Two-storey extensions in Haydock
Planning a bigger home in Haydock? Compare extension types and guide prices below, then book a free site visit.
Haydock at a glance
- Postcode districts
- WA11
- Area
- Merseyside, England
- Price region
- North West England
- Nearest towns
- Ashton-in-Makerfield (1.7 miles), St Helens (2.4 miles), Newton-le-Willows (3.6 miles), Golborne (3.6 miles)
- Distance to Liverpool
- about 12.8 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.
We cover postcode district WA11 in and around Haydock, along with neighbouring Ashton-in-Makerfield, St Helens and Newton-le-Willows.
Extensions available in Haydock
Two-storey rear extensions
Haydock guide price from £53,000, Standard spec.
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Two-storey side extensions
Haydock guide price from £82,000, Standard spec.
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Two-storey wraparound extensions
For homes in Haydock: typical guide from £114,500.
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Part single, part two-storey extensions
From £68,500 in Haydock. Free visit to firm it up.
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Extensions over a garage
For homes in Haydock: typical guide from £30,000.
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First-floor extensions
Design, approvals and build for Haydock homes. Guide from £24,000.
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Two-storey extensions for semi-detached houses
From £53,000 in Haydock. Free visit to firm it up.
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Two-storey extensions for detached houses
Design, approvals and build for Haydock homes. Guide from £82,000.
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Kitchen extensions with bedrooms above
Our North West England guide starts at £53,000 (before kitchen units) for this type.
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Extra bedroom and en-suite extensions
Haydock guide price from £53,000 (plus en-suite), Standard spec.
Learn moreWhich type suits your house?
Which type suits your house in Haydock depends mostly on where you have room. A deep garden points to a rear extension; space beside the house points to a side or over-garage extension; a house that already has a single-storey extension can often take a first floor on top.
Also available in Merseyside
- 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 Haydock
Haydock 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 Haydock
Do you cover Haydock?
Yes. We cover Haydock (WA11) and the surrounding area, including Ashton-in-Makerfield and St Helens. The first site visit is free.
What does a two-storey extension cost in Haydock?
Using our North West England 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 £53,000–£72,000 including VAT. An extension over a garage is about £30,000–£43,500.
Which other places near Haydock do you cover?
Everywhere around it, including Ashton-in-Makerfield (1.7 miles), St Helens (2.4 miles) and Newton-le-Willows (3.6 miles), and the rest of Merseyside.