bedrooms above
Design, approvals and build for Mexborough homes. Guide from £51,500 (before kitchen units).
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Extra bedroom and en-suite extensions
For homes in Mexborough: typical guide from £51,500 (plus en-suite).
Learn moreWhich type suits your house?
If you're not sure which type fits, that's what the free visit is for. We'll sketch the realistic options for your house in Mexborough, with a rough idea of the approval route and cost for each.
Also available in South Yorkshire
- Two-storey front extensions
- Two-storey extensions for end-of-terrace houses
- Two-storey annexe extensions
- Garage conversions with a room above
- Two-storey extension plans and drawings
- Planning permission for two-storey extensions
- Structural engineering for two-storey extensions
- Building regulations for two-storey extensions
- Party wall notices for extensions
- Design and build two-storey extensions
Rules for Mexborough
Mexborough is in England. Two-storey rear: up to 3 m deep and 7 m from the rear boundary under permitted development. Side, wraparound and front: planning permission. Householder planning application: £548 (or £575 for applications made from 8 December 2026). Lawful development certificate: £274 (about £288 for applications from 8 December 2026). Councils should decide householder applications within 8 weeks of validation.
The full England rules explained
Questions about extensions in Mexborough
Do you cover Mexborough?
Yes. We cover Mexborough (S64) and the surrounding area, including Bolton-upon-Dearne and Wath-upon-Dearne. The first site visit is free.
What does a two-storey extension cost in Mexborough?
Using our Yorkshire and the Humber guide, a two-storey rear extension with a 4 m × 3.5 m footprint on two floors (28 m² of new floor space) is about £51,500–£69,500 including VAT. An extension over a garage is about £29,000–£42,000.
Which other places near Mexborough do you cover?
Everywhere around it, including Bolton-upon-Dearne (1.9 miles), Wath-upon-Dearne (2.3 miles) and Conisbrough (2.6 miles), and the rest of South Yorkshire.