Back-of-house extension drawings for Sileby & Seagrave homes — the glazed kitchen-diner across the rear, drawn to Charnwood Borough Council's depth and daylight limits, delivered in days and revised free until your decision, with a free approval-odds check first.
Charnwood Borough Council granted 88% of the householder planning decisions it made in its latest published year — 1 point above the 87% England-wide householder average. Sileby & Seagrave contains Seagrave, Sileby conservation areas, so materials, fenestration and roof form are assessed against the appraisal, which is where a policy-literate drawing pack earns its keep. Its dominant 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. In conservation areas such as Seagrave and Sileby those rights are removed, so we confirm your exact address before a line is drawn. A validated householder application in Sileby & Seagrave is determined against an 8-week statutory target.
Seagrave (designated conservation area), Sileby (designated conservation area), Seagrave (civil parish within Sileby & Seagrave) and Sileby (civil parish within Sileby & Seagrave) — these are the Sileby & Seagrave pockets our drawings cover most. Heritage designations here include Seagrave and Sileby. Charnwood Borough Council weighs each proposal against Charnwood Borough Council's adopted local plan and its householder design guidance, where the 4,140 homes here are 12% 2000-2008, 12% 1973-1982, 10% 1965-1972, which is what sets the realistic roof and rear-projection options. On roofs the borough is trussed-rafter roofs typical of 2000s building and shallow trussed roofs typical of 1970s building, over 2000s houses and apartments (12% of 4,140 homes), 1970s and early-1980s houses (12%) and late-1960s and early-1970s houses (10%).
What is permitted in Sileby & Seagrave turns on designation first, so that is where we start: Seagrave (designated conservation area) and Sileby (designated conservation area). Inside those boundaries permitted development is curtailed and Charnwood Borough Council assesses materials, window detail and roof form against the area's own appraisal, so a scheme that would be waved through two streets away can need a full application here.
Beyond the designated areas, Sileby & Seagrave takes in Seagrave and Sileby. No Article 4 direction is recorded for Charnwood Borough Council, but Sileby & Seagrave's 2 conservation areas still limit permitted development on those streets.
On stock, Sileby & Seagrave is 2000s houses and apartments (12% of 4,140 homes), 1970s and early-1980s houses (12%) and late-1960s and early-1970s houses (10%) — which is why trussed-rafter roofs typical of 2000s building and shallow trussed roofs typical of 1970s building govern what a loft or rear projection can realistically be. Charnwood Borough Council decided 495 householder applications in the latest published year and granted 88%, with 72% issued inside the eight-week target. We draw to that record rather than to a national average.
The full build-period split for Sileby & Seagrave runs pre-1900 8% (320 homes), 1900-1918 3% (120 homes), 1919-1929 2% (100 homes), 1930-1939 7% (300 homes), 1945-1954 6% (260 homes), 1955-1964 8% (340 homes), 1965-1972 10% (400 homes), 1973-1982 12% (480 homes), 1983-1992 6% (250 homes), 1993-1999 1% (40 homes) and 2000-2008 12% (500 homes). That distribution is why pre-1900 detailing dominates the drawings here, and it is measured from council-tax records rather than assumed from the street name.
Charnwood Borough Council also decides for Birstall East & Wanlip, Forest Bradgate, Rothley Brook, South Charnwood, The Wolds and Wreake Valley, so a decision in Sileby & Seagrave sits inside a wider pattern of decisions we track across the same authority — useful when an officer cites a precedent from the next area over.
Published figures for Sileby & Seagrave and Charnwood Borough Council. These are the numbers that decide what is realistic on your street, so we work from them rather than from national averages.
