Two-storey extensions in Rickmansworth
Need more room in Rickmansworth? Two-storey and first-floor extensions add bedrooms and living space without moving. Here's everything we offer locally.
Rickmansworth at a glance
- Postcode districts
- WD3
- Area
- Hertfordshire, England
- Price region
- East of England
- Nearest towns
- Batchworth (0.7 miles), Croxley Green (1.2 miles), Chorleywood (1.9 miles), Holywell (Hertfordshire) (2.3 miles)
- Distance to Watford
- about 3.7 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 district WD3 in and around Rickmansworth, along with neighbouring Batchworth, Croxley Green and Chorleywood.
Extensions available in Rickmansworth
Two-storey rear extensions
From £57,500 in Rickmansworth. Free visit to firm it up.
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Two-storey side extensions
Design, approvals and build for Rickmansworth homes. Guide from £88,500.
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Two-storey wraparound extensions
Design, approvals and build for Rickmansworth homes. Guide from £124,000.
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Part single, part two-storey extensions
Guide from £74,000 in Rickmansworth, including VAT.
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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
From £26,000 in Rickmansworth. Free visit to firm it up.
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Two-storey extensions for semi-detached houses
Rickmansworth guide price from £57,500, Standard spec.
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Two-storey extensions for detached houses
Design, approvals and build for Rickmansworth homes. Guide from £88,500.
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Kitchen extensions with bedrooms above
For homes in Rickmansworth: 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?
Start with what you need the space for. Bedrooms and an en-suite upstairs with a bigger kitchen below is the classic two-storey brief, but in Rickmansworth we also design annexes, home offices and bedrooms over garages.
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 Rickmansworth
Rickmansworth 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 Rickmansworth
Do you cover Rickmansworth?
Yes. We cover Rickmansworth (WD3) and the surrounding area, including Batchworth and Croxley Green. The first site visit is free.
What does a two-storey extension cost in Rickmansworth?
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 Rickmansworth do you cover?
Everywhere around it, including Batchworth (0.7 miles), Croxley Green (1.2 miles) and Chorleywood (1.9 miles), and the rest of Hertfordshire.