Two-storey extensions in Broxbourne
From over-garage bedrooms to full wraparounds, we cover every kind of two-storey extension in Broxbourne.
Broxbourne at a glance
- Postcode districts
- EN10
- Area
- Hertfordshire, England
- Price region
- East of England
- Nearest towns
- Hoddesdon (1 mile), Cheshunt (3.3 miles), Waltham Abbey (4.2 miles), Hertford (4.2 miles)
- Distance to Watford
- about 17.3 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 Broxbourne (EN10) and the places around it, including Hoddesdon (1.0 miles), Cheshunt (3.3 miles) and Waltham Abbey.
Extensions available in Broxbourne
Two-storey rear extensions
Our East of England guide starts at £57,500 for this type.
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Two-storey side extensions
Our East of England guide starts at £88,500 for this type.
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Two-storey wraparound extensions
Design, approvals and build for Broxbourne homes. Guide from £124,000.
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Part single, part two-storey extensions
For homes in Broxbourne: typical guide from £74,000.
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Extensions over a garage
Our East of England guide starts at £32,500 for this type.
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First-floor extensions
For homes in Broxbourne: typical guide from £26,000.
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Two-storey extensions for semi-detached houses
Design, approvals and build for Broxbourne homes. Guide from £57,500.
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Two-storey extensions for detached houses
Guide from £88,500 in Broxbourne, including VAT.
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Kitchen extensions with bedrooms above
For homes in Broxbourne: typical guide from £57,500 (before kitchen units).
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Extra bedroom and en-suite extensions
Our East of England guide starts at £57,500 (plus en-suite) for this type.
Learn moreWhich type suits your house?
Which type suits your house in Broxbourne 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 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 Broxbourne
Broxbourne 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 Broxbourne
Do you cover Broxbourne?
Yes. We cover Broxbourne (EN10) and the surrounding area, including Hoddesdon and Cheshunt. The first site visit is free.
What does a two-storey extension cost in Broxbourne?
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 Broxbourne do you cover?
Everywhere around it, including Hoddesdon (1 mile), Cheshunt (3.3 miles) and Waltham Abbey (4.2 miles), and the rest of Hertfordshire.