Two-storey extension drawings for Stockport homes — bedroom above, living space below, drawn against the 3-metre projection and 7-metre boundary rules and to Stockport Council's design guidance, delivered in days and revised free until your decision.
Stockport Council granted 92% of the householder planning decisions it made in its latest published year — 5 points above the 87% England-wide householder average. Because Stockport withdrew from the Places for Everyone joint plan, householder schemes are still decided against a dated 2006 UDP pending a new Local Plan, 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.
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. Stockport carries at least one Article 4 direction, and conservation areas including Heaton Moor, Heaton Mersey Village and Marple Bridge remove those rights outright, so we confirm your exact address before a line is drawn. A validated householder application in Stockport is determined against an 8-week statutory target.
Heaton Moor (Victorian and Edwardian villas in a protected conservation area), Heaton Mersey (the Heaton Mersey Village conservation area of period villas and cottages), Bramhall (affluent interwar semi-detached suburbia on leafy plots), Cheadle Hulme (interwar and postwar semis around the village core), Marple (stone-built cottages and canal-side housing on the Pennine fringe) and Reddish (dense Victorian brick terraces near the mill heritage) — these are the Stockport pockets our drawings cover most. Heritage designations here include Heaton Moor, Heaton Mersey Village, Marple Bridge, Cheadle Village, Davenport Park and Mill Brow. Stockport Council weighs each proposal against the Stockport Unitary Development Plan Review (adopted 2006) and the emerging Stockport Local Plan (Stockport is not part of the Places for Everyone joint plan), where the borough's exceptionally dense network of conservation-area Article 4 directions catches routine works — windows, rooflights, porches — that would be permitted development elsewhere. Converted villas and terraced flats are common across the Heatons and Edgeley, and flats carry no householder permitted-development rights.. On roofs the borough is gabled slate roofs on the Victorian villas and terraces, hipped roofs on the interwar semis and stone-flagged pitched roofs on the older Marple cottages, over Victorian and Edwardian villas and terraces across the Heatons, interwar semi-detached houses in Bramhall and Cheadle Hulme, stone-built cottages and terraces around Marple and Mellor and Victorian brick terraces in Reddish and Edgeley.
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. Stockport is largely Victorian and Edwardian villas and terraces across the Heatons, interwar semi-detached houses in Bramhall and Cheadle Hulme, stone-built cottages and terraces around Marple and Mellor and Victorian brick terraces in Reddish and Edgeley, and gabled slate roofs on the Victorian villas and terraces, hipped roofs on the interwar semis and stone-flagged pitched roofs on the older Marple cottages 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.
Because Stockport withdrew from the Places for Everyone joint plan, householder schemes are still decided against a dated 2006 UDP pending a new Local Plan. Stockport has thirty-seven conservation areas — the most in Greater Manchester — and around thirty carry Article 4 directions removing permitted-development rights on windows, doors, roofing materials, chimneys and boundary walls, with further Article 4(1) directions over Cheadle Village, Davenport Park and Mill Brow.
Some two-storey rear extensions are permitted development. You will need a full application to Stockport 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 Stockport Council checks first — then submit a validation-complete pack.
Below is Stockport Council's real householder decision record, drawn from official planning statistics and refreshed as new data lands. Stockport grants a high share of householder applications, though its unusually broad conservation-area Article 4 coverage and an ageing development plan are the defining constraints. 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 Heaton Moor, Heaton Mersey and Bramhall, 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 victorian and edwardian villas and terraces across the heatons, 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.
The borough's exceptionally dense network of conservation-area Article 4 directions catches routine works — windows, rooflights, porches — that would be permitted development elsewhere. 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 Stockport. A few of the areas where they come up most often:
Two storey extension drawings for Heaton Moor — Victorian and Edwardian villas in a protected conservation area — dimensioned against the 3m and 7m limits and drawn to Stockport Council's guidance.
Two storey extension drawings for Heaton Mersey — the Heaton Mersey Village conservation area of period villas and cottages — dimensioned against the 3m and 7m limits and drawn to Stockport Council's guidance.
Two storey extension drawings for Bramhall — affluent interwar semi-detached suburbia on leafy plots — dimensioned against the 3m and 7m limits and drawn to Stockport Council's guidance.
Two storey extension drawings for Cheadle Hulme — interwar and postwar semis around the village core — dimensioned against the 3m and 7m limits and drawn to Stockport Council's guidance.
Two storey extension drawings for Marple — stone-built cottages and canal-side housing on the Pennine fringe — dimensioned against the 3m and 7m limits and drawn to Stockport Council's guidance.
Two storey extension drawings for Reddish — dense Victorian brick terraces near the mill heritage — dimensioned against the 3m and 7m limits and drawn to Stockport 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 Stockport 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 Stockport Council validates and decides two-storey applications.
Send us your Stockport postcode and garden depth. We measure the 7-metre boundary rule against your plot, confirm designation status, and score your odds against live Stockport 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 Stockport 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 Stockport, the 7-metre rule is what most commonly forces a full application to Stockport 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 Stockport gardens this is decisive, and we measure it on survey before any design work rather than discovering it at validation. Stockport Council is the decision-maker.
Not under permitted development — two-storey side extensions always need a full application to Stockport 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.
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 Stockport address specifically. Stockport 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 Stockport Council's planning decision, so we flag the notice period early and detail the junction on the drawings.
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 Stockport address specifically. Stockport Council is the decision-maker.
We quote each Stockport 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 Stockport Council approves. Call 020 7864 7245 to start.
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