Two-storey extensions in Batchworth
Homeowners in Batchworth can use us for the whole project or just the drawings and approvals. Start with a free visit.
Batchworth at a glance
- Postcode districts
- WD3
- Area
- Hertfordshire, England
- Price region
- East of England
- Nearest towns
- Croxley Green (0.6 miles), Rickmansworth (0.7 miles), Holywell (Hertfordshire) (1.9 miles), Northwood (2.3 miles)
- Distance to Watford
- about 3.3 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 postcode district WD3 in and around Batchworth, along with neighbouring Croxley Green, Rickmansworth and Holywell (Hertfordshire).
Extensions available in Batchworth

Two-storey rear extensions
From £57,500 in Batchworth. Free visit to firm it up.
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Two-storey side extensions
Design, approvals and build for Batchworth homes. Guide from £88,500.
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Two-storey wraparound extensions
For homes in Batchworth: typical guide from £124,000.
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Part single, part two-storey extensions
Batchworth guide price from £74,000, Standard spec.
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Extensions over a garage
For homes in Batchworth: typical guide from £32,500.
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First-floor extensions
Batchworth guide price from £26,000, Standard spec.
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Two-storey extensions for semi-detached houses
From £57,500 in Batchworth. Free visit to firm it up.
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Two-storey extensions for detached houses
Batchworth guide price from £88,500, Standard spec.
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Kitchen extensions with bedrooms above
From £57,500 (before kitchen units) in Batchworth. Free visit to firm it up.
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Extra bedroom and en-suite extensions
Batchworth guide price from £57,500 (plus en-suite), Standard spec.
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 Batchworth, with a rough idea of the approval route and cost for each.
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 Batchworth
Batchworth 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 Batchworth
Do you cover Batchworth?
Yes. We cover Batchworth (WD3) and the surrounding area, including Croxley Green and Rickmansworth. The first site visit is free.
What does a two-storey extension cost in Batchworth?
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 Batchworth do you cover?
Everywhere around it, including Croxley Green (0.6 miles), Rickmansworth (0.7 miles) and Holywell (Hertfordshire) (1.9 miles), and the rest of Hertfordshire.