House Extension Drawings in Havering

Where in Havering does a house extension actually get determined?

Every Havering postcode district we draw in, the stock that dominates it and the authority that validates a house extension there. Havering fees below are the statutory England rates for 2026, not house extension estimates.

Which Havering neighbourhoods suit a house extension best?

Roof pitch, wall build-up and plot depth change every few Havering streets, and each one changes what a house extension can achieve at that address.

• Romford (RM1, RM2, RM7) — house extension work in Romford means victorian terraces, 1930s semi-detached, post-war flats. Romford is Victorian and post-war centre. The side-return infill is the classic move on these Victorian terraces — 3 m of permitted development depth plus the width of the original side passage throughout RM1. Havering Council decides the Romford application, and Romford Market anchors the Romford location plan.
• Hornchurch (RM11, RM12) — a house extension in Hornchurch starts from 1930s semi-detached, and Hornchurch reads as 1930s semi-detached. 1930s semis here have the deepest rear gardens in the area in RM11. Havering Council assesses Hornchurch house extensions against its own Hornchurch character guidance, and the location plan we draw for Hornchurch references Hornchurch Tube.
• Upminster (RM14) — house extension work in Upminster means 1930s semi-detached, edwardian villas. Upminster is 1930s semi-detached, Edwardian villas. Edwardian plots here are wider throughout RM14. Havering Council decides the Upminster application, and Upminster station anchors the Upminster location plan.
• Rainham (RM13) — a house extension in Rainham starts from 1930s semi-detached, and Rainham reads as 1930s semi-detached, village fragments. 1930s semis here have the deepest rear gardens in the area in RM13. Havering Council assesses Rainham house extensions against its own Rainham character guidance, and the location plan we draw for Rainham references Rainham Village.
• Harold Hill (RM3) — a house extension in Harold Hill starts from post-war estate, and Harold Hill reads as post-war estate. Post-war houses on these estates often sit under an estate management scheme in RM3. Havering Council assesses Harold Hill house extensions against its own Harold Hill character guidance, and the location plan we draw for Harold Hill references Harold Hill.
• Collier Row (RM5) — house extension work in Collier Row means 1930s semi-detached. Collier Row is 1930s semi-detached, post-war. 1930s semis here have the deepest rear gardens in the area throughout RM5. Havering Council decides the Collier Row application, and Collier Row Road anchors the Collier Row location plan.
• Elm Park (RM12) — 1930s semi-detached defines Elm Park, where 1930s semi-detached set what a house extension can do. 1930s semis here have the deepest rear gardens in the area across RM12. Any Elm Park house extension is validated by Havering Council, with Elm Park Tube the usual Elm Park reference point on the site plan.

What local planning policy applies to a house extension in Havering?

Conservation areas covering Havering: Havering Council runs 15, and Hornchurch, Rainham Village, Romford Market are the ones Havering owners meet most. A house extension inside a Havering conservation area loses permitted development, so the Havering submission is a householder application at £548 decided in 8 weeks — not a £249 prior approval decided in 6 weeks. In Rainham Village a house extension is judged on the street elevation first.

Havering permitted development status: there is no borough-wide direction from Havering Council, so a house extension at a RM1 address is normally still permitted development. We certify that with a £274 Lawful Development Certificate rather than leaving a Havering sale to argue it later.

The building fabric around Havering: 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 house extension in Havering 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.

Who decides a house extension on the edge of Havering?

• Barking and Dagenham — cross the Havering boundary and Barking and Dagenham Council takes the house extension instead, applying 9 conservation areas of its own around IG11. We re-price house extensions at the Havering edge because Barking and Dagenham policy and Havering policy rarely align on house extension depth.
• Redbridge — cross the Havering boundary and Redbridge Council takes the house extension instead, applying 14 conservation areas of its own around E11. We re-price house extensions at the Havering edge because Redbridge policy and Havering policy rarely align on house extension depth.

Sources for this Havering house extension 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.