Single-storey, double-storey, rear and side extension drawings for Sileby & Seagrave homes — measured to Charnwood Borough Council's design guidance, delivered in days and revised free until your decision, with a free approval-odds check before you commit.
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.
Sileby & Seagrave homes come in a handful of recurring shapes, and each one points to a different extension. 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%), so a Victorian terrace usually wants a rear or side-return infill, while an interwar semi has room for a wider single-storey wrap or a two-storey side addition. Charnwood Borough Council judges every one of them against Charnwood Borough Council's adopted local plan and its householder design guidance, weighing footprint, height and the impact on the house next door before it looks at the elevations.
That is why the drawings decide the outcome. We set the extension depth against the permitted-development limits precisely, keep the eaves and ridge within the allowances, and plot the 45-degree daylight lines to the neighbours' windows so the case officer can see the amenity test is passed. Sileby & Seagrave contains Seagrave, Sileby conservation areas, so materials, fenestration and roof form are assessed against the appraisal, so we design around it from the first sketch rather than discover it at validation.
Sileby & Seagrave also protects whole streets — Seagrave and Sileby among them. 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 designated land the larger-home extension route and most side extensions stop being permitted development, so we confirm your address against those layers before drawing a line.
Plenty of Sileby & Seagrave extensions are permitted development and need no planning application — a single-storey rear extension within the depth and height limits is the common case. You will normally need to apply to Charnwood Borough Council if any of these apply:
We draw the footprint, the ridge and eaves heights and the neighbours' daylight on the page — the relationships Charnwood Borough Council's officers weigh first — and submit a validation-complete pack, whether that is a lawful development certificate, a prior-approval notification or a full householder application.
Below is Charnwood Borough Council's real householder decision record, drawn 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. A complete, policy-literate extension pack anticipates those pressure points before submission, which is why professionally drawn applications are decided faster and refused less often than DIY ones.
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 extension that lands most often is the single-storey rear addition — a glazed kitchen-diner across the back of the house, kept within the permitted-development depth or taken to a full application where the ground floor wants more. On the borough's 2000s houses and apartments (12% of 4,140 homes), a side-return infill frequently pairs with it to square off the plan; on wider late-1960s and early-1970s houses (10%), a two-storey side or rear extension can add a bedroom above without swallowing the garden.
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 size the extension to the amenity and daylight tests, match the roof and materials to the host house, and keep enough garden to satisfy Charnwood Borough Council's space standards — so the scheme answers the borough's questions before an objection can raise them. Where permitted-development rights are used up or removed, we prepare the householder application to the council's extension design guidance instead.
We draw extensions on every street in the borough. A few of the neighbourhoods where Sileby & Seagrave projects come up most often:
Extension drawings for Seagrave's designated conservation area — footprint-checked, daylight-tested and drawn to Charnwood Borough Council's guidance.
Extension drawings for Sileby's designated conservation area — footprint-checked, daylight-tested and drawn to Charnwood Borough Council's guidance.
Extension drawings for Seagrave's civil parish within Sileby & Seagrave — footprint-checked, daylight-tested and drawn to Charnwood Borough Council's guidance.
Extension drawings for Sileby's civil parish within Sileby & Seagrave — footprint-checked, daylight-tested and drawn to Charnwood Borough Council's guidance.
The right extension in Sileby & Seagrave depends on your house type and how much garden you can give up. This is how the main options compare on planning route and what they add.
| Extension type | Permitted development? | What it adds | What Charnwood Borough Council checks |
|---|---|---|---|
| Single-storey rear | Often, within 3m/4m depth (6m/8m via prior approval) | Bigger kitchen-diner across the back | Depth, height, neighbour daylight (45°) |
| Side-return infill | Sometimes, if within width and height limits | Squares off an L-shaped ground floor | Width vs the original house, glazing to boundary |
| Two-storey rear/side | No — full application | Extra bedroom or bathroom above | Bulk, overlooking, 7m rear-boundary gap |
| Wraparound (rear + side) | No — full application | Whole-width open-plan ground floor | Combined footprint and garden retained |
Route depends on your street — conservation areas such as Seagrave and Sileby and Article 4 directions can remove permitted-development rights.
A fixed process built around how Charnwood Borough Council validates and decides householder extension applications — most drawings are submission-ready within seven days of survey.
Tell us your Sileby & Seagrave postcode and house type. We confirm your conservation and Article 4 status, how much permitted-development depth you have left, and score your odds against live Charnwood Borough Council decisions.
We measure the existing footprint, floor and eaves levels, boundary distances and the neighbours' window positions — the numbers the depth limits and daylight tests depend on.
Chartered designers develop the single-storey, two-storey or side extension to your brief, drawn inside the permitted-development limits or to Charnwood Borough Council's extension design guidance.
We submit the certificate, prior-approval notice or application, manage validation and case-officer queries, and revise the drawings free until Charnwood Borough Council issues its decision.
Not always. 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 apply to Charnwood Borough Council for two-storey extensions, side extensions wider than half the house, anything forward of the front wall, deeper rear extensions under the larger-home prior-approval route, and any extension in a conservation area such as Seagrave and Sileby.
Standard permitted development allows 3 metres on a terraced or semi-detached house and 4 metres on a detached one. The larger-home extension scheme can double that to 6 or 8 metres, but it needs a prior-approval notification to Charnwood Borough Council and a neighbour-consultation period, and it does not apply on designated land such as Sileby & Seagrave's conservation areas. We confirm which route your property qualifies for before drawing.
Two-storey and double-storey extensions almost always need a full householder application to Charnwood Borough Council, because they fall outside permitted development on most homes. The council looks closely at bulk, overlooking of neighbours and the 7-metre gap a two-storey rear extension must keep from the rear boundary. We design to those tests and show the daylight and privacy angles on the drawings. This applies to your Sileby & Seagrave address specifically.
A householder planning application in Sileby & Seagrave runs to a statutory eight-week target, a larger-home prior-approval notification to around six weeks including the neighbour-consultation period, and a lawful development certificate to eight weeks. Incomplete submissions stall at validation, so we submit a complete pack and manage officer queries to keep the decision on schedule. Charnwood Borough Council is the decision-maker.
Yes — planning permission and building regulations are separate consents, and almost every extension needs both. Planning governs whether you can build it; building control governs how it is built, covering structure, insulation, drainage and fire safety. We prepare the building-regulations drawings alongside the planning set so Charnwood Borough Council's building control or an approved inspector can sign the work off. This applies to your Sileby & Seagrave address specifically.
Every house and brief is different, so we price each Sileby & Seagrave extension individually and send a fixed, no-obligation quote back within one working day. It covers the full drawing pack with free revisions until Charnwood Borough Council approves, and we tell you upfront whether your extension qualifies as permitted development. Call 020 7864 7245 to get started.
Answer five quick questions and get a free planning score for your exact address — instantly. Then, if you want the full picture, unlock the detailed analysis: your council's live approval rates, local precedents, constraints on your street and a step-by-step route to permission.
Same fixed quotes, same fast drawings — wherever your project is.