Dormer, hip-to-gable and mansard loft conversion drawings for Harborne homes — prepared to Birmingham City Council's design guidance, delivered in days and revised free until your decision lands, with a free approval-odds score first.
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 Moor Pool conservation-area appraisal protects the estate's cottage detailing, hedges and communal greens against incremental change, which is where a policy-literate drawing pack earns its keep. Its dominant Victorian (1837–1901), Edwardian (1901–1910) and interwar (1918–1939) 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. Harborne carries at least one Article 4 direction, and conservation areas including Harborne Old Village and Moor Pool remove those rights outright, so we confirm your exact address before a line is drawn. A validated householder application in Harborne is determined against an 8-week statutory target.
Harborne Old Village (the historic High Street core with its conservation area), Moor Pool (John Sutton Nettlefold's 1908 garden suburb of cottages around a village hall and greens), High Street (Victorian terraces and shopfronts along the main spine), Court Oak (interwar semis on the western fringe towards Quinton), Bearwood edge (dense Edwardian terraces bordering Smethwick) and Metchley (1930s semis near the university and hospital campus) — these are the Harborne pockets our drawings cover most. Heritage designations here include Harborne Old Village and Moor Pool. Birmingham City Council weighs each proposal against Birmingham Development Plan (2017) and the Birmingham Design Guide / relevant SPDs, where Harborne's proximity to the university keeps HMO pressure high, so C3-to-C4 conversions are tested against the 10%-within-100m concentration policy. Converted flats are common in the larger Edwardian houses near the High Street, and none carry householder permitted-development rights.. On roofs the borough is gabled roofs on the terraces and Moor Pool cottages and hipped roofs on the interwar semis, over Victorian and Edwardian terraces around the High Street, Arts-and-Crafts cottages on the Moor Pool estate and interwar semi-detached houses on the outer streets.
Harborne's roofs set the brief. The borough is built largely from Victorian and Edwardian terraces around the High Street, Arts-and-Crafts cottages on the Moor Pool estate and interwar semi-detached houses on the outer streets, and its lofts sit under gabled roofs on the terraces and Moor Pool cottages and hipped roofs on the interwar semis — the geometry that decides whether a rear dormer, a hip-to-gable or a mansard gives you the headroom you want. Birmingham City Council assesses loft proposals against Birmingham Development Plan (2017) and the Birmingham Design Guide / relevant SPDs, and its case officers read each roof against the pair next door and the wider street before they read the plans.
That makes drawing quality decisive. We measure ridge and eaves heights, roof pitch and the existing stair, calculate the added volume against the permitted-development limits exactly, and show the workings on the drawings so Birmingham City Council can verify them. The Moor Pool conservation-area appraisal protects the estate's cottage detailing, hedges and communal greens against incremental change, so we resolve it on the page rather than leave it for the case officer to raise.
Harborne also carries protected streets — Harborne Old Village and Moor Pool among them. The Moor Pool estate — an early Arts-and-Crafts garden suburb — carries tight conservation controls, and Birmingham's city-wide Article 4 direction removes the permitted right to convert family homes to small HMOs across this popular student-and-professional district. We check your address against those designations before a line is drawn.
Many Harborne loft conversions proceed without planning permission — a rear dormer within the permitted-development volume limits (40 cubic metres on a terrace, 50 on a semi or detached house) is usually lawful. You will normally need a full application to Birmingham City Council if any of these apply:
We draw the roof line, the ridge height and the neighbour's daylight on the page — the relationships Birmingham City Council's officers check first — and submit a validation-complete pack, whether that is a lawful development certificate or a full householder application.
Below is Birmingham City Council's real householder decision record, pulled from official planning statistics and updated as new data lands. Birmingham grants a high share of householder applications overall, with Harborne's Moor Pool controls and heavy HMO demand the recurring constraints on change. Professionally prepared loft drawings anticipate those pressure points before submission, which is why complete, policy-literate packs are decided faster and refused less often than DIY applications.
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 Harborne Old Village, Moor Pool and High Street, the recurring loft is the rear dormer — a box across the back roof slope that turns a cramped attic into a full-height double bedroom and en-suite. On gabled roofs on the terraces and Moor Pool cottages, that is usually the most efficient use of the roof; where the stock is hipped roofs on the interwar semis, a hip-to-gable followed by a rear dormer unlocks far more space, though it needs a full application.
Harborne's proximity to the university keeps HMO pressure high, so C3-to-C4 conversions are tested against the 10%-within-100m concentration policy. We draw the dormer inside the volume allowance, keep the flat-roof build-up below the ridge, and set the face back from the eaves as the rules require — so the pack answers Birmingham City Council's questions before they are asked. Where permitted-development rights are exhausted or removed, we prepare a householder application composed to the borough's roof-alteration guidance instead.
