Master Builders in Northamptonshire for Stone Homes & Extensions
Delivering high-specification house extensions, bespoke loft conversions, and luxury period restorations across Northamptonshire. Backed by FMB accreditation, fixed-price contracts, and a 10-year structural warranty.
Ironstone Building & Architectural Home Renovations in Northamptonshire
Adjoining northern Oxfordshire, Northamptonshire—particularly West Northamptonshire covering historic settlements such as Brackley, Towcester, Silverstone, and Daventry—is celebrated for its distinctive honey and tawny-gold ironstone architecture ('gingerbread' stone). From picturesque rural village cottages to grand Georgian farmsteads and modern country developments, building here requires nuanced material selection and structural finesse. Crawford Construction serves homeowners across South and West Northamptonshire, delivering single and double-storey kitchen extensions, traditional stone barn conversions, and structural renovations. Working under West Northamptonshire Council guidelines, we source authentic local ironstone, execute lime mortaring, and install high-performance energy-saving building envelopes.
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 Northamptonshire
As a full-service construction company in Northamptonshire and vetted Oxford building contractors, we manage everything under one roof—architectural design, planning permission, structural engineering calculations, and master craft construction across Oxfordshire.
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 Northamptonshire 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 Northamptonshire, 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 completed an extension on our Brackley home. Matching the local ironstone was critical, and their stonemasons matched the colour and coursing flawlessly."
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 Northamptonshire: Planning, Conservation & Architecture
Appointing accredited Oxford building contractors and an experienced builder in Northamptonshire ensures seamless navigation of local planning controls, historic conservation bylaws, and Thames Water build-over 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 Northamptonshire
Crawford Construction has completed 350+ projects across Northamptonshire 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 — Northamptonshire's trusted team for homes built with precision, craftsmanship and care.
