Architectural drawings in SW1X

SW1X primarily covers Knightsbridge / Belgravia in Westminster. It also touches Kensington and Chelsea.

Decisions for SW1X are made by Westminster City Council. Standard Permitted Development rules apply for most rear extensions and loft conversions on terraced and semi-detached houses, unless the property is in a conservation area, is listed, or sits under an Article 4 Direction. Article 4 in Westminster: Yes.

Fixed fees: Planning drawings from £840 (Essentials) or £1,750 (Complete). Loft from £1,225. Mansard from £1,575. Building regs from £950. We do not charge hourly. Free site survey across all SW1X addresses.

From first call to planning decision: typically 12–14 weeks. Site survey week 1, design weeks 2–3, validation 1–2 weeks, statutory 8-week determination. Westminster City Council timelines align with the national norm.

Knightsbridge / Belgravia in SW1X is characterised by the housing stock of Westminster — broadly grand georgian and regency terraces in belgravia and pimlico.