Two-storey extension drawings for South Bank homes — bedroom above, living space below, drawn against the 3-metre projection and 7-metre boundary rules and to City of York Council's design guidance, delivered in days and revised free until your decision.
City of York Council granted 90% of the householder planning decisions it made in its latest published year — 3 points above the 87% England-wide householder average. The riverside New Walk / Terry Avenue setting and Knavesmire open space are protected, constraining scale on the streets that back onto them, 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.
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. South Bank carries at least one Article 4 direction, and conservation areas including Tadcaster Road / The Racecourse / Terry's Factory, New Walk / Terry Avenue and Bishopthorpe remove those rights outright, so we confirm your exact address before a line is drawn. A validated householder application in South Bank is determined against an 8-week statutory target.
Bishopthorpe Road (independent shopping street framed by Edwardian terraces), South Bank (grid of late-Victorian and Edwardian terraces between the river and the racecourse), Scarcroft (bay-fronted terraces around Scarcroft Road and the recreation ground), Knavesmire (villas and terraces overlooking the Knavesmire and racecourse) and Clementhorpe (riverside Victorian terraces near the New Walk conservation area) — these are the South Bank pockets our drawings cover most. Heritage designations here include Tadcaster Road / The Racecourse / Terry's Factory, New Walk / Terry Avenue and Bishopthorpe. City of York Council weighs each proposal against the City of York Local Plan (adopted 2024) and the Tadcaster Road / The Racecourse / Terry's Factory conservation area appraisal, where flood risk from the Ouse limits ground-floor and outbuilding works on the Clementhorpe riverside plots. Many South Bank terraces have been split into flats, which carry no householder permitted-development rights.. On roofs the borough is pitched slate roofs on the terraces and front gables and bay roofs on the Edwardian villas, over late-Victorian and Edwardian terraces off Bishopthorpe Road, bay-fronted villas near the Knavesmire and converted terraced flats.
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. South Bank is largely late-Victorian and Edwardian terraces off Bishopthorpe Road, bay-fronted villas near the Knavesmire and converted terraced flats, and pitched slate roofs on the terraces and front gables and bay roofs on the Edwardian villas 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 riverside New Walk / Terry Avenue setting and Knavesmire open space are protected, constraining scale on the streets that back onto them. The South Bank grid sits beside the Tadcaster Road / The Racecourse / Terry's Factory conservation area and the riverside New Walk / Terry Avenue conservation area, and the citywide HMO Article 4 direction applies to its terraced streets.
Some two-storey rear extensions are permitted development. You will need a full application to City of York 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 City of York Council checks first — then submit a validation-complete pack.
Below is City of York Council's real householder decision record, drawn from official planning statistics and refreshed as new data lands. City of York grants the large majority of householder applications across South Bank, with the riverside and Knavesmire conservation settings the main factor shaping design on the streets that adjoin them. 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 Bishopthorpe Road, South Bank and Scarcroft, 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 late-victorian and edwardian terraces off bishopthorpe road, 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.
Flood risk from the Ouse limits ground-floor and outbuilding works on the Clementhorpe riverside plots. 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 South Bank. A few of the areas where they come up most often:
Two storey extension drawings for Bishopthorpe Road — independent shopping street framed by Edwardian terraces — dimensioned against the 3m and 7m limits and drawn to City of York Council's guidance.
Two storey extension drawings for South Bank — grid of late-Victorian and Edwardian terraces between the river and the racecourse — dimensioned against the 3m and 7m limits and drawn to City of York Council's guidance.
Two storey extension drawings for Scarcroft — bay-fronted terraces around Scarcroft Road and the recreation ground — dimensioned against the 3m and 7m limits and drawn to City of York Council's guidance.
Two storey extension drawings for Knavesmire — villas and terraces overlooking the Knavesmire and racecourse — dimensioned against the 3m and 7m limits and drawn to City of York Council's guidance.
Two storey extension drawings for Clementhorpe — riverside Victorian terraces near the New Walk conservation area — dimensioned against the 3m and 7m limits and drawn to City of York 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 City of York 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 City of York Council validates and decides two-storey applications.
Send us your South Bank postcode and garden depth. We measure the 7-metre boundary rule against your plot, confirm designation status, and score your odds against live City of York 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 City of York 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 South Bank, the 7-metre rule is what most commonly forces a full application to City of York 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 South Bank gardens this is decisive, and we measure it on survey before any design work rather than discovering it at validation. City of York Council is the decision-maker.
Not under permitted development — two-storey side extensions always need a full application to City of York 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 South Bank 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 South Bank address specifically. City of York 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 City of York Council's planning decision, so we flag the notice period early and detail the junction on the drawings. This applies to your South Bank 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 South Bank address specifically. City of York Council is the decision-maker.
We quote each South Bank 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 City of York Council approves. Call 020 7864 7245 to start.
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