Loft Conversion Specialists in Mayfair

As a guide, loft conversion in Mayfair (W1J and W1K) runs about £30,000–£42,000+ for a Velux or roof-light scheme, £42,000–£62,000+ for a dormer, and £55,000–£72,000++ for a hip-to-gable or mansard. UK guides put dormers around £40,000–£60,000 and mansards £50,000–£80,000, with London consistently at the top of those ranges. Buildaway fixes your figure in writing after survey.

A Mayfair loft conversion typically takes 6 to 10 weeks on site. A dormer runs nearer 6–7, a mansard or hip-to-gable 8–10 or more. That excludes the paperwork ahead of it: party-wall awards alone can take 4–8 weeks in W1J and W1K terraces and cannot be rushed. Buildaway starts that clock early.

Not always, but assume it might. Mayfair lofts run into conservation-area policy, listed-building consent and - for W1J and W1K flats - the lease. Buildaway resolves the Westminster City Council position and the freeholder position before design begins, because that answer determines the whole scheme.

Buildaway delivers Velux/rooflight, rear dormer, hip-to-gable and mansard conversions across Mayfair. Which suits your W1J and W1K home depends on roof pitch, headroom and what Westminster City Council will accept - a mansard that works on one street near Grosvenor Square and Mount Street may be refused on the next. Buildaway surveys before recommending.

Both, on one contract. For Mayfair clients Buildaway handles the drawings, the structural engineering, the consents and the build itself. That matters on W1J and W1K lofts more than most jobs, because the design and the structure are the same conversation.

Buildaway covers Mayfair and the wider W1J and W1K area year-round. Having converted lofts on this housing stock repeatedly, we know its constraints before the survey starts - and we are nearby long after handover.