Single-storey, double-storey, rear and side extension drawings for Trafford homes — measured to Trafford Council's design guidance, delivered in days and revised free until your decision, with a free approval-odds check before you commit.
Trafford Council granted 89% of the householder planning decisions it made in its latest published year — 2 points above the 87% England-wide householder average. A broad Green Belt covers much of the south and west, where extensions are tested on openness rather than ordinary householder policy, which is where a policy-literate drawing pack earns its keep. Its dominant Victorian (1837–1901), Edwardian (1901–1910), interwar (1918–1939) and postwar (1945–1970) housing stock sets the design brief on most streets.
Class A and Class B set the thresholds — a rear dormer to 40m³ on a terrace or 50m³ on a semi or detached, and a single-storey rear extension to 3m on a terrace or 4m on a detached house — beyond which Trafford Council needs a full application. Trafford carries at least one Article 4 direction, and conservation areas including Bowdon, Devisdale and Altrincham remove those rights outright, so we confirm your exact address before a line is drawn. A validated householder application in Trafford is determined against an 8-week statutory target.
Altrincham (a market town with Victorian villas and the Downtown conservation area), Bowdon (large tree-lined Victorian villas in an extensive conservation area), Hale (affluent detached and semi-detached houses on generous plots), Sale (interwar semi-detached suburbia around Ashton upon Mersey), Stretford (Victorian and Edwardian terraces near the city fringe) and Urmston (interwar and postwar semi-detached estates) — these are the Trafford pockets our drawings cover most. Heritage designations here include Bowdon, Devisdale, Altrincham, Hale, Dunham Massey and Ashton upon Mersey. Trafford Council weighs each proposal against the Trafford Local Plan: Core Strategy (2012), the emerging new Trafford Local Plan and the Places for Everyone joint Greater Manchester plan, where the extensive Bowdon, Hale and Devisdale conservation areas hold rear outbuildings, rooflights and replacement windows to matching materials and detailing. Subdivided villas and apartment conversions are common around Altrincham and Sale, and flats carry no householder permitted-development rights.. On roofs the borough is steep gabled slate roofs on the Victorian villas and hipped roofs on the interwar semis, over large Victorian and Edwardian villas across Bowdon, Hale and Altrincham, interwar semi-detached houses in Sale, Timperley and Urmston and Victorian and Edwardian terraces around Stretford and Old Trafford.
Trafford homes come in a handful of recurring shapes, and each one points to a different extension. The borough is built largely from large Victorian and Edwardian villas across Bowdon, Hale and Altrincham, interwar semi-detached houses in Sale, Timperley and Urmston and Victorian and Edwardian terraces around Stretford and Old Trafford, 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. Trafford Council judges every one of them against the Trafford Local Plan: Core Strategy (2012), the emerging new Trafford Local Plan and the Places for Everyone joint Greater Manchester plan, 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. A broad Green Belt covers much of the south and west, where extensions are tested on openness rather than ordinary householder policy, so we design around it from the first sketch rather than discover it at validation.
Trafford also protects whole streets — Bowdon, Devisdale, Altrincham, Hale, Dunham Massey and Ashton upon Mersey among them. Trafford introduced a borough-wide Article 4 direction on 21 December 2017 removing the permitted C3-to-C4 right, so an HMO anywhere in Altrincham, Sale, Stretford or Urmston needs full planning permission, and its twenty-two conservation areas across the affluent south — Bowdon, Hale and the Devisdale among them — remove further permitted-development rights. 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 Trafford 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 Trafford Council if any of these apply:
We draw the footprint, the ridge and eaves heights and the neighbours' daylight on the page — the relationships Trafford 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 Trafford Council's real householder decision record, drawn from official planning statistics and refreshed as new data lands. Trafford grants a high share of householder applications, with south-Trafford Green Belt and the affluent conservation areas of Bowdon and Hale the constraints that shape most designs. 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 Altrincham, Bowdon and Hale, 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 large victorian and edwardian villas across bowdon, hale and altrincham, a side-return infill frequently pairs with it to square off the plan; on wider victorian and edwardian terraces around stretford and old trafford, a two-storey side or rear extension can add a bedroom above without swallowing the garden.
The extensive Bowdon, Hale and Devisdale conservation areas hold rear outbuildings, rooflights and replacement windows to matching materials and detailing. 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 Trafford 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 Trafford projects come up most often:
Extension drawings for Altrincham's a market town with Victorian villas and the Downtown conservation area — footprint-checked, daylight-tested and drawn to Trafford Council's guidance.
Extension drawings for Bowdon's large tree-lined Victorian villas in an extensive conservation area — footprint-checked, daylight-tested and drawn to Trafford Council's guidance.
Extension drawings for Hale's affluent detached and semi-detached houses on generous plots — footprint-checked, daylight-tested and drawn to Trafford Council's guidance.
Extension drawings for Sale's interwar semi-detached suburbia around Ashton upon Mersey — footprint-checked, daylight-tested and drawn to Trafford Council's guidance.
Extension drawings for Stretford's Victorian and Edwardian terraces near the city fringe — footprint-checked, daylight-tested and drawn to Trafford Council's guidance.
Extension drawings for Urmston's interwar and postwar semi-detached estates — footprint-checked, daylight-tested and drawn to Trafford Council's guidance.
The right extension in Trafford 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 Trafford 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 Bowdon and Devisdale and Article 4 directions can remove permitted-development rights.
A fixed process built around how Trafford Council validates and decides householder extension applications — most drawings are submission-ready within seven days of survey.
Tell us your Trafford 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 Trafford 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 Trafford 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 Trafford 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 Trafford you will need to apply to Trafford 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 Bowdon and Devisdale.
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 Trafford Council and a neighbour-consultation period, and it does not apply on designated land such as Trafford'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 Trafford 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.
A householder planning application in Trafford 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. Trafford 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 Trafford Council's building control or an approved inspector can sign the work off.
Every house and brief is different, so we price each Trafford extension individually and send a fixed, no-obligation quote back within one working day. It covers the full drawing pack with free revisions until Trafford 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.