The fast route to a deep single-storey rear extension in Redbridge — up to 6 metres on an attached house or 8 on a detached one — via Redbridge Council's prior approval scheme rather than a full planning application.
Redbridge Council granted 84% of the householder planning decisions it made in its latest published year — 3 points below the 87% England-wide householder average. Hip-to-gable and rear dormer schemes on paired semis are judged on roof bulk and the symmetry of the pair, which is where a policy-literate drawing pack earns its keep. Its dominant Edwardian (1901–1910), interwar (1918–1939) and postwar (1945–1970) housing stock sets the design brief on most streets.
Class A and Class B set the thresholds — a rear dormer to 40m³ on a terrace or 50m³ on a semi or detached, and a single-storey rear extension to 3m on a terrace or 4m on a detached house — beyond which Redbridge Council needs a full application. Redbridge carries at least one Article 4 direction, and conservation areas including Wanstead Village (George Green), Woodford Green and Cranbrook (Ilford) remove those rights outright, so we confirm your exact address before a line is drawn. A validated householder application in Redbridge is determined against an 8-week statutory target.
Wanstead (Edwardian and interwar homes around the George Green conservation area), Woodford Green (larger detached and semi-detached houses beside Epping Forest), Ilford (Edwardian terraces around the Cranbrook and Valentines conservation areas), Snaresbrook (period villas near the forest edge), Gants Hill (1930s Metroland semis on generous plots) and Barkingside (interwar and postwar suburban housing) — these are the Redbridge pockets our drawings cover most. Heritage designations here include Wanstead Village (George Green), Woodford Green, Cranbrook (Ilford), Valentines and Snaresbrook. Redbridge Council weighs each proposal against Redbridge Local Plan 2015–2030 and the borough's householder alterations and extensions guidance, where the borough's suburban character means front boundary treatments and street rhythm carry real weight. Converted flats are common through Ilford and around Gants Hill, and those units carry no householder permitted-development rights.. On roofs the borough is hipped roofs on the interwar semis and gabled roofs on the Edwardian and detached stock, over interwar semi-detached houses, Edwardian terraces around Ilford and detached houses in Woodford and Wanstead.
The ordinary Class A limits stop a single-storey rear extension at 3 metres on an attached house and 4 on a detached one. The larger home extension scheme doubles both, on condition that the council is told first. That notification is not an application for permission — the council cannot refuse on design, materials or policy grounds. It can only consider the effect on the amenity of adjoining premises, and only if a neighbour actually objects during the 21-day consultation.
The other conditions still apply and are strict: single storey only, no higher than 4 metres, eaves no higher than the existing eaves, and no more than half the land around the original house covered. It is not available on designated land, so a house in a conservation area such as Wanstead Village (George Green) and Woodford Green cannot use it at all. Materials must be similar to the existing house, and the extension must not include a veranda, balcony or raised platform.
Redbridge is largely interwar semi-detached houses, Edwardian terraces around Ilford and detached houses in Woodford and Wanstead. Hip-to-gable and rear dormer schemes on paired semis are judged on roof bulk and the symmetry of the pair, which matters here because an objecting neighbour puts amenity squarely in front of a case officer. Leafier conservation areas such as Wanstead and Woodford Green carry Article 4 controls, and with Epping Forest wrapping the borough's western edge those green settings weigh on what alterations are acceptable.
The scheme is available where all of these hold. Fail any one and it is a full application to Redbridge Council instead:
We prepare the notification pack Redbridge Council needs — plans, elevations, a site plan with the adjoining owners identified — and manage the 21-day neighbour consultation so the 42-day clock is not restarted by an incomplete submission.
Below is Redbridge Council's real householder decision record, drawn from official planning statistics and refreshed as new data lands. Redbridge grants a fair majority of householder applications, though the symmetry of its paired interwar semis is the recurring issue that decides many roof and side schemes. Prior approval turns on neighbour amenity alone, so the drawings that matter are the ones showing the relationship to the boundary.
Source: MHCLG planning application statistics (householder decisions, rolling year). Compare every borough on our London approval-rate league table.
Tell us about your project and get a fixed, no-obligation quote back within one working day. If you don't need planning permission at all, we'll tell you that too — for free.
Across Wanstead, Woodford Green and Ilford, the notifications that clear without objection are the ones that treat the neighbour as the audience. We show the extension in section against the boundary, demonstrate the 45-degree daylight relationship to the nearest habitable window, and where the plot is tight we taper the depth away from the boundary rather than running the full 6 metres to the fence.
The borough's suburban character means front boundary treatments and street rhythm carry real weight. Where an objection does arrive, the council's assessment is narrow: loss of light, outlook and overbearing effect on the adjoining property, nothing else. A pack that has already answered those three points on the drawings usually survives an objection, whereas one that leaves them to the officer's imagination usually does not.
