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House extension plans in Bisley — a glazed single-storey rear extension on a period home
Bisley · House Extension Drawings & Planning

House extension plans in Bisley

Single-storey, double-storey, rear and side extension drawings for Bisley homes — measured to Stroud District Council's design guidance, delivered in days and revised free until your decision, with a free approval-odds check before you commit.

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Bisley householder planning by the numbers

Stroud District Council granted 92% of the householder planning decisions it made in its latest published year — 5 points above the 87% England-wide householder average. Bisley contains Bisley, Eastcombe, Thames Severn Canal (Sapperton Section) Conservation Area conservation areas (Thames Severn Canal (Sapperton Section) Conservation Area designated 1992), so materials, fenestration and roof form are assessed against the appraisal, which is where a policy-literate drawing pack earns its keep. Its dominant Victorian (1837–1901) and postwar (1945–1970) housing stock sets the design brief on most streets.

Under Class B, a rear dormer stays permitted development up to 40m³ of added roof volume on a terrace or 50m³ on a semi-detached or detached house, while Class A allows a single-storey rear extension of 3m beyond the original rear wall on a terrace and 4m on a detached house before a full application is needed. In conservation areas such as Bisley, Eastcombe and Thames Severn Canal (Sapperton Section) Conservation Area those rights are removed, so we confirm your exact address before a line is drawn. A validated householder application in Bisley is determined against an 8-week statutory target.

Bisley (designated conservation area), Eastcombe (designated conservation area), Thames Severn Canal (Sapperton Section) (conservation area designated in 1992) and Bisley-with-Lypiatt (civil parish within Bisley) — these are the Bisley pockets our drawings cover most. Heritage designations here include Bisley, Eastcombe and Thames Severn Canal (Sapperton Section) Conservation Area. Stroud District Council weighs each proposal against Stroud District Council's adopted local plan and its householder design guidance, where the 1,020 homes here are 46% pre-1900, 11% 1965-1972, 8% 1955-1964, which is what sets the realistic roof and rear-projection options. On roofs the borough is steeply pitched slate roofs, valley gutters and party parapets typical of pre-1900 building and shallow-pitched roofs and integral garages typical of that period's building, over Victorian and earlier houses (46% of 1,020 homes), late-1960s and early-1970s houses (11%) and late-1950s and early-1960s houses (8%).

What actually constrains a project in Bisley

Bisley's designated heritage is specific, and it is the first thing we check against your address: Bisley (designated conservation area), Eastcombe (designated conservation area) and Thames Severn Canal (Sapperton Section) (conservation area designated in 1992). Inside those boundaries permitted development is curtailed and Stroud District 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, Bisley takes in Bisley-with-Lypiatt. No Article 4 direction is recorded for Stroud District Council, but Bisley's 3 conservation areas still limit permitted development on those streets.

On stock, Bisley is Victorian and earlier houses (46% of 1,020 homes), late-1960s and early-1970s houses (11%) and late-1950s and early-1960s houses (8%) — which is why steeply pitched slate roofs, valley gutters and party parapets typical of pre-1900 building and shallow-pitched roofs and integral garages typical of that period's building govern what a loft or rear projection can realistically be. Stroud District Council decided 537 householder applications in the latest published year and granted 92%, with 73% issued inside the eight-week target. Those are the numbers our drawings are prepared against.

The full build-period split for Bisley runs pre-1900 46% (470 homes), 1900-1918 2% (20 homes), 1930-1939 2% (20 homes), 1945-1954 5% (50 homes), 1955-1964 8% (80 homes), 1965-1972 11% (110 homes), 1973-1982 8% (80 homes), 1983-1992 3% (30 homes), 1993-1999 1% (10 homes) and 2000-2008 5% (50 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.

Stroud District Council also decides for Berkeley Vale, Coaley and Uley, Dursley, Painswick and Upton, Stroud Central, Chalford, Kingswood and Minchinhampton, so a decision in Bisley 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.

Bisley in numbers — housing stock and planning decisions

Published figures for Bisley and Stroud District Council. These are the numbers that decide what is realistic on your street, so we work from them rather than from national averages.

MeasureBisley
Dwellings recorded1,020
Built pre-1900470 (46%)
Built 1900-191820 (2%)
Built 1930-193920 (2%)
Built 1945-195450 (5%)
Built 1955-196480 (8%)
Built 1965-1972110 (11%)
Built 1973-198280 (8%)
Built 1983-199230 (3%)
Built 1993-199910 (1%)
Built 2000-200850 (5%)
Built before 191948%
Built 1919–19392%
Built 1945–200840%
Conservation areas in Bisley3 (Bisley, Eastcombe…)
Conservation areas district-wide41
Article 4 directions recorded0
Householder applications decided537
Householder applications granted92%
Decided within 8 weeks73%

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 Stroud District Council's own, from MHCLG live table PS2 for the year to 31 March 2026.

Extension plans built around Stroud District Council's rules

Bisley homes come in a handful of recurring shapes, and each one points to a different extension. The borough is built largely from Victorian and earlier houses (46% of 1,020 homes), late-1960s and early-1970s houses (11%) and late-1950s and early-1960s houses (8%), 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. Stroud District Council judges every one of them against Stroud District 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. Bisley contains Bisley, Eastcombe, Thames Severn Canal (Sapperton Section) Conservation Area conservation areas (Thames Severn Canal (Sapperton Section) Conservation Area designated 1992), 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.

