The fast route to a deep single-storey rear extension in Redlands — up to 6 metres on an attached house or 8 on a detached one — via Reading Borough Council's prior approval scheme rather than a full planning application.
Reading Borough Council granted 87% of the householder planning decisions it made in its latest published year — level with the 87% England-wide householder average. The HMO Article 4 direction means planning permission is normally refused where a new HMO would push the share of HMOs within a 50-metre radius above 25 per cent, which is where a policy-literate drawing pack earns its keep. Its dominant Victorian (1837–1901) and Edwardian (1901–1910) housing stock sets the design brief on most streets.
Before permission is required, Class B allows 40m³ of added loft volume on a terrace and 50m³ on a semi or detached house, and Class A allows a 3m single-storey rear extension on a terrace or 4m on a detached house. Redlands carries at least one Article 4 direction, and conservation areas including Redlands, Kendrick and Christchurch remove those rights outright, so we confirm your exact address before a line is drawn. A validated householder application in Redlands is determined against an 8-week statutory target.
Redlands (grand Victorian villas heavily converted to flats and HMOs), University (Whiteknights) (student rentals around the Whiteknights campus), Erleigh Road (long red-brick Victorian terraces east of the centre), Kendrick (substantial Victorian houses in the Kendrick conservation area), Christchurch (Victorian and Edwardian streets in the Christchurch conservation area) and London Road (villas around the university's historic London Road campus) — these are the Redlands pockets our drawings cover most. Heritage designations here include Redlands, Kendrick, Christchurch and Alexandra Road. Reading Borough Council weighs each proposal against the Reading Borough Local Plan (2019), where converting family houses to further flats or student rooms is resisted and is frequently the deciding issue. Much of Redlands is already converted flats, HMOs and student housing, which hold no householder permitted-development rights of their own.. On roofs the borough is pitched and gabled roofs on the villas and terraces and valley roofs behind the larger Victorian houses, over large Victorian and Edwardian villas subdivided into flats and HMOs, red-brick Victorian terraces off the London and Erleigh roads and student and rented housing around the university.
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 Redlands and Kendrick 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.
Redlands is largely large Victorian and Edwardian villas subdivided into flats and HMOs, red-brick Victorian terraces off the London and Erleigh roads and student and rented housing around the university. The HMO Article 4 direction means planning permission is normally refused where a new HMO would push the share of HMOs within a 50-metre radius above 25 per cent, which matters here because an objecting neighbour puts amenity squarely in front of a case officer. Redlands ward sits inside Reading's HMO Article 4 direction, in force since 2013, which removes the automatic right to change a house (C3) to a small house in multiple occupation (C4) in this student-heavy area next to the University of Reading.
The scheme is available where all of these hold. Fail any one and it is a full application to Reading Borough Council instead:
We prepare the notification pack Reading Borough 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 Reading Borough Council's real householder decision record, drawn from official planning statistics and refreshed as new data lands. Redlands grants a solid share of householder applications, but as the borough's densest student-HMO belt it is where the Article 4 direction and the protection of remaining family houses shape most refusals. 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, England, 1 April 2025 - 31 March 2026). 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 Redlands, University (Whiteknights) and Erleigh Road, 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.
Converting family houses to further flats or student rooms is resisted and is frequently the deciding issue. 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 Redlands. A few of the areas where deep rear extensions come up most often:
Prior approval drawings for Redlands — grand Victorian villas heavily converted to flats and HMOs — dimensioned to the 6m and 8m limits and prepared for Reading Borough Council's neighbour consultation.
Prior approval drawings for University (Whiteknights) — student rentals around the Whiteknights campus — dimensioned to the 6m and 8m limits and prepared for Reading Borough Council's neighbour consultation.
Prior approval drawings for Erleigh Road — long red-brick Victorian terraces east of the centre — dimensioned to the 6m and 8m limits and prepared for Reading Borough Council's neighbour consultation.
Prior approval drawings for Kendrick — substantial Victorian houses in the Kendrick conservation area — dimensioned to the 6m and 8m limits and prepared for Reading Borough Council's neighbour consultation.
Prior approval drawings for Christchurch — Victorian and Edwardian streets in the Christchurch conservation area — dimensioned to the 6m and 8m limits and prepared for Reading Borough Council's neighbour consultation.
Prior approval drawings for London Road — villas around the university's historic London Road campus — dimensioned to the 6m and 8m limits and prepared for Reading Borough 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 Redlands 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 Reading Borough 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 Reading Borough Council before starting and the conditions on height, materials and land coverage are met. The scheme is not available on designated land. This applies to your Redlands address specifically.
It is a notification, not an application for permission. You tell Reading Borough 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. This applies to your Redlands address specifically.
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 Redlands address specifically. Reading Borough Council is the decision-maker.
No. The larger home extension scheme is unavailable on designated land, which includes conservation areas such as Redlands and Kendrick, 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 Reading Borough 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 Redlands address specifically. Reading Borough 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 Redlands address specifically. Reading Borough Council is the decision-maker.
We quote each Redlands 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 Reading Borough Council determines it. Call 020 7864 7245 to start.
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