Single-storey, double-storey, rear and side extension drawings for Jewellery Quarter homes — measured to Birmingham City Council's design guidance, delivered in days and revised free until your decision, with a free approval-odds check before you commit.
Birmingham City Council granted 84% of the householder planning decisions it made in its latest published year — 3 points below the 87% England-wide householder average. The Jewellery Quarter conservation-area appraisal resists the loss of active manufacturing floorspace to residential use, protecting the working character, which is where a policy-literate drawing pack earns its keep. Its dominant Georgian (1714–1837) 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 Birmingham City Council needs a full application. Jewellery Quarter carries at least one Article 4 direction, and conservation areas including Jewellery Quarter, St Paul's Square and Key Hill and Warstone Lane Cemeteries remove those rights outright, so we confirm your exact address before a line is drawn. A validated householder application in Jewellery Quarter is determined against an 8-week statutory target.
St Paul's Square (Birmingham's only surviving Georgian square, framed by townhouses and workshops), Warstone Lane (workshop terraces around the tiered Church of England cemetery), Key Hill (the General Cemetery quarter with converted works and lofts), Vyse Street (the trade's retail spine of jewellers and the Museum of the Jewellery Quarter), Golden Square (a restored public square ringed by manufacturing frontages) and Hockley edge (larger former factories reworked as loft apartments) — these are the Jewellery Quarter pockets our drawings cover most. Heritage designations here include Jewellery Quarter, St Paul's Square and Key Hill and Warstone Lane Cemeteries. Birmingham City Council weighs each proposal against Birmingham Development Plan (2017) and the Birmingham Design Guide / relevant SPDs, where workshop frontages, cart entries and industrial fenestration are protected in detail, constraining conversion and roof additions. Almost all housing here is apartments in converted workshops or new blocks, none of which hold householder permitted-development rights.. On roofs the borough is pitched and parapet-fronted industrial roofs on the workshop terraces and flat and set-back roofs on modern apartment conversions, over 19th-century jewellery workshops and warehouses converted to apartments, Georgian townhouses around St Paul's Square and new-build apartment blocks on former industrial plots.
Jewellery Quarter homes come in a handful of recurring shapes, and each one points to a different extension. The borough is built largely from 19th-century jewellery workshops and warehouses converted to apartments, Georgian townhouses around St Paul's Square and new-build apartment blocks on former industrial plots, 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. Birmingham City Council judges every one of them against Birmingham Development Plan (2017) and the Birmingham Design Guide / relevant SPDs, 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. The Jewellery Quarter conservation-area appraisal resists the loss of active manufacturing floorspace to residential use, protecting the working character, so we design around it from the first sketch rather than discover it at validation.
Jewellery Quarter also protects whole streets — Jewellery Quarter, St Paul's Square and Key Hill and Warstone Lane Cemeteries among them. The Jewellery Quarter conservation area — which absorbed the earlier St Paul's Square and Key Hill conservation areas in 2000 — protects the largest surviving group of Victorian jewellery workshops in Britain, so external alterations and change-of-use are tightly controlled alongside the city-wide HMO Article 4 direction. 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 Jewellery Quarter 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 Birmingham City Council if any of these apply:
We draw the footprint, the ridge and eaves heights and the neighbours' daylight on the page — the relationships Birmingham City 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 Birmingham City Council's real householder decision record, drawn from official planning statistics and refreshed as new data lands. Birmingham grants a high share of householder applications overall, but the Jewellery Quarter is dominated by conservation-led conversion and change-of-use decisions rather than typical suburban extensions. 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 St Paul's Square, Warstone Lane and Key Hill, 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 19th-century jewellery workshops and warehouses converted to apartments, a side-return infill frequently pairs with it to square off the plan; on wider new-build apartment blocks on former industrial plots, a two-storey side or rear extension can add a bedroom above without swallowing the garden.
Workshop frontages, cart entries and industrial fenestration are protected in detail, constraining conversion and roof additions. 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 Birmingham City 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 Jewellery Quarter projects come up most often:
Extension drawings for St Paul's Square's Birmingham's only surviving Georgian square, framed by townhouses and workshops — footprint-checked, daylight-tested and drawn to Birmingham City Council's guidance.
Extension drawings for Warstone Lane's workshop terraces around the tiered Church of England cemetery — footprint-checked, daylight-tested and drawn to Birmingham City Council's guidance.
Extension drawings for Key Hill's the General Cemetery quarter with converted works and lofts — footprint-checked, daylight-tested and drawn to Birmingham City Council's guidance.
Extension drawings for Vyse Street's the trade's retail spine of jewellers and the Museum of the Jewellery Quarter — footprint-checked, daylight-tested and drawn to Birmingham City Council's guidance.
Extension drawings for Golden Square's a restored public square ringed by manufacturing frontages — footprint-checked, daylight-tested and drawn to Birmingham City Council's guidance.
Extension drawings for Hockley edge's larger former factories reworked as loft apartments — footprint-checked, daylight-tested and drawn to Birmingham City Council's guidance.
The right extension in Jewellery Quarter 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 Birmingham City 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 Jewellery Quarter and St Paul's Square and Article 4 directions can remove permitted-development rights.
A fixed process built around how Birmingham City Council validates and decides householder extension applications — most drawings are submission-ready within seven days of survey.
Tell us your Jewellery Quarter 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 Birmingham City 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 Birmingham City 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 Birmingham City 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 Jewellery Quarter you will need to apply to Birmingham City 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 Jewellery Quarter and St Paul's Square.
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 Birmingham City Council and a neighbour-consultation period, and it does not apply on designated land such as Jewellery Quarter'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 Birmingham City 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 Jewellery Quarter address specifically.
A householder planning application in Jewellery Quarter 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. Birmingham City 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 Birmingham City Council's building control or an approved inspector can sign the work off. This applies to your Jewellery Quarter address specifically.
Every house and brief is different, so we price each Jewellery Quarter extension individually and send a fixed, no-obligation quote back within one working day. It covers the full drawing pack with free revisions until Birmingham City 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.