I founded Mayfair Studio to make architectural services more accessible to London homeowners. Too many good extension projects stall at the planning stage — either because the process feels opaque, costs spiral beyond what was quoted, or homeowners don't know their permitted development rights.
Mayfair Studio combines architectural design with planning expertise, covering rear extensions, loft conversions, side returns, and basement projects across all London boroughs. We've completed 80+ projects, from straightforward permitted development extensions in outer boroughs to complex listed building applications in conservation areas.
The free AI planning assistant on the homepage came from a frustration I kept hearing: homeowners spending hours on council websites or paying for consultations just to find out whether their project needed planning permission at all. That check should take two minutes, not two weeks.
Areas of expertise
- Rear and side return extensions
- Loft conversions (Velux, dormer, mansard)
- Basement and lower ground floor extensions
- Planning permission and prior approval applications
- Permitted development rights assessments
- Conservation area and listed building applications
- Party wall matters
- Building regulations and structural coordination
Writing and resources
I write detailed guides on London extensions, planning rules, and construction costs — all based on real project data. The goal is to give homeowners the same information their architect has, so they can make better decisions earlier in the process.
Browse all articlesGet in touch
If you have a project in mind, the fastest way to get started is the free planning check on the homepage. For everything else, reach out directly.