Edwardian + 1930s commuter town. Planning authority: Three Rivers District Council.
We prepare architectural drawings across Rickmansworth and the surrounding area — Rickmansworth, Mill End, Loudwater and the Croxley Green border and the streets between them. The stock here is largely Edwardian Metro-land villas, 1930s semis and substantial detached houses on the wooded valley slopes, and we draw for every one of those types for submission to Three Rivers District Council.
Three Rivers is predominantly Green Belt and parts of the parish sit within the Chilterns National Landscape (AONB) setting, so rural and valley-edge schemes face landscape tests, while the Rickmansworth conservation area governs the older town streets. Whichever route your address falls under, we confirm it free at the measured survey and design to match the local Hertfordshire streetscape — from period rear and side-return extensions to rear-dormer and mansard loft conversions.


Full planning submission — existing and proposed plans, elevations, site plan and Design & Access Statement.
Construction-detail drawings for your builder and Building Control sign-off.
Rear-dormer, hip-to-gable, L-shape and mansard loft-conversion drawings.
Single-storey, double-storey, wrap-around and side-return extension drawings.
Full mansard conversion drawings with structural and thermal detailing.
Every householder application in Rickmansworth is decided by Three Rivers District Council, with a statutory 8-week determination. Allow around 12–14 weeks from first call to decision once the measured survey, design and validation are included. We research the council's Local Plan and recent decisions before drawing, and we hold a 98% first-time approval rate across our work.

Direct answers to what homeowners in Rickmansworth ask about drawings, permission and fees.
Yes. Rickmansworth (WD3, Hertfordshire) is well within our 50-mile service radius from our central London office — about 18 miles out, 30 min via Metropolitan line. Every project includes an in-person measured survey at your property, so you are never charged mileage. We submit to Three Rivers District Council through the Planning Portal.
Around Rickmansworth, Mill End, Loudwater and the Croxley Green border, the stock is largely Edwardian Metro-land villas, 1930s semis and substantial detached houses on the wooded valley slopes. We prepare planning and building-regulations drawings for every period represented, designed to match the local streetscape and satisfy Three Rivers District Council.
It depends on your exact address. Many single-storey rear and side-return extensions on unlisted houses fall under Permitted Development, but Three Rivers is predominantly Green Belt and parts of the parish sit within the Chilterns National Landscape (AONB) setting, so rural and valley-edge schemes face landscape tests, while the Rickmansworth conservation area governs the older town streets. Listed buildings, flats and conservation-area properties always need full planning, decided by Three Rivers District Council. We confirm exactly which route applies to your home, free, at the survey.
Three Rivers District Council determines householder applications in 8 weeks; allow around 12–14 weeks end to end once the survey, design and validation are included. We hold a 98% first-time approval rate.
Pick a slot that suits you. No obligation and no sales pressure, just straight answers on your planning route.

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