Walthamstow — covered by Waltham Forest 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.


E17 primarily covers Walthamstow in Waltham Forest.
Decisions for E17 are made by Waltham Forest 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 Waltham Forest: Yes.
Building regs from £950. We do not charge hourly. Free site survey across all E17 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. Waltham Forest Council timelines align with the national norm.
Walthamstow in E17 is characterised by the housing stock of Waltham Forest — broadly victorian terraces across walthamstow, leyton and leytonstone.

Pick a slot that suits you. No obligation and no sales pressure, just straight answers on your planning route.
Every E17 postcode district we draw in, the stock that dominates it and the authority that validates a drawing package there. E17 fees below are the statutory England rates for 2026, not drawing package estimates.
| Postcode | Area | Dominant stock | What it means for a drawing package |
|---|---|---|---|
| E17 | Walthamstow | Victorian terraces | E17 covers Walthamstow only; Waltham Forest Council handles the drawing package. |
| E4 | Chingford / Highams Park | 1930s semi-detached, Edwardian villas | Adjoining district to E17, also inside Waltham Forest for drawing package purposes. |
| E10 | Leyton | Victorian terraces | Adjoining district to E17, also inside Waltham Forest for drawing package purposes. |
| E11 | Leytonstone / Wanstead / Snaresbrook | Victorian terraces, Edwardian villas | Adjoining district to E17, also inside Waltham Forest for drawing package purposes. |
Roof pitch, wall build-up and plot depth change every few E17 streets, and each one changes what a drawing package can achieve at that address.
Conservation areas covering E17 (Walthamstow): Waltham Forest Council runs 17, and Highams Park, Walthamstow Village, Lloyd Park are the ones E17 (Walthamstow) owners meet most. A drawing package inside a E17 (Walthamstow) conservation area loses permitted development, so the E17 (Walthamstow) submission is a householder application at £548 decided in 8 weeks — not a £249 prior approval decided in 6 weeks. In Walthamstow Village a drawing package is judged on the street elevation first.
Article 4 and your E17 (Walthamstow) drawing package: Article 4 for HMO conversions in key residential streets. At a E17 address that matters twice over, because Waltham Forest Council applies the direction unevenly across E17 (Walthamstow) — we read the E17 (Walthamstow) policies map for the exact E17 address before quoting architectural drawings.
The building fabric around E17 (Walthamstow): Victorian terraces across Walthamstow, Leyton and Leytonstone; 1930s semi-detached in Chingford and Highams Park; post-war flats around Walthamstow Central. Walthamstow Village is a designated conservation area with tight design controls; rest of borough is generally permissive with active side-return extension approvals. A drawing package in E17 (Walthamstow) 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 Waltham Forest Council.
Sources for this E17 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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