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West Midlands

Planning permission in Birmingham

What homeowners in Birmingham need to know about planning permission before starting an extension, loft conversion or major renovation in West Midlands.

Local context — Birmingham

Council
Birmingham City Council
Open planning portal →
Cost premium
-8% vs UK average (West Midlands labour rates)
Typical extension price
A 25 m² single-storey rear extension in Birmingham typically runs £48,000-£72,000 (standard to premium, 2026). Mansard loft conversions in Edgbaston, Moseley and Harborne run £65,000-£95,000.
Building Control
Birmingham Building Consultancy is the council's in-house BC service. Booking lead time is 3-5 working days; competition from private Approved Inspectors (LABC, MD Insurance) is heavy in B13, B14, B17 and B30.
Conservation & Article 4
Birmingham has 30+ conservation areas including the Jewellery Quarter, Edgbaston, Moseley and Bournville. Article 4 directions in Bournville cover external materials, windows and rooflights — even PD-sized extensions need consent.
Local quirks that move the price
Cellars and Victorian sub-floors in Moseley/Kings Heath frequently require tanking specs adding £4-9k. Tree Preservation Orders are dense across south Birmingham (B13-B17) — always check before quoting rear excavation. Bay-fronted terraces in Selly Park typically need a Party Wall Award on both sides.
High-demand areas in Birmingham
MoseleyHarborneKings HeathEdgbastonSutton Coldfield

When you need planning permission in Birmingham

Most single-storey rear extensions in Birmingham fall under Permitted Development (PD), provided they stay within size, height and material limits. Two-storey extensions, side-return extensions on terraces, and any work in a conservation area or to a listed building typically require a full planning application from your local authority in West Midlands.

Permitted Development limits used in Birmingham

For detached homes, rear extensions can usually go up to 8 m deep (single-storey) without planning. For terraced and semi-detached, the limit is 6 m. Maximum eaves height is 3 m within 2 m of the boundary, and side extensions must be single-storey, no more than 4 m high, and no wider than half the original house. Always file a Prior Approval / Lawful Development Certificate to lock the rights in writing.

Conservation areas and listed buildings

Birmingham has several conservation areas where Permitted Development rights are restricted or removed entirely (Article 4 directions). Listed buildings always require Listed Building Consent in addition to planning. Check the local authority's planning portal before quoting builders.

Typical timelines & fees

A householder planning application takes 8 weeks for a decision. Fees are £258 for England householder applications (2026). Lawful Development Certificates cost £129. Budget 4–6 weeks extra for drawings and pre-application advice if needed.

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FAQs about planning permission in Birmingham

Do I need planning permission for a loft conversion in Birmingham?

Most rear dormer loft conversions in Birmingham are Permitted Development if the dormer is under 40 m³ (terraced) or 50 m³ (semi/detached) and doesn't sit on the front roof slope. Mansard conversions and anything in a conservation area need full planning.

How much does a planning consultant cost in Birmingham?

Typical fees are £600–£1,800 for a householder application including drawings. Pre-application advice from the council adds £150–£400 but often saves weeks on contentious schemes.

Can my builder submit the planning application?

Usually no — you need a designer or architect to prepare scaled drawings and the application. Some builders have an in-house designer, but the application is filed in the homeowner's name.

More Birmingham guides

Build timeline in BirminghamVetting builders in BirminghamSave on renovation in Birmingham

Planning permission in other UK cities

LondonCroydonEalingEnfieldBromleyBarnet

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