Back-of-house extension drawings for The Avenues homes — the glazed kitchen-diner across the rear, drawn to Hull City Council's depth and daylight limits, delivered in days and revised free until your decision, with a free approval-odds check first.
Hull City Council granted 91% of the householder planning decisions it made in its latest published year — 4 points above the 87% England-wide householder average. Almost the whole district lies within a high tidal-flood-risk zone, so extensions and conversions are expected to raise finished floor levels and add flood resilience, 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.
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. The Avenues carries at least one Article 4 direction, and conservation areas including Avenues and Pearson Park, Princes Avenue and Newland remove those rights outright, so we confirm your exact address before a line is drawn. A validated householder application in The Avenues is determined against an 8-week statutory target.
Park Avenue (grandest of the four avenues, wide villas around the restored fountains), Westbourne Avenue (long avenue of gabled Victorian houses inside the conservation area), Marlborough Avenue (red-brick terraces and villas with heavy heritage control), Victoria Avenue (smaller avenue houses close to Princes Avenue), Princes Avenue (commercial and residential frontages in their own conservation area) and Salisbury Street (tight Victorian terraces on the eastern edge of the Avenues) — these are the The Avenues pockets our drawings cover most. Heritage designations here include Avenues and Pearson Park, Princes Avenue and Newland. Hull City Council weighs each proposal against the Hull Local Plan 2016–2032, where the HMO Article 4 direction means sub-division and student conversions are managed tightly against clustering and amenity standards. Many of the large villas have been split into flats and HMOs, and those units carry no householder permitted-development rights.. On roofs the borough is pitched slate roofs with decorative gables on the villas and double-pitched roofs on the terraces, over large late-Victorian villas and terraces off the four tree-lined avenues, Edwardian red-brick terraces and sub-divided houses in multiple occupation.
The rear extension is the workhorse of The Avenues home improvement — it is how a dark back kitchen becomes an open family room facing the garden. Because the borough is built largely from large late-Victorian villas and terraces off the four tree-lined avenues, Edwardian red-brick terraces and sub-divided houses in multiple occupation, most back walls sit close to a neighbour on at least one side, and that proximity, not the design, is what Hull City Council scrutinises. The council reads the proposal against the Hull Local Plan 2016–2032, and the first line an officer draws is the 45-degree splay from the neighbour's nearest window.
So the drawings live or die on geometry. We set the depth against the exact permitted-development figure, hold the eaves and the flat-roof or lantern build-up under the 4-metre height ceiling, and show the projection tested against both the 45-degree plan angle and the 25-degree section angle to the neighbouring windows. Almost the whole district lies within a high tidal-flood-risk zone, so extensions and conversions are expected to raise finished floor levels and add flood resilience, so the rear elevation is composed around it rather than corrected after an objection.
Where the property sits in a conservation area — Avenues and Pearson Park, Princes Avenue and Newland among The Avenues's — the larger-home extension route is switched off and even a modest rear addition needs consent. The Avenues sit inside Hull's houses-in-multiple-occupation Article 4 direction, so converting a family house to a small HMO here needs a full planning application rather than relying on permitted-development rights, and the council refuses new HMOs that would cluster three-in-a-row. We confirm the designation before the survey.
Many single-storey rear extensions in The Avenues are permitted development and need no application. You will normally need to apply to Hull City Council, or use the larger-home prior-approval route, if any of these apply:
We draw the depth, the roof build-up and the daylight splays to each neighbour on the page — the tests Hull City Council's officers apply first — and submit a validation-complete pack, whether that is a lawful development certificate, a larger-home prior-approval notice or a full householder application.
Below is Hull City Council's real householder decision record, taken from official planning statistics and refreshed as new data lands. Hull grants around 91% of the planning applications it decides, but in the Avenues the combined conservation-area and HMO Article 4 controls are the biggest factor shaping what design and use will pass. Rear extensions turn most often on neighbour daylight and depth, so a drawing pack that proves those tests upfront is decided faster and refused less often than a DIY submission.
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 Park Avenue, Westbourne Avenue and Marlborough Avenue, the approved rear extension is typically a single-storey glazed box within the depth limit, roofed either flat with a lantern or in a shallow mono-pitch, and finished in brick or render to match the host wall. On the borough's large late-victorian villas and terraces off the four tree-lined avenues, keeping the projection to the permitted-development figure often avoids an application entirely; where owners want the full 6 metres, the larger-home route succeeds when the neighbour-consultation period passes without a sustained objection.
The HMO Article 4 direction means sub-division and student conversions are managed tightly against clustering and amenity standards. We keep the extension inside the daylight splays, set any glazed roof below the first-floor cill, and retain the garden depth Hull City Council expects — so the back elevation answers the amenity case before a neighbour can lodge one. Two-storey rear extensions we draw with the 7-metre boundary gap and privacy screening resolved on the plan.