Bisley also protects whole streets — Bisley, Eastcombe and Thames Severn Canal (Sapperton Section) Conservation Area among them. No Article 4 direction is recorded for Stroud District Council, but Bisley's 3 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.

Isometric house extension drawing for a Bisley home

Do I need planning permission to extend my house in Bisley?

Plenty of Bisley 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 Stroud District Council if any of these apply:

  • The single-storey rear extension is deeper than 3 metres on a terrace or semi, or 4 metres on a detached house (6m/8m needs prior approval under the larger-home scheme)
  • It is a two-storey or double-storey extension, or the rear extension is higher than 4 metres
  • A side extension is wider than half the original house, or more than one storey
  • Any part projects forward of the principal (front) elevation, or the extension covers more than half the garden
  • Your home is in a conservation area such as Bisley and Eastcombe, where the larger-home route and side extensions are not permitted development

Bisley extension approval rates — live from council data

Below is Stroud District Council's real householder decision record, drawn from official planning statistics and refreshed as new data lands. Stroud District Council granted 92% of its householder applications in the year to 31 March 2026, and Bisley 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.

92%householder applications approved in Stroud
87%national average — Stroud is 5 points above the national average

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Which extensions get approved in Bisley

Across Bisley, Eastcombe and Thames Severn Canal (Sapperton Section), 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 victorian and earlier houses (46% of 1,020 homes), a side-return infill frequently pairs with it to square off the plan; on wider late-1950s and early-1960s houses (8%), a two-storey side or rear extension can add a bedroom above without swallowing the garden.

The 1,020 homes here are 46% pre-1900, 11% 1965-1972, 8% 1955-1964, 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 Stroud District 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.

Single-storey rear extension opening onto the garden of a Bisley house

House extensions across Bisley

We draw extensions on every street in the borough. A few of the neighbourhoods where Bisley projects come up most often:

Bisley

Extension drawings for Bisley's designated conservation area — footprint-checked, daylight-tested and drawn to Stroud District Council's guidance.

Eastcombe

Extension drawings for Eastcombe's designated conservation area — footprint-checked, daylight-tested and drawn to Stroud District Council's guidance.

Thames Severn Canal (Sapperton Section)

Extension drawings for Thames Severn Canal (Sapperton Section)'s conservation area designated in 1992 — footprint-checked, daylight-tested and drawn to Stroud District Council's guidance.

Bisley-with-Lypiatt

Extension drawings for Bisley-with-Lypiatt's civil parish within Bisley — footprint-checked, daylight-tested and drawn to Stroud District Council's guidance.

Which extension suits your Bisley home?

The right extension in Bisley 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 typePermitted development?What it addsWhat Stroud District Council checks
Single-storey rearOften, within 3m/4m depth (6m/8m via prior approval)Bigger kitchen-diner across the backDepth, height, neighbour daylight (45°)
Side-return infillSometimes, if within width and height limitsSquares off an L-shaped ground floorWidth vs the original house, glazing to boundary
Two-storey rear/sideNo — full applicationExtra bedroom or bathroom aboveBulk, overlooking, 7m rear-boundary gap
Wraparound (rear + side)No — full applicationWhole-width open-plan ground floorCombined footprint and garden retained

Route depends on your street — conservation areas such as Bisley and Eastcombe and Article 4 directions can remove permitted-development rights.

Four steps to an approved Bisley extension

A fixed process built around how Stroud District Council validates and decides householder extension applications — most drawings are submission-ready within seven days of survey.

  1. 1

    Free approval check

    Tell us your Bisley 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 Stroud District Council decisions.

  2. 2

    Measured survey

    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.

  3. 3

    Extension design & drawings

    Chartered designers develop the single-storey, two-storey or side extension to your brief, drawn inside the permitted-development limits or to Stroud District Council's extension design guidance.

  4. 4

    Submission & follow-through

    We submit the certificate, prior-approval notice or application, manage validation and case-officer queries, and revise the drawings free until Stroud District Council issues its decision.

Frequently asked questions

Do I need planning permission to extend my house in Bisley?

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 Bisley you will need to apply to Stroud District 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 Bisley and Eastcombe.

How deep can a single-storey rear extension go in Bisley without planning permission?

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 Stroud District Council and a neighbour-consultation period, and it does not apply on designated land such as Bisley's conservation areas. We confirm which route your property qualifies for before drawing.

Can I build a double-storey extension in Bisley?

Two-storey and double-storey extensions almost always need a full householder application to Stroud District 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 Bisley address specifically.

How long does Stroud District Council take to decide an extension application?

A householder planning application in Bisley 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. Stroud District Council is the decision-maker.

Will my extension in Bisley need building regulations approval as well as planning?

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 Stroud District Council's building control or an approved inspector can sign the work off. This applies to your Bisley address specifically.

How much do extension plans in Bisley cost?

Every house and brief is different, so we price each Bisley extension individually and send a fixed, no-obligation quote back within one working day. It covers the full drawing pack with free revisions until Stroud District Council approves, and we tell you upfront whether your extension qualifies as permitted development. Call 020 7864 7245 to get started.

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House extension plans across Stroud

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