The fast route to a deep single-storey rear extension in Woughton — up to 6 metres on an attached house or 8 on a detached one — via Milton Keynes City Council's prior approval scheme rather than a full planning application.
Milton Keynes City Council granted 87% of the householder planning decisions it made in its latest published year — level with the 87% England-wide householder average. The New Town's grid-road and linear-park design code shapes plot layout, boundary treatments and landscape setting across the grid squares, which is where a policy-literate drawing pack earns its keep. Its mixed housing stock sets the design brief street by street.
The permitted-development ceilings are fixed: 40m³ of new roof volume for a terraced loft and 50m³ for a semi or detached house under Class B, plus a 3m single-storey rear extension on a terrace or 4m on a detached house under Class A. In conservation areas such as Woughton-on-the-Green, Milton Keynes Village and Willen those rights are removed, so we confirm your exact address before a line is drawn. A validated householder application in Woughton is determined against an 8-week statutory target.
Woughton on the Green (a historic green-side village and conservation area enclosed by the grid roads), Milton Keynes Village (the ancient village that gave the New Town its name, a conservation area), Willen (a historic village and conservation area beside Willen Lake and the peace pagoda), Broughton (a former village and conservation area on the eastern grid), Woolstone (the paired hamlets of Great and Little Woolstone within the central grid squares) and Springfield (a 1970s grid-square estate close to Central Milton Keynes) — these are the Woughton pockets our drawings cover most. Heritage designations here include Woughton-on-the-Green, Milton Keynes Village, Willen and Broughton. Milton Keynes City Council weighs each proposal against Plan:MK (the Milton Keynes Local Plan 2019), where historic village cores such as Woughton and Milton Keynes Village survive as conservation islands inside the modern grid, with tight controls on their heritage frontages. On roofs the borough is pitched clay-tile and thatch roofs on the village cores and gabled and mono-pitch roofs on the grid-square estates, over historic village cores of stone and brick cottages absorbed into the New Town grid, 1970s and 1980s grid-square estate housing and later low-density family housing across the grid squares.
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 Woughton-on-the-Green and Milton Keynes Village 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.
Woughton is largely historic village cores of stone and brick cottages absorbed into the New Town grid, 1970s and 1980s grid-square estate housing and later low-density family housing across the grid squares. The New Town's grid-road and linear-park design code shapes plot layout, boundary treatments and landscape setting across the grid squares, which matters here because an objecting neighbour puts amenity squarely in front of a case officer. No residential Article 4 direction applies to the central grid villages, so permitted-development rights remain intact outside the conservation areas, while the Woughton-on-the-Green, Milton Keynes Village, Willen and Broughton conservation areas apply standard controls on the historic cores.
The scheme is available where all of these hold. Fail any one and it is a full application to Milton Keynes City Council instead:
We prepare the notification pack Milton Keynes City 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 Milton Keynes City Council's real householder decision record, drawn from official planning statistics and refreshed as new data lands. Milton Keynes approves the large majority of householder applications, with the grid-square design code and the conservation islands of the historic villages the main constraints here. 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 Woughton on the Green, Milton Keynes Village and Willen, 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.
Historic village cores such as Woughton and Milton Keynes Village survive as conservation islands inside the modern grid, with tight controls on their heritage frontages. 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 Woughton. A few of the areas where deep rear extensions come up most often:
Prior approval drawings for Woughton on the Green — a historic green-side village and conservation area enclosed by the grid roads — dimensioned to the 6m and 8m limits and prepared for Milton Keynes City Council's neighbour consultation.
Prior approval drawings for Milton Keynes Village — the ancient village that gave the New Town its name, a conservation area — dimensioned to the 6m and 8m limits and prepared for Milton Keynes City Council's neighbour consultation.
Prior approval drawings for Willen — a historic village and conservation area beside Willen Lake and the peace pagoda — dimensioned to the 6m and 8m limits and prepared for Milton Keynes City Council's neighbour consultation.
Prior approval drawings for Broughton — a former village and conservation area on the eastern grid — dimensioned to the 6m and 8m limits and prepared for Milton Keynes City Council's neighbour consultation.
Prior approval drawings for Woolstone — the paired hamlets of Great and Little Woolstone within the central grid squares — dimensioned to the 6m and 8m limits and prepared for Milton Keynes City Council's neighbour consultation.
Prior approval drawings for Springfield — a 1970s grid-square estate close to Central Milton Keynes — dimensioned to the 6m and 8m limits and prepared for Milton Keynes City 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 Woughton 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 Milton Keynes City 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 Milton Keynes City 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 Woughton address specifically.
It is a notification, not an application for permission. You tell Milton Keynes City 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 Woughton 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 Woughton address specifically. Milton Keynes City Council is the decision-maker.
No. The larger home extension scheme is unavailable on designated land, which includes conservation areas such as Woughton-on-the-Green and Milton Keynes Village, 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 Milton Keynes City 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 Woughton address specifically. Milton Keynes City 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 Woughton address specifically. Milton Keynes City Council is the decision-maker.
We quote each Woughton 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 Milton Keynes City Council determines it. Call 020 7864 7245 to start.
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Same fixed quotes, same fast drawings — wherever your project is.