The fast route to a deep single-storey rear extension in Tilehurst — 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. Hip-to-gable and roof changes on the matched interwar semis are read against the symmetry of the paired houses, which is where a policy-literate drawing pack earns its keep. Its dominant Victorian (1837–1901), Edwardian (1901–1910), interwar (1918–1939) and postwar (1945–1970) housing stock sets the design brief on most streets.
Under Class B, a rear dormer stays permitted development up to 40m³ of added roof volume on a terrace or 50m³ on a semi-detached or detached house, while Class A allows a single-storey rear extension of 3m beyond the original rear wall on a terrace and 4m on a detached house before a full application is needed. In conservation areas such as The Mount and Routh Lane those rights are removed, so we confirm your exact address before a line is drawn. A validated householder application in Tilehurst is determined against an 8-week statutory target.
Tilehurst village (the older core around St Michael's church and Routh Lane), Norcot (interwar and postwar estates on the western slopes), Kentwood (1930s semi-detached suburbia stepping up the hill), Little Heath (detached and semi-detached houses on the borough's western edge), Chapel Hill (terraces and semis around the old chapel and railway) and The Mount (Victorian and Edwardian houses in the hillside conservation area) — these are the Tilehurst pockets our drawings cover most. Heritage designations here include The Mount and Routh Lane. Reading Borough Council weighs each proposal against the Reading Borough Local Plan (2019), where the elevated Tilehurst ridge means bulky rear and roof additions are checked for their effect on the western skyline. On roofs the borough is hipped roofs on the interwar semis and pitched and gabled roofs on the older terraces, over interwar semi-detached houses across the estates, Edwardian and Victorian terraces near the old village and postwar suburban housing toward Norcot and Kentwood.
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 The Mount and Routh Lane 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.
Tilehurst is largely interwar semi-detached houses across the estates, Edwardian and Victorian terraces near the old village and postwar suburban housing toward Norcot and Kentwood. Hip-to-gable and roof changes on the matched interwar semis are read against the symmetry of the paired houses, which matters here because an objecting neighbour puts amenity squarely in front of a case officer. Tilehurst lies outside Reading's HMO Article 4 direction, which is focused on Park, Redlands and Katesgrove wards, so permitted-development rights apply as standard away from The Mount and Routh Lane conservation areas.
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. Tilehurst approves a high share of householder work, with most scrutiny falling on keeping the rhythm of its interwar semi-detached streets and the small The Mount and Routh Lane conservation areas. 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 Tilehurst village, Norcot and Kentwood, 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 elevated Tilehurst ridge means bulky rear and roof additions are checked for their effect on the western skyline. 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 Tilehurst. A few of the areas where deep rear extensions come up most often:
Prior approval drawings for Tilehurst village — the older core around St Michael's church and Routh Lane — dimensioned to the 6m and 8m limits and prepared for Reading Borough Council's neighbour consultation.
Prior approval drawings for Norcot — interwar and postwar estates on the western slopes — dimensioned to the 6m and 8m limits and prepared for Reading Borough Council's neighbour consultation.
Prior approval drawings for Kentwood — 1930s semi-detached suburbia stepping up the hill — dimensioned to the 6m and 8m limits and prepared for Reading Borough Council's neighbour consultation.
Prior approval drawings for Little Heath — detached and semi-detached houses on the borough's western edge — dimensioned to the 6m and 8m limits and prepared for Reading Borough Council's neighbour consultation.
Prior approval drawings for Chapel Hill — terraces and semis around the old chapel and railway — dimensioned to the 6m and 8m limits and prepared for Reading Borough Council's neighbour consultation.
Prior approval drawings for The Mount — Victorian and Edwardian houses in the hillside conservation area — 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 Tilehurst 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 Tilehurst 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 Tilehurst 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 Tilehurst 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 The Mount and Routh Lane, 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. This applies to your Tilehurst address specifically.
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 Tilehurst 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 Tilehurst address specifically. Reading Borough Council is the decision-maker.
We quote each Tilehurst 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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Same fixed quotes, same fast drawings — wherever your project is.