Back-of-house extension drawings for Lakenham homes — the glazed kitchen-diner across the rear, drawn to Norwich City Council's depth and daylight limits, delivered in days and revised free until your decision, with a free approval-odds check first.
Norwich City Council granted 93% of the householder planning decisions it made in its latest published year — 6 points above the 87% England-wide householder average. The elevated Bracondale villas enjoy long views over the city, so roof additions and upper extensions are read against that skyline, which is where a policy-literate drawing pack earns its keep. Its dominant Georgian (1714–1837), Victorian (1837–1901), Edwardian (1901–1910) and interwar (1918–1939) 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. In conservation areas such as Old Lakenham, Bracondale and Trowse Millgate those rights are removed, so we confirm your exact address before a line is drawn. A validated householder application in Lakenham is determined against an 8-week statutory target.
Old Lakenham (historic village core of cottages around the church and river), Bracondale (elevated street of substantial Georgian and Victorian villas), Trowse Millgate (estate-village cottages by the confluence of the Yare and Wensum), City Road (dense Victorian terraces linking the centre to Lakenham), Southwell Road (compact bay-fronted terraces on the southern slopes) and Hall Road (Edwardian and interwar housing running south from the city) — these are the Lakenham pockets our drawings cover most. Heritage designations here include Old Lakenham, Bracondale and Trowse Millgate. Norwich City Council weighs each proposal against the Greater Norwich Local Plan and the Norwich Development Management Policies, where the estate-village character of Trowse Millgate protects its unified cottages and boundary treatments in fine grain. Streets nearer the city and along Bracondale hold converted flats and maisonettes, which sit outside householder permitted-development rights.. On roofs the borough is pitched and gabled slate roofs on the terraces and steep pantiled roofs on the older cottages and villas, over Victorian and Edwardian terraces, grander villas along Bracondale and surviving village cottages at Old Lakenham and Trowse.
The rear extension is the workhorse of Lakenham home improvement — it is how a dark back kitchen becomes an open family room facing the garden. Because the borough is built largely from Victorian and Edwardian terraces, grander villas along Bracondale and surviving village cottages at Old Lakenham and Trowse, most back walls sit close to a neighbour on at least one side, and that proximity, not the design, is what Norwich City Council scrutinises. The council reads the proposal against the Greater Norwich Local Plan and the Norwich Development Management Policies, 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. The elevated Bracondale villas enjoy long views over the city, so roof additions and upper extensions are read against that skyline, so the rear elevation is composed around it rather than corrected after an objection.
Where the property sits in a conservation area — Old Lakenham, Bracondale and Trowse Millgate among Lakenham's — the larger-home extension route is switched off and even a modest rear addition needs consent. Lakenham sits south of the city-centre office-to-residential Article 4 area and has no HMO direction, so householder permitted-development rights largely survive — but the Old Lakenham, Bracondale and Trowse Millgate conservation areas remove the usual rights over their older cottages, villas and riverside frontages. We confirm the designation before the survey.
Many single-storey rear extensions in Lakenham are permitted development and need no application. You will normally need to apply to Norwich 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 Norwich 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 Norwich City Council's real householder decision record, taken from official planning statistics and refreshed as new data lands. Norwich approves around 93% of applications, but in Lakenham the Bracondale villa skyline and the Old Lakenham and Trowse village conservation areas shape the design of most extensions. 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 Old Lakenham, Bracondale and Trowse Millgate, 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 victorian and edwardian terraces, 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 estate-village character of Trowse Millgate protects its unified cottages and boundary treatments in fine grain. We keep the extension inside the daylight splays, set any glazed roof below the first-floor cill, and retain the garden depth Norwich 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 Lakenham back-of-house projects come up most often:
Rear extension drawings for Old Lakenham's historic village core of cottages around the church and river — depth-checked, daylight-tested and drawn to Norwich City Council's guidance.
Rear extension drawings for Bracondale's elevated street of substantial Georgian and Victorian villas — depth-checked, daylight-tested and drawn to Norwich City Council's guidance.
Rear extension drawings for Trowse Millgate's estate-village cottages by the confluence of the Yare and Wensum — depth-checked, daylight-tested and drawn to Norwich City Council's guidance.
Rear extension drawings for City Road's dense Victorian terraces linking the centre to Lakenham — depth-checked, daylight-tested and drawn to Norwich City Council's guidance.
Rear extension drawings for Southwell Road's compact bay-fronted terraces on the southern slopes — depth-checked, daylight-tested and drawn to Norwich City Council's guidance.
Rear extension drawings for Hall Road's Edwardian and interwar housing running south from the city — depth-checked, daylight-tested and drawn to Norwich City Council's guidance.
How far you can extend at the back in Lakenham depends on your house type and the route you take. This is how the options compare.
| Route | Depth allowed | Consent needed | What Norwich 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 Old Lakenham and Bracondale and Article 4 streets need a full application.
A fixed process built around how Norwich City Council validates and decides rear-extension applications — most drawings are submission-ready within seven days of survey.
Send us your Lakenham 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 Norwich 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 Norwich 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 Norwich 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 Lakenham. You will need to involve Norwich 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 Old Lakenham and Bracondale, 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 Norwich 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 Lakenham's conservation areas.
It is the daylight test Norwich 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 Lakenham address specifically.
A two-storey rear extension almost always needs a full householder application to Norwich 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 Lakenham 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 Norwich 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 Lakenham address specifically.
We price each Lakenham 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 Norwich 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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