We draw rear extensions on every street in the borough. A few of the neighbourhoods where The Avenues back-of-house projects come up most often:
Rear extension drawings for Park Avenue's grandest of the four avenues, wide villas around the restored fountains — depth-checked, daylight-tested and drawn to Hull City Council's guidance.
Rear extension drawings for Westbourne Avenue's long avenue of gabled Victorian houses inside the conservation area — depth-checked, daylight-tested and drawn to Hull City Council's guidance.
Rear extension drawings for Marlborough Avenue's red-brick terraces and villas with heavy heritage control — depth-checked, daylight-tested and drawn to Hull City Council's guidance.
Rear extension drawings for Victoria Avenue's smaller avenue houses close to Princes Avenue — depth-checked, daylight-tested and drawn to Hull City Council's guidance.
Rear extension drawings for Princes Avenue's commercial and residential frontages in their own conservation area — depth-checked, daylight-tested and drawn to Hull City Council's guidance.
Rear extension drawings for Salisbury Street's tight Victorian terraces on the eastern edge of the Avenues — depth-checked, daylight-tested and drawn to Hull City Council's guidance.
How far you can extend at the back in The Avenues depends on your house type and the route you take. This is how the options compare.
| Route | Depth allowed | Consent needed | What Hull City Council checks |
|---|---|---|---|
| Standard permitted development | 3m terrace/semi · 4m detached | Lawful development certificate (optional) | Depth, 4m height, materials |
| Larger-home prior approval | 6m terrace/semi · 8m detached | Prior-approval notice + neighbour consultation | Neighbour objections on amenity |
| Full householder application | Beyond the above, or two-storey | Full planning permission | Daylight (45°/25°), bulk, garden retained |
| Conservation area | Case by case | Full planning permission | Character, roof form, boundary treatment |
The larger-home route is switched off on designated land — conservation areas such as Avenues and Pearson Park and Princes Avenue and Article 4 streets need a full application.
A fixed process built around how Hull City Council validates and decides rear-extension applications — most drawings are submission-ready within seven days of survey.
Send us your The Avenues postcode and house type. We confirm your conservation and Article 4 status, how much rear-extension depth you have under permitted development, and score your odds against live Hull City Council decisions.
We measure the original rear wall, floor and eaves levels, side and rear boundary distances and the neighbours' window positions — the numbers the depth limit and daylight splays depend on.
Chartered designers develop the single or two-storey rear extension to your brief, drawn inside the permitted-development limits or to Hull City Council's extension design guidance, with the daylight angles shown.
We submit the certificate, prior-approval notice or application, handle validation and case-officer queries, and revise the drawings free until Hull City Council issues its decision.
Often not. A single-storey rear extension up to 3 metres deep on a terrace or semi, or 4 metres on a detached house, and no higher than 4 metres, is usually permitted development in The Avenues. You will need to involve Hull City Council for anything deeper via the larger-home route, for two-storey rear extensions, and for any rear extension in a conservation area such as Avenues and Pearson Park and Princes Avenue, where those permitted-development rights fall away.
The larger-home extension scheme lets a single-storey rear extension reach 6 metres on a terrace or semi, or 8 metres on a detached house — double the standard allowance. It is not automatic: you submit a prior-approval notification to Hull City Council, neighbours are consulted, and if one objects on amenity grounds the council rules on it. It also does not apply on designated land such as The Avenues's conservation areas.
It is the daylight test Hull City Council applies to protect neighbours. Drawn on plan, a line at 45 degrees from the midpoint of the neighbour's nearest ground-floor window should not be crossed by your extension; a companion 25-degree line is checked in section. If the projection breaches it, the extension is likely to be shortened or refused, so we test and prove it on the drawings before submission. This applies to your The Avenues address specifically.
A two-storey rear extension almost always needs a full householder application to Hull City Council, as it sits outside permitted development on most homes. The council checks that it stays at least 7 metres from the rear boundary, does not overbear the neighbours and avoids new overlooking. We resolve the boundary gap, privacy and daylight on the plans so the application is decided on its merits. This applies to your The Avenues address specifically.
Frequently, yes. If the rear extension involves work to a shared wall, building up to the boundary, or excavating foundations near a neighbour's structure, the Party Wall etc. Act applies and you must serve notice — this is separate from Hull City Council's planning decision. We flag it early and can prepare the drawings a party-wall surveyor needs alongside the planning set. This applies to your The Avenues address specifically.
We price each The Avenues rear extension on its own footprint and send a fixed, no-obligation quote within one working day. It covers the full drawing pack with free revisions until Hull City Council approves, and we confirm at the outset whether your extension is permitted development, needs prior approval, or a full application. Call 020 7864 7245 to begin.
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Same fixed quotes, same fast drawings — wherever your project is.