Architects in Birmingham

What do Birmingham's planning figures say about home projects?

Birmingham had an estimated 1,176,960 residents in mid-2025 (ONS), and its planning team handles a large volume of small domestic schemes. In the four quarters to 30 June 2026 it decided 1,971 householder applications, and 86.6% were granted (MHCLG, table PS2). Put the other way, roughly 13 in every 100 were not granted, so approval is the usual outcome but not a formality.

Speed looks reasonable too. About 87% of those decisions were made inside eight weeks or within an extension of time the applicant had agreed. That second clause matters: an agreed extension counts as on time, so a slow case can still be recorded as in time. Treat the figure as a guide to the team's workload, not a promise about your own application.

How should you ask Birmingham City Council before you apply?

The council runs a paid pre-application service. For 2026 to 2027 its fee table lists householder advice for a single home that is not listed at £166.80 for written advice only, and £332.40 if you want a meeting. Both figures include VAT. The council's own page adds that advice does not guarantee approval, because officers may not know every issue at that stage and cannot take account of comments made after you apply (page read 14 October 2026).

Before an application is accepted it has to carry the national documents plus anything on the council's Local Information Requirements, a list whose current edition is dated December 2021. It says an application missing required information is invalid and will not be processed until the information arrives, and that the public are consulted for 21 days once the case is validated. For a household extension the extras that tend to matter are a heritage statement where the work affects a listed building or conservation area, a tree survey where roots or canopies are close, and a flood risk assessment in flood zones 2 and 3.

Search existing decisions on the council's online planning register. Reading the approved extensions on your own street is the cheapest research there is, and it shows how the case officer treated the same neighbours.

Which Birmingham homes sit in conservation areas or Article 4 areas?

The council's conservation area page says there are 29 in the city, and names the Jewellery Quarter and Bournville Village among them. Its page on Article 4 Directions lists eleven where the council has removed some permitted development rights: Austin Village, Bournville Village, part of Edgbaston, Greenfield Road, High Street Sutton Coldfield, Moor Pool in Harborne, Moseley, Old Yardley, Selly Park, Selly Park Avenues and St Agnes. In those areas, the council says, even minor alterations such as a porch, replacement windows or re-roofing will need planning permission.

Two practical details come from the council's page on work in a conservation area. All trees in conservation areas are protected, and in places such as Bournville or the Calthorpe Estate in Edgbaston you may also need the estate manager's permission on top of the council's. That estate consent is a separate step, so ask about it early. For each of the eleven Article 4 areas the council publishes the direction itself as a download; read the one for your street, not just the headline list.

What does Birmingham's housing stock mean for an extension or loft?

VOA figures for 31 March 2026 put 19.4% of the city's Council Tax homes before 1919 and a further 26.8% between 1919 and 1939, which together is 46.2% built before the Second World War. Another 22.6% date from 1945 to 1972. That spread explains why a single set of assumptions does not work across the city.

• Pre-1919 terraces and villas often have solid brick walls, narrow rear wings and tight neighbours, so the rear extension question is mostly about daylight to the next-door kitchen.
• Inter-war semis are the largest band. They are typically wider, with hipped roofs, and that roof shape is exactly what the council's guidance is cautious about when a loft conversion tempts owners to convert to a gable.
• Post-war houses from 1945 to 1972 tend to have simpler roofs and cavity walls, which usually makes structural survey work more straightforward, though each house still needs its own check.

With an average price of £234,257 in July 2026 (HM Land Registry), the value uplift from extra space is also a local judgement. An architect or a local agent can tell you what a fourth bedroom adds on your road; this page cannot.

What is the Birmingham Design Guide and why does it matter to you?

The Birmingham Design Guide is a supplementary planning document that the council says it adopted on 6 September 2022. Extensions are covered in the Healthy Living and Working Places City Manual, in City Notes LW-4 and LW-16 to LW-19. Several of its rules are specific enough to shape a drawing before any application is made.

• The 45 Degree Code is applied mainly to household extensions, including conservatories. A line at 45 degrees is taken from the nearest habitable window of the neighbour, and an extension must not break it.
• Side extensions are expected to stay subordinate: the ground floor set back by at least 500mm from the building line, and upper floors by at least 1,000mm, with a lower ridge.
• Dormers must not dominate the roof, and changing a hipped roof to a gable is described as unsupported unless the applicant shows there is no character harm or the result is exemplary.
• In the Green Belt an extension may be acceptable if it does not add more than 50% or 200 square metres of habitable floor area, whichever is greater.

Each service page for Birmingham looks at these rules for one type of project: extensions, loft conversions and planning applications. For the national position, start with our guide to finding your local planning authority.

How do you choose an architect for a Birmingham project?

1. Check the practice on the ARB register, which is the legal register of architects in the UK.
2. Ask which Birmingham addresses or streets they have drawn for, and whether the scheme needed the 45 Degree Code or an Article 4 check.
3. Ask who will submit and chase the application, and whether pre-application advice is in the quote.
4. Request written quotes for the same scope from at least two practices and compare what is excluded.
5. Find out whether building regulations drawings and party wall notices are in or out of the fee.

Our national guide to extensions explains how the approval routes differ, and the planning permission blog post covers the national permitted development limits.