Two-storey extension drawings for Great Linford homes — bedroom above, living space below, drawn against the 3-metre projection and 7-metre boundary rules and to Milton Keynes City Council's design guidance, delivered in days and revised free until your decision.
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 grid-road and linear-park design code governs boundary treatments and landscaping across the estates, which is where a policy-literate drawing pack earns its keep. Its mixed housing stock sets the design brief street by street.
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 Great Linford, Loughton and Shenley Church End those rights are removed, so we confirm your exact address before a line is drawn. A validated householder application in Great Linford is determined against an 8-week statutory target.
Great Linford (a historic manorial village and conservation area beside the Grand Union Canal), Downs Barn (a 1970s grid-square estate south of the village), Conniburrow (early New Town housing near Central Milton Keynes), Bradville (one of the earliest New Town estates, built to the north), Giffard Park (1980s family housing on the northern grid) and Blakelands (later residential and employment development on the northern edge) — these are the Great Linford pockets our drawings cover most. Heritage designations here include Great Linford, Loughton and Shenley Church End. Milton Keynes City Council weighs each proposal against Plan:MK (the Milton Keynes Local Plan 2019), where Great Linford's manorial village core survives as a conservation island in the grid, with heritage controls on its cottages and the canal setting. On roofs the borough is pitched stone-slate and clay-tile roofs on the village core and gabled and hipped roofs on the modern estates, over a historic manorial village core of stone cottages around the church and canal, 1970s and 1980s grid-square estate housing and later family housing across the northern grid squares.
Adding at first floor changes the question the case officer asks. A single-storey extension is judged mostly on daylight and garden loss; a two-storey extension is judged on overlooking, bulk against the neighbouring roofline, and whether it reads as part of the house or bolted onto it. Great Linford is largely a historic manorial village core of stone cottages around the church and canal, 1970s and 1980s grid-square estate housing and later family housing across the northern grid squares, and pitched stone-slate and clay-tile roofs on the village core and gabled and hipped roofs on the modern estates set what a matching roof actually means here.
The permitted-development route exists but is narrow: 3 metres of rear projection, a 7-metre stand-off from the rear boundary, eaves and ridge no higher than the original, and side-facing upper windows obscure-glazed and non-opening below 1.7 metres above floor level. Most two-storey schemes fail one of those, usually the 7-metre boundary rule on a shorter garden, and go in as a full application instead. We establish which route applies before designing, because it changes the drawing set.
The New Town grid-road and linear-park design code governs boundary treatments and landscaping across the estates. No residential Article 4 direction applies in Great Linford, so permitted-development rights remain intact outside the conservation areas, while the Great Linford, Loughton and Shenley Church End conservation areas protect the surviving historic cores.
Some two-storey rear extensions are permitted development. You will need a full application to Milton Keynes City Council if any of these apply:
We set the projection and boundary distance on the site plan, prove the roof-pitch match on the elevations, and specify obscure glazing on the side windows — the three things Milton Keynes City Council checks first — then submit a validation-complete pack.
Below is Milton Keynes City Council's real householder decision record, drawn from official planning statistics and refreshed as new data lands. Milton Keynes grants most householder applications, with the grid-square design code and the Great Linford conservation core the leading constraints locally. Two-storey schemes attract more neighbour comment than any other householder work, so the overlooking and daylight case has to be made on the drawings.
Source: MHCLG planning application statistics (householder decisions, England, 1 April 2025 - 31 March 2026). Compare every borough on our London approval-rate league table.
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Across Great Linford, Downs Barn and Conniburrow, the schemes that succeed set the first floor back from the ground floor, keep the ridge below the original, and treat the flank wall as blank or obscure-glazed. On a historic manorial village core of stone cottages around the church and canal, matching the eaves line matters more than matching the brick: an extension that carries the existing eaves through reads as original even in a different material.
Great Linford's manorial village core survives as a conservation island in the grid, with heritage controls on its cottages and the canal setting. We draw the 45-degree daylight test from the neighbour's nearest habitable window, show the window positions in section, and set out the steel and foundation implications early — a two-storey extension changes the load path, so the structural design and the planning design have to be developed together rather than in sequence.
We draw two-storey extensions across Great Linford. A few of the areas where they come up most often:
Two storey extension drawings for Great Linford — a historic manorial village and conservation area beside the Grand Union Canal — dimensioned against the 3m and 7m limits and drawn to Milton Keynes City Council's guidance.
Two storey extension drawings for Downs Barn — a 1970s grid-square estate south of the village — dimensioned against the 3m and 7m limits and drawn to Milton Keynes City Council's guidance.
