

L-Shaped Dormer Loft Conversion
L-shaped rear dormer creating a principal bedroom suite with ensuite and dressing room in Hampstead NW3.
View full case studyEstablished 2008 · 20+ years of combined experience · Fully insured to £2m · 4.9★ from 42+ verified reviews · Serving Kensington, Chelsea, Mayfair, Belgravia, Knightsbridge, Notting Hill, Hampstead and prime Central & West London.
Vine Construction is a family-run firm of luxury London builders specialising in the discreet, high-specification renovation of period townhouses, mews properties and prime residential estates across the capital. Since 2008 we have delivered complex home extensions, loft conversions, basement conversions and full period property restorations for owners of Grade II listed homes, conservation-area properties and estate-managed leaseholds including Grosvenor, Cadogan, Portman and Howard de Walden.
Our teams combine traditional trades — lime plastering, timber joinery, lead work, stone masonry and traditional sash window restoration — with modern building science: airtightness detailing, MVHR, underfloor heating and heritage-appropriate secondary glazing for acoustic and thermal upgrades that preserve historic character. Every project is led by a dedicated contracts manager, delivered under a JCT contract, and covered by £2m public liability and £10m employer's liability insurance.
We work across the most demanding postcodes in the capital, coordinating with local conservation officers, estate surveyors and heritage architects to deliver renovations that respect neighbourhood character.
Our portfolio documents ten flagship renovations completed across Central London, each with detailed scope, timeline, challenge and solution notes:
Long-form guides written by our contracts managers and heritage specialists:
Vine Construction is a fully insured contractor with £2m public liability, £10m employer's liability and contract works cover to £5m. We hold CSCS-carded trades, Gas Safe registered engineers and NICEIC-approved electricians, and we work regularly with heritage architects, conservation officers, and estate surveyors. Every completed project is backed by a written 12-month workmanship warranty in addition to standard manufacturer guarantees.
Most single-storey rear extensions take 14–20 weeks on site once planning and Party Wall matters are resolved. Larger wrap-around and basement projects range from 6 to 14 months.
Yes — a significant portion of our workload is Grade II listed and conservation-area properties in Kensington, Chelsea, Belgravia and Mayfair. See our period property restoration page.
Yes, we carry £2m public liability, £10m employer's liability and project-specific contract works cover.
Absolutely — we regularly work as principal contractor alongside leading London architects and design studios.
To discuss your project in confidence, call 020 7060 1579, WhatsApp +44 7853 322555, or email info@vineconstruction.com. Book online via our contact page or request a complimentary site survey.

Professional loft conversion services to maximize your home's potential. Create additional bedrooms, offices, or living spaces in your existing roof space.
Expert service with full insurance coverage and quality guarantee.
Expert service with full insurance coverage and quality guarantee.
Expert service with full insurance coverage and quality guarantee.
Expert service with full insurance coverage and quality guarantee.
Expert service with full insurance coverage and quality guarantee.
Expert service with full insurance coverage and quality guarantee.
Expert service with full insurance coverage and quality guarantee.
Expert service with full insurance coverage and quality guarantee.
Proof of Work
Real London projects delivered by our team — see the transformation, scope, and outcome for each.


L-shaped rear dormer creating a principal bedroom suite with ensuite and dressing room in Hampstead NW3.
View full case studyCommon questions on planning, party wall and programme for London loft conversions.