Two-storey extensions in Bushey
Planning a bigger home in Bushey? Compare extension types and guide prices below, then book a free site visit.
Bushey at a glance
- Postcode districts
- WD19 and WD23
- Area
- Hertfordshire, England
- Price region
- East of England
- Nearest towns
- Watford (1.7 miles), Harrow Weald (2.5 miles), Hatch End (2.5 miles), West Watford (2.6 miles)
- Distance to Watford
- about 1.7 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 districts WD19 and WD23 in and around Bushey, along with neighbouring Watford, Harrow Weald and Hatch End.
Extensions available in Bushey
Two-storey rear extensions
From £57,500 in Bushey. Free visit to firm it up.
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Two-storey side extensions
From £88,500 in Bushey. Free visit to firm it up.
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Two-storey wraparound extensions
For homes in Bushey: typical guide from £124,000.
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Part single, part two-storey extensions
For homes in Bushey: typical guide from £74,000.
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Extensions over a garage
Design, approvals and build for Bushey homes. Guide from £32,500.
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First-floor extensions
Design, approvals and build for Bushey homes. Guide from £26,000.
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Two-storey extensions for semi-detached houses
For homes in Bushey: typical guide from £57,500.
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Two-storey extensions for detached houses
From £88,500 in Bushey. Free visit to firm it up.
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Kitchen extensions with bedrooms above
Bushey guide price from £57,500 (before kitchen units), Standard spec.
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Extra bedroom and en-suite extensions
From £57,500 (plus en-suite) in Bushey. Free visit to firm it up.
Learn moreWhich type suits your house?
The boundaries usually decide it. Two-storey work close to a neighbour needs careful design for light and privacy, so at the visit in Bushey we measure distances to every boundary before suggesting a type.
Also available in Hertfordshire
- 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 Bushey
Bushey 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 Bushey
Do you cover Bushey?
Yes. We cover Bushey (WD19 and WD23) and the surrounding area, including Watford and Harrow Weald. The first site visit is free.
What does a two-storey extension cost in Bushey?
Using our East of 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 £57,500–£78,000 including VAT. An extension over a garage is about £32,500–£47,500.
Which other places near Bushey do you cover?
Everywhere around it, including Watford (1.7 miles), Harrow Weald (2.5 miles) and Hatch End (2.5 miles), and the rest of Hertfordshire.