| Measure | Sileby & Seagrave |
|---|---|
| Dwellings recorded | 4,140 |
| Built pre-1900 | 320 (8%) |
| Built 1900-1918 | 120 (3%) |
| Built 1919-1929 | 100 (2%) |
| Built 1930-1939 | 300 (7%) |
| Built 1945-1954 | 260 (6%) |
| Built 1955-1964 | 340 (8%) |
| Built 1965-1972 | 400 (10%) |
| Built 1973-1982 | 480 (12%) |
| Built 1983-1992 | 250 (6%) |
| Built 1993-1999 | 40 (1%) |
| Built 2000-2008 | 500 (12%) |
| Built before 1919 | 11% |
| Built 1919–1939 | 10% |
| Built 1945–2008 | 55% |
| Conservation areas in Sileby & Seagrave | 2 (Seagrave, Sileby) |
| Conservation areas district-wide | 39 |
| Article 4 directions recorded | 0 |
| Householder applications decided | 495 |
| Householder applications granted | 88% |
| Decided within 8 weeks | 72% |
Dwelling stock from VOA council-tax data at 31 March 2025; conservation-area and Article 4 counts from planning.data.gov.uk (MHCLG); decision figures are Charnwood Borough Council's own, from MHCLG live table PS2 for the year to 31 March 2026.
The rear extension is the workhorse of Sileby & Seagrave home improvement — it is how a dark back kitchen becomes an open family room facing the garden. Because the borough is built largely from 2000s houses and apartments (12% of 4,140 homes), 1970s and early-1980s houses (12%) and late-1960s and early-1970s houses (10%), most back walls sit close to a neighbour on at least one side, and that proximity, not the design, is what Charnwood Borough Council scrutinises. The council reads the proposal against Charnwood Borough Council's adopted local plan and its householder design guidance, 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. Sileby & Seagrave contains Seagrave, Sileby conservation areas, so materials, fenestration and roof form are assessed against the appraisal, so the rear elevation is composed around it rather than corrected after an objection.
Where the property sits in a conservation area — Seagrave and Sileby among Sileby & Seagrave's — the larger-home extension route is switched off and even a modest rear addition needs consent. No Article 4 direction is recorded for Charnwood Borough Council, but Sileby & Seagrave's 2 conservation areas still limit permitted development on those streets. We confirm the designation before the survey.
Many single-storey rear extensions in Sileby & Seagrave are permitted development and need no application. You will normally need to apply to Charnwood Borough 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 Charnwood Borough 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 Charnwood Borough Council's real householder decision record, taken from official planning statistics and refreshed as new data lands. Charnwood Borough Council granted 88% of its householder applications in the year to 31 March 2026, and Seagrave shapes what is approved here. 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 Seagrave, Sileby and Seagrave, 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 2000s houses and apartments (12% of 4,140 homes), 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 4,140 homes here are 12% 2000-2008, 12% 1973-1982, 10% 1965-1972, which is what sets the realistic roof and rear-projection options. We keep the extension inside the daylight splays, set any glazed roof below the first-floor cill, and retain the garden depth Charnwood Borough 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 Sileby & Seagrave back-of-house projects come up most often:
Rear extension drawings for Seagrave's designated conservation area — depth-checked, daylight-tested and drawn to Charnwood Borough Council's guidance.
Rear extension drawings for Sileby's designated conservation area — depth-checked, daylight-tested and drawn to Charnwood Borough Council's guidance.
Rear extension drawings for Seagrave's civil parish within Sileby & Seagrave — depth-checked, daylight-tested and drawn to Charnwood Borough Council's guidance.
Rear extension drawings for Sileby's civil parish within Sileby & Seagrave — depth-checked, daylight-tested and drawn to Charnwood Borough Council's guidance.
How far you can extend at the back in Sileby & Seagrave depends on your house type and the route you take. This is how the options compare.
| Route | Depth allowed | Consent needed | What Charnwood Borough 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 Seagrave and Sileby and Article 4 streets need a full application.
A fixed process built around how Charnwood Borough Council validates and decides rear-extension applications — most drawings are submission-ready within seven days of survey.
Send us your Sileby & Seagrave 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 Charnwood Borough 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 Charnwood Borough 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 Charnwood Borough 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 Sileby & Seagrave. You will need to involve Charnwood Borough 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 Seagrave and Sileby, 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 Charnwood Borough 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 Sileby & Seagrave's conservation areas.
It is the daylight test Charnwood Borough 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 Sileby & Seagrave address specifically.
A two-storey rear extension almost always needs a full householder application to Charnwood Borough 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 Sileby & Seagrave 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 Charnwood Borough 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 Sileby & Seagrave address specifically.
We price each Sileby & Seagrave 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 Charnwood Borough 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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