Mortlake / East Sheen — covered by Richmond Council.
Planning permission drawings delivered by an MCIAT chartered team.
Building regulations drawings delivered by an MCIAT chartered team.
Loft conversion drawings delivered by an MCIAT chartered team.
House extension drawings delivered by an MCIAT chartered team.
Mansard roof extensions delivered by an MCIAT chartered team.
Garage conversion drawings delivered by an MCIAT chartered team.
Basement conversion drawings delivered by an MCIAT chartered team.
Structural calculations delivered by an MCIAT chartered team.
Measured building survey delivered by an MCIAT chartered team.
Party wall services delivered by an MCIAT chartered team.
Rear dormer drawings delivered by an MCIAT chartered team.


SW14 primarily covers Mortlake / East Sheen in Richmond upon Thames.
Decisions for SW14 are made by Richmond Council. Standard Permitted Development rules apply for most rear extensions and loft conversions on terraced and semi-detached houses, unless the property is in a conservation area, is listed, or sits under an Article 4 Direction. Article 4 in Richmond upon Thames: No.
Building regs from £950. We do not charge hourly. Free site survey across all SW14 addresses.
From first call to planning decision: typically 12–14 weeks. Site survey week 1, design weeks 2–3, validation 1–2 weeks, statutory 8-week determination. Richmond Council timelines align with the national norm.
Mortlake / East Sheen in SW14 is characterised by the housing stock of Richmond upon Thames — broadly georgian in richmond green and twickenham.

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Every SW14 postcode district we draw in, the stock that dominates it and the authority that validates a drawing package there. SW14 fees below are the statutory England rates for 2026, not drawing package estimates.
| Postcode | Area | Dominant stock | What it means for a drawing package |
|---|---|---|---|
| SW14 | Mortlake / East Sheen | Edwardian villas, 1930s semi-detached | Mortlake / East Sheen sits wholly inside SW14, so Richmond Council validates every drawing package submitted from an SW14 address. |
| SW14 | East Sheen | Edwardian villas, 1930s semi-detached | East Sheen sits inside SW14; drawing package proposals here are determined by Richmond Council. |
| SW14 | Mortlake | Victorian and Edwardian terraces | Mortlake sits inside SW14; drawing package proposals here are determined by Richmond Council. |
| SW13 | Barnes | Georgian villas, Edwardian terraces | Adjoining district to SW14, also inside Richmond upon Thames for drawing package purposes. |
| TW1 | Twickenham | Georgian fragments, Victorian terraces, Edwardian villas | Adjoining district to SW14, also inside Richmond upon Thames for drawing package purposes. |
| TW2 | Twickenham / Whitton | Georgian fragments, Victorian terraces, Edwardian villas | Adjoining district to SW14, also inside Richmond upon Thames for drawing package purposes. |
Roof pitch, wall build-up and plot depth change every few SW14 streets, and each one changes what a drawing package can achieve at that address.
SW14 (Mortlake / East Sheen) conservation designations: there are 72 across Richmond Council, Kew Green, Hampton Wick, Twickenham Riverside among them. Designation costs a SW14 (Mortlake / East Sheen) owner the permitted-development route: a drawing package then needs a £548 householder application over 8 weeks, in place of the £249 prior approval route that takes 6 weeks. Richmond Green is the SW14 (Mortlake / East Sheen) designation that most often changes a drawing package design.
No blanket Article 4 over SW14 (Mortlake / East Sheen): Richmond Council has not withdrawn permitted development across SW14 (Mortlake / East Sheen), so a drawing package outside a SW14 (Mortlake / East Sheen) conservation area usually keeps it. The £274 Lawful Development Certificate is still the document a SW14 owner wants on file.
The building fabric around SW14 (Mortlake / East Sheen): Georgian in Richmond Green and Twickenham; Edwardian villas in Barnes and East Sheen; 1930s semi-detached in Whitton; riverside cottages along the Thames. Highest conservation area coverage in London; Royal Parks and Thames corridor add heritage layers; design quality heavily scrutinised. A drawing package in SW14 (Mortlake / East Sheen) is scoped against that stock first, because it decides whether the scheme runs as permitted development, a £274 Lawful Development Certificate, or a full £548 application to Richmond Council.
Sources for this SW14 drawing package page: borough policies maps and conservation-area registers (2025–26), Royal Mail postcode district boundaries, the Town and Country Planning (Fees for Applications) (England) Regulations, the Town and Country Planning (General Permitted Development) (England) Order 2015 as amended, and the Party Wall etc. Act 1996.
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