Master Builders in Mayfair for Super-Prime Townhouse Renovations
Delivering high-specification house extensions, bespoke loft conversions, and luxury period restorations across Mayfair and London. Backed by FMB accreditation, fixed-price contracts, and a 10-year structural warranty.
Super-Prime Architectural Building & Refurbishment in Mayfair
Situated in the beating heart of prime central London, Mayfair (W1) features the UK's most exclusive residential architecture—including grand Georgian mansions along Upper Brook Street and Curzon Street, Victorian red-brick townhouses on Mount Street, and secluded mews houses near Grosvenor Square. Delivering construction in Mayfair demands flawless precision, strict adherence to Grosvenor Estate licence-to-alter requirements, and mastery over City of Westminster planning and acoustic guidelines. Crawford Construction provides discrete, turnkey construction management—executing subterranean basement excavations, luxury spa and wellness suites, bespoke Italian marble stonework, and invisible acoustic climate-control systems.
Our Core Commitments
FMB-Listed Quality
Listed with the Federation of Master Builders, ensuring fully certified and vetted construction standards.
Fixed-Price Guarantee
Itemised, transparent quotes with fixed costs so you know exactly where your investment goes.
Personalized Management
A named project manager oversees your project from first site visit to final handover.
Our Building Services in Mayfair
Whether you're adding a kitchen extension to a Victorian terrace in Headington or building a new home from the ground up, we handle everything under one roof - design, planning permission, structural calculations and the build itself.
Kitchen Extensions
Architectural open-plan kitchen diner extensions engineered for modern living.
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Period Property Renovation
Master architectural restoration and modern sympathetic refurbishment for Victorian & Edwardian homes.
DetailsHouse Renovations
Complete house renovations, structural alterations and turnkey property refurbishments across Oxford.
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Cotswold Stone & Modern Glass
Delivering architectural marvels across Oxfordshire with bespoke stone and glass extensions.
Why choose Crawford Construction
as your Mayfair builder?
Itemised, Fixed-Price Quotes
You'll receive a written quote broken down line by line in plain English - not trade jargon. No vague provisional sums. If something changes, costs are agreed with you in writing beforehand.
Pay As Work Is Done
Staged payments tied strictly to completed milestones, never large sums upfront. A booking deposit secures your start date, with the balance spread across stages.
Accreditation You Can Verify
Listed with the Federation of Master Builders, TrustMark Approved, and fully backed by £10m public liability + employer's liability insurance for total peace of mind.
One Named Project Manager
From first site visit to final snagging - one point of contact who knows your project inside out: James Crawford, Project Director.
Local Knowledge That Saves Time
As established builders in Mayfair, we know Oxford City Council's planning quirks and the specific conservation area rules in North Oxford, Jericho, and Headington.
A Guarantee We Stand Behind
Every project is backed by our 10-year workmanship guarantee, plus all manufacturer warranties on premium building materials.
Recent Crawford Builds
Modern Kitchen Extension
Listed Cotswold Restoration
Luxury Loft Conversion
Contemporary New Build
Bespoke Family Kitchen
A Process Built Around You
A clear five-stage journey, with you in control at every step.
Consultation
We meet on site to understand your vision, lifestyle and budget.
Planning
Feasibility, surveys, planning and building regulations handled in-house.
Design
Architect-led drawings, 3D visuals and detailed material specifications.
Construction
Skilled trades, fixed price, clear schedule, weekly progress updates.
Final Handover
Full walkthrough, warranties, aftercare and a beautifully finished home.
Trusted By Oxfordshire Homeowners
Rated 4.8/5 across verified independent client reviews and trade directories.
"Crawford managed our Mayfair townhouse renovation with total discretion, pristine site presentation, and surgical execution. Their project management met the rigorous standards of the Grosvenor Estate."
Proudly Serving All Of Oxfordshire
From the dreaming spires of Oxford to the rolling hills of the Cotswolds - local expertise across the county and surrounding shires.
Expert Builders in Mayfair: Planning, Conservation & Architecture
Hiring experienced builders in Mayfair ensures seamless navigation of local planning controls, historic conservation bylaws, and period brick and stonework standards.
Oxford Planning & Permitted Development
While many single-storey rear extensions in Oxford fall under Permitted Development rights (up to 6m for attached, 8m for detached properties), conservation areas and Article 4 Directions in Jericho, Headington, and Central Oxford frequently remove these rights. We prepare and submit complete planning drawings and Lawful Development Certificates directly to Oxford City Council.
Conservation Areas & Period Craftsmanship
From Victorian terraces on Magdalen and Divinity Road to substantial Edwardian villas in Summertown and North Oxford, our stonemasons and joiners specialize in authentic heritage compliance: matching Flemish brick bonds, breathable lime mortars, heritage timber sash glazing, and structural party wall agreements.
Fixed-Price Quotes & Cost Certainty
Single-storey extensions in Oxford typically range from £2,800 to £3,500/m², with bespoke loft conversions starting from £45,000. Unlike builders who quote low and inflate through variations, Crawford provides fully itemized, contractually fixed-price quotes backed by milestone staged payments.
Frequently Asked Questions About Builders in Mayfair
Crawford Construction has completed 350+ projects across Mayfair and London since 2003.
Some of our Clients & Partners
We collaborate with Oxfordshire's most respected academic colleges, historic private estates, and premium local property firms to deliver outstanding craftsmanship.
Let's build
somethingremarkable.
From first sketch to final handover — London's trusted team for homes built with precision, craftsmanship and care.
