Hornchurch / Emerson Park — covered by Havering 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.


RM11 primarily covers Hornchurch / Emerson Park in Havering.
Decisions for RM11 are made by Havering 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 Havering: No.
Building regs from £950. We do not charge hourly. Free site survey across all RM11 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. Havering Council timelines align with the national norm.
Hornchurch / Emerson Park in RM11 is characterised by the housing stock of Havering — broadly 1930s semi-detached dominates hornchurch and upminster.

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Every RM11 postcode district we draw in, the stock that dominates it and the authority that validates a drawing package there. RM11 fees below are the statutory England rates for 2026, not drawing package estimates.
| Postcode | Area | Dominant stock | What it means for a drawing package |
|---|---|---|---|
| RM11 | Hornchurch / Emerson Park | 1930s semi-detached | RM11 covers Hornchurch / Emerson Park only; Havering Council handles the drawing package. |
| RM11 | Hornchurch | 1930s semi-detached | Hornchurch sits inside RM11; drawing package proposals here are determined by Havering Council. |
| RM1 | Romford Central | Victorian terraces, 1930s semi-detached, post-war flats | Adjoining district to RM11, also inside Havering for drawing package purposes. |
| RM2 | Gidea Park | Victorian terraces, 1930s semi-detached, post-war flats | Adjoining district to RM11, also inside Havering for drawing package purposes. |
| RM3 | Harold Hill | Post-war estate | Adjoining district to RM11, also inside Havering for drawing package purposes. |
| RM4 | Havering-atte-Bower | mixed stock | Adjoining district to RM11, also inside Havering for drawing package purposes. |
Roof pitch, wall build-up and plot depth change every few RM11 streets, and each one changes what a drawing package can achieve at that address.
Conservation areas covering RM11 (Hornchurch / Emerson Park): Havering Council runs 15, and Rainham Village, Romford Market, Upminster are the ones RM11 (Hornchurch / Emerson Park) owners meet most. A drawing package inside a RM11 (Hornchurch / Emerson Park) conservation area loses permitted development, so the RM11 (Hornchurch / Emerson Park) submission is a householder application at £548 decided in 8 weeks — not a £249 prior approval decided in 6 weeks. In Hornchurch a drawing package is judged on the street elevation first.
Article 4 and your RM11 (Hornchurch / Emerson Park) drawing package: Havering Council has made no borough-wide direction, so permitted development for a drawing package in RM11 (Hornchurch / Emerson Park) generally survives outside RM11 (Hornchurch / Emerson Park) conservation areas and listed curtilages. A Lawful Development Certificate at £274 is how a RM11 owner records that a drawing package was lawful.
The building fabric around RM11 (Hornchurch / Emerson Park): 1930s semi-detached dominates Hornchurch and Upminster; post-war in Harold Hill and Romford; Victorian in older Romford centre. Outer east London; Metropolitan Green Belt covers north of the borough; permissive residential planning; strong PD use. A drawing package in RM11 (Hornchurch / Emerson Park) 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 Havering Council.
Sources for this RM11 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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