Two-storey extension drawings for Horsforth homes — bedroom above, living space below, drawn against the 3-metre projection and 7-metre boundary rules and to Leeds City Council's design guidance, delivered in days and revised free until your decision.
Leeds City Council granted 83% of the householder planning decisions it made in its latest published year — 4 points below the 87% England-wide householder average. Green belt to the north and west of Horsforth tightly limits extensions and new outbuildings, which is where a policy-literate drawing pack earns its keep. Its dominant Victorian (1837–1901), interwar (1918–1939) and postwar (1945–1970) housing stock sets the design brief on most streets.
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. Horsforth carries at least one Article 4 direction, and conservation areas including Horsforth, Horsforth Cragg Hill and Newlay remove those rights outright, so we confirm your exact address before a line is drawn. A validated householder application in Horsforth is determined against an 8-week statutory target.
Town Street (gritstone cottages and shops along the historic spine), Cragg Hill (stone terraces inside the Horsforth Cragg Hill conservation area), Newlay (riverside stone houses by the Leeds–Liverpool Canal conservation area), Woodside (Victorian and interwar houses near the station), Hall Park (interwar and postwar semis and detached houses) and Rawdon edge (larger stone houses towards Cragg Wood) — these are the Horsforth pockets our drawings cover most. Heritage designations here include Horsforth, Horsforth Cragg Hill, Newlay, Rawdon Cragg Wood and Woodhall Hills. Leeds City Council weighs each proposal against Leeds Local Plan / Core Strategy and the relevant SPDs, where gritstone cottages and terraces are held to matching natural stone and stone-slate roofs in the conservation areas. On roofs the borough is pitched stone-slate and slate gable roofs on the stone terraces and hipped roofs on the interwar semis, over millstone-grit stone cottages and through terraces, Victorian stone and red-brick villas, interwar semi-detached houses and postwar detached and estate housing.
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. Horsforth is largely millstone-grit stone cottages and through terraces, Victorian stone and red-brick villas, interwar semi-detached houses and postwar detached and estate housing, and pitched stone-slate and slate gable roofs on the stone terraces and hipped roofs on the interwar semis 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.
Green belt to the north and west of Horsforth tightly limits extensions and new outbuildings. Horsforth marks the northern edge of the inner-Leeds HMO Article 4 ring, so converting a house to a small (C4) house in multiple occupation needs planning permission rather than permitted development.
Some two-storey rear extensions are permitted development. You will need a full application to Leeds 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 Leeds City Council checks first — then submit a validation-complete pack.
Below is Leeds City Council's real householder decision record, drawn from official planning statistics and refreshed as new data lands. Leeds grants most householder applications in Horsforth, though green belt on the fringes and stone conservation-area detailing are the main limits on what gets consent. 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 Town Street, Cragg Hill and Newlay, 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 millstone-grit stone cottages and through terraces, 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.
Gritstone cottages and terraces are held to matching natural stone and stone-slate roofs in the conservation areas. 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 Horsforth. A few of the areas where they come up most often:
Two storey extension drawings for Town Street — gritstone cottages and shops along the historic spine — dimensioned against the 3m and 7m limits and drawn to Leeds City Council's guidance.
Two storey extension drawings for Cragg Hill — stone terraces inside the Horsforth Cragg Hill conservation area — dimensioned against the 3m and 7m limits and drawn to Leeds City Council's guidance.
Two storey extension drawings for Newlay — riverside stone houses by the Leeds–Liverpool Canal conservation area — dimensioned against the 3m and 7m limits and drawn to Leeds City Council's guidance.
Two storey extension drawings for Woodside — Victorian and interwar houses near the station — dimensioned against the 3m and 7m limits and drawn to Leeds City Council's guidance.
Two storey extension drawings for Hall Park — interwar and postwar semis and detached houses — dimensioned against the 3m and 7m limits and drawn to Leeds City Council's guidance.
Two storey extension drawings for Rawdon edge — larger stone houses towards Cragg Wood — dimensioned against the 3m and 7m limits and drawn to Leeds 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 Leeds 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 Leeds City Council validates and decides two-storey applications.
Send us your Horsforth postcode and garden depth. We measure the 7-metre boundary rule against your plot, confirm designation status, and score your odds against live Leeds 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 Leeds 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 Horsforth, the 7-metre rule is what most commonly forces a full application to Leeds 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 Horsforth gardens this is decisive, and we measure it on survey before any design work rather than discovering it at validation. Leeds City Council is the decision-maker.
Not under permitted development — two-storey side extensions always need a full application to Leeds 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 Horsforth 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 Horsforth address specifically. Leeds 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 Leeds City Council's planning decision, so we flag the notice period early and detail the junction on the drawings. This applies to your Horsforth 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 Horsforth address specifically. Leeds City Council is the decision-maker.
We quote each Horsforth 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 Leeds City Council approves. Call 020 7864 7245 to start.
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