Birmingham is not one search market. The city itself has districts like Edgbaston, Harborne, Moseley, Kings Heath and Sutton Coldfield, while the wider West Midlands adds Solihull, Wolverhampton, Dudley, Walsall and Coventry, each with its own centre and its own local Google results.
The Black Country towns identify strongly with themselves, so people there search by town rather than by the big city next door. Housing spans city flats, Jewellery Quarter conversions, 1930s semis and Black Country stock, and service pages need to describe the jobs each type creates.
Google.co.uk carries the searching, with Rightmove, Zoopla and OnTheMarket holding house-hunters. Property firms belong to an agent redress scheme and heating firms to Gas Safe, and both belong in the proof section of the page.