Two storey extension drawings for Conniburrow — early New Town housing near Central Milton Keynes — dimensioned against the 3m and 7m limits and drawn to Milton Keynes City Council's guidance.
Two storey extension drawings for Bradville — one of the earliest New Town estates, built to the north — dimensioned against the 3m and 7m limits and drawn to Milton Keynes City Council's guidance.
Two storey extension drawings for Giffard Park — 1980s family housing on the northern grid — dimensioned against the 3m and 7m limits and drawn to Milton Keynes City Council's guidance.
Two storey extension drawings for Blakelands — later residential and employment development on the northern edge — dimensioned against the 3m and 7m limits and drawn to Milton Keynes City Council's guidance.
The first-floor limits are tighter than the ground-floor ones. This is how the common cases compare.
| Scheme | Permitted development? | Deciding limit | What Milton Keynes City Council checks |
|---|---|---|---|
| Two-storey rear, 3m projection, 7m+ to boundary | Often yes | 3m projection / 7m boundary | Roof match, side-window glazing |
| Two-storey rear, under 7m to boundary | No — full application | Rear-boundary distance | Overlooking, daylight, garden loss |
| Two-storey side extension | No — full application | Side elevation | Gap to boundary, street rhythm |
| Two-storey wraparound | No — full application | Combined footprint | Bulk, massing, neighbour amenity |
| Any two-storey on designated land | No — full application | Designation | Character and appearance |
Limits from the GPDO 2015, Schedule 2, Part 1, Class A — two-storey rear extension conditions.
A fixed process built around how Milton Keynes City Council validates and decides two-storey applications.
Send us your Great Linford postcode and garden depth. We measure the 7-metre boundary rule against your plot, confirm designation status, and score your odds against live Milton Keynes City Council decisions.
We measure the original rear wall, eaves and ridge heights, garden depth and every neighbouring window that faces the site — the inputs the daylight and overlooking case is built from.
Chartered designers develop the two-storey addition to your brief with the roof and eaves resolved, and we coordinate the load path so the structural scheme and the planning scheme are the same building.
We submit the application, manage validation and case-officer queries, and revise the drawings free until Milton Keynes City Council issues its decision.
Often, but not always. A two-storey rear extension can be permitted development if it projects no more than 3 metres, sits at least 7 metres from the rear boundary, does not exceed the existing eaves and ridge, and has obscure-glazed non-opening side windows below 1.7 metres. In Great Linford, the 7-metre rule is what most commonly forces a full application to Milton Keynes City Council.
No part of a permitted-development two-storey rear extension may come within 7 metres of the boundary opposite the rear wall of the house. It exists to protect the neighbour behind you from being overlooked at first floor. On shorter Great Linford gardens this is decisive, and we measure it on survey before any design work rather than discovering it at validation. Milton Keynes City Council is the decision-maker.
Not under permitted development — two-storey side extensions always need a full application to Milton Keynes City Council. They are assessed on the gap to the boundary, whether the street's rhythm of spaces between houses survives, and whether the extension is subordinate to the original. Setting the first floor back from the front building line and down from the ridge is what usually makes the difference. This applies to your Great Linford address specifically.
Overlooking is the most common objection, and it is answerable on the drawings. We position habitable-room windows away from neighbouring gardens, obscure-glaze and fix shut anything on the flank below 1.7 metres, and show the sight lines in section. Where the geometry is tight, a rooflight or a high-level window gives the same daylight without the mutual overlooking that draws objections. This applies to your Great Linford address specifically. Milton Keynes City Council is the decision-maker.
Almost certainly. Excavating within 3 metres of a neighbouring structure and building on or up to the boundary both trigger the Party Wall etc. Act 1996, and a two-storey extension usually does both. It is entirely separate from Milton Keynes City Council's planning decision, so we flag the notice period early and detail the junction on the drawings. This applies to your Great Linford address specifically.
Yes. Adding a floor changes the load path from roof to foundation, so beams, padstones and foundation depths all need designing and calculating for building control. Planning and building regulations are separate consents, and the structural set is what building control assesses — we prepare both so the approved scheme is the buildable one. This applies to your Great Linford address specifically. Milton Keynes City Council is the decision-maker.
We quote each Great Linford two-storey extension individually, because plot depth, roof form and structural complexity vary house to house, and send a fixed, no-obligation quote within one working day. It covers the drawing pack with free revisions until Milton Keynes City Council approves. Call 020 7864 7245 to start.
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