We draw loft conversions on every street in the borough. A few of the neighbourhoods where Harborne roofs come up most often:
Loft conversion drawings for Harborne Old Village's the historic High Street core with its conservation area — measured, volume-checked and drawn to Birmingham City Council's guidance.
Loft conversion drawings for Moor Pool's John Sutton Nettlefold's 1908 garden suburb of cottages around a village hall and greens — measured, volume-checked and drawn to Birmingham City Council's guidance.
Loft conversion drawings for High Street's Victorian terraces and shopfronts along the main spine — measured, volume-checked and drawn to Birmingham City Council's guidance.
Loft conversion drawings for Court Oak's interwar semis on the western fringe towards Quinton — measured, volume-checked and drawn to Birmingham City Council's guidance.
Loft conversion drawings for Bearwood edge's dense Edwardian terraces bordering Smethwick — measured, volume-checked and drawn to Birmingham City Council's guidance.
Loft conversion drawings for Metchley's 1930s semis near the university and hospital campus — measured, volume-checked and drawn to Birmingham City Council's guidance.
The right loft in Harborne depends on your roof. This is how the main types compare on planning route and the space they add.
| Loft type | Permitted development? | Space & headroom | What Birmingham City Council checks |
|---|---|---|---|
| Rear dormer | Usually yes, within volume limits | Full-height double room at the back | Volume, set-back from eaves, ridge height |
| Hip-to-gable | No — full application | Extends the whole side of the roof | Roof bulk and the symmetry of the pair |
| Mansard | No — full application | Maximum floor area across the roof | Street character, especially in conservation areas |
| Rooflights only | Usually yes (Class C) | Light and headroom, no extra footprint | Whether rooflights sit within the existing slope |
Route depends on your street — conservation areas such as Harborne Old Village and Moor Pool and Article 4 directions can remove permitted-development rights.
A fixed process built around how Birmingham City Council validates and decides householder loft applications — most drawings are submission-ready within seven days of survey.
Tell us your Harborne postcode and roof type. We confirm your conservation and Article 4 status, how much permitted-development volume you have left, and score your odds against live Birmingham City Council decisions.
We measure ridge and eaves heights, roof pitch, joist levels and the existing stair — the numbers the volume calculation and head heights depend on.
Chartered designers develop the dormer, hip-to-gable or mansard to your brief, drawn inside the Class B limits or to Birmingham City Council's roof-alteration guidance.
We submit the certificate or application, manage validation and case-officer queries, and revise the drawings free until Birmingham City Council issues its decision.
Often not. A rear dormer within 40 cubic metres on a terrace, or 50 on a semi-detached or detached house, set back from the eaves and no higher than the ridge, is usually permitted development. In Harborne the main exceptions are hip-to-gable conversions, dormers visible from the highway, and homes in conservation areas such as Harborne Old Village and Moor Pool or on streets with an Article 4 direction. Birmingham City Council is the decision-maker.
Generally no. In conservation areas including Harborne Old Village and Moor Pool, Class B permitted-development rights for lofts are removed, so a rear dormer that would be lawful elsewhere needs a full application to Birmingham City Council. The Moor Pool estate — an early Arts-and-Crafts garden suburb — carries tight conservation controls, and Birmingham's city-wide Article 4 direction removes the permitted right to convert family homes to small HMOs across this popular student-and-professional district. We check your exact address before drawing.
On gabled roofs on the terraces and Moor Pool cottages, common across Harborne, a rear dormer is usually the most efficient conversion and often permitted development. Where the roof is hipped roofs on the interwar semis, a hip-to-gable followed by a rear dormer gains far more usable space but needs planning permission. Our survey confirms which your roof supports before we draw. Birmingham City Council is the decision-maker.
A householder planning application in Harborne runs to a statutory eight-week target, and a lawful development certificate to eight weeks as well, though validation can add time if the pack is incomplete. We submit validation-complete drawings and manage case-officer queries to keep the decision on track. Birmingham City Council is the decision-maker.
If your dormer is permitted development, a lawful development certificate from Birmingham City Council is council-stamped proof of that — worth having, because every buyer's solicitor will ask for it when you sell. We prepare and submit the certificate application with the same drawing pack. This applies to your Harborne address specifically.
Every roof is different, so we quote each Harborne project individually — a fixed, no-obligation price back within one working day. The quote covers the full drawing pack with free revisions until Birmingham City Council approves, and we tell you upfront whether your loft qualifies as permitted development. Call 020 7864 7245 to start.
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.