We prepare prior-approval notifications across Redbridge. A few of the areas where deep rear extensions come up most often:
Prior approval drawings for Wanstead — Edwardian and interwar homes around the George Green conservation area — dimensioned to the 6m and 8m limits and prepared for Redbridge Council's neighbour consultation.
Prior approval drawings for Woodford Green — larger detached and semi-detached houses beside Epping Forest — dimensioned to the 6m and 8m limits and prepared for Redbridge Council's neighbour consultation.
Prior approval drawings for Ilford — Edwardian terraces around the Cranbrook and Valentines conservation areas — dimensioned to the 6m and 8m limits and prepared for Redbridge Council's neighbour consultation.
Prior approval drawings for Snaresbrook — period villas near the forest edge — dimensioned to the 6m and 8m limits and prepared for Redbridge Council's neighbour consultation.
Prior approval drawings for Gants Hill — 1930s Metroland semis on generous plots — dimensioned to the 6m and 8m limits and prepared for Redbridge Council's neighbour consultation.
Prior approval drawings for Barkingside — interwar and postwar suburban housing — dimensioned to the 6m and 8m limits and prepared for Redbridge Council's neighbour consultation.
Same extension, two routes, very different tests.
| Route | Depth allowed | What the council may consider | Timescale |
|---|---|---|---|
| Ordinary Class A permitted development | 3m attached / 4m detached | Nothing — no application needed | Immediate |
| Larger home extension prior approval | 6m attached / 8m detached | Amenity of adjoining premises, only if a neighbour objects | 21-day consultation, 42-day determination |
| Full householder application | No fixed limit | Design, materials, policy, amenity, everything | 8-week target |
| Any of these on designated land | 3m / 4m only | Prior approval scheme unavailable | Full application beyond the limits |
Limits and procedure from the GPDO 2015, Schedule 2, Part 1, Class A and paragraph A.4, made permanent by amendment in 2019.
A process built around the 21-day consultation, which is where these schemes are won or lost.
Send us your Redbridge postcode and house type. We confirm whether the property is on designated land, whether the scheme is available, and what depth you can realistically take.
We measure the original rear wall, eaves height, boundary distances and the neighbouring windows that the amenity assessment will turn on.
We draw the extension to the 6m or 8m limit with the boundary relationship shown in section, and prepare the written description and adjoining-owner details Redbridge Council needs to start the consultation.
We submit, track the 21-day consultation and the 42-day determination, respond to any objection on amenity grounds, and revise free until the decision.
Three metres on a terraced or semi-detached house and four on a detached one under ordinary permitted development. Under the larger home extension prior approval scheme those double to six and eight metres, provided you notify Redbridge Council before starting and the conditions on height, materials and land coverage are met. The scheme is not available on designated land.
It is a notification, not an application for permission. You tell Redbridge Council what you intend to build, it writes to the adjoining owners, and they have 21 days to object. If nobody objects, you may build. If someone does, the council assesses the effect on the amenity of adjoining premises and must decide within 42 days. Design and policy are not in scope.
The council then considers the impact on the amenity of the adjoining property — loss of light, loss of outlook, and overbearing effect — and nothing else. It cannot refuse because it dislikes the design or the materials. We prepare the drawings so those three questions are already answered in section and on the site plan, which is what usually carries an objected scheme through. This applies to your Redbridge address specifically. Redbridge Council is the decision-maker.
No. The larger home extension scheme is unavailable on designated land, which includes conservation areas such as Wanstead Village (George Green) and Woodford Green, national landscapes, national parks and world heritage sites. On those properties the ordinary 3-metre and 4-metre limits apply, and anything deeper needs a full householder application to Redbridge Council.
Twenty-one days for the neighbour consultation, and a maximum of 42 days from a valid submission for the council to determine it. If the council does not respond within 42 days you may proceed as notified. That deadline is the scheme's real advantage over a full application, and it is why validation completeness matters so much. This applies to your Redbridge address specifically. Redbridge Council is the decision-maker.
Yes — always. Prior approval deals only with the planning position. A 6-metre rear extension still needs building control approval for foundations, structure, drainage, thermal performance and fire safety, and the beam over the opening into the existing house needs designing and calculating. We prepare both sets so the notified scheme is the buildable one. This applies to your Redbridge address specifically. Redbridge Council is the decision-maker.
We quote each Redbridge scheme individually, because plot shape and the boundary relationship drive the work, and send a fixed, no-obligation quote within one working day. It covers the notification pack and free revisions until Redbridge Council determines it. Call 020 7864 7245 to start.
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Same fixed quotes, same fast drawings — wherever your project is.