# Crawford Construction > Crawford Construction Ltd is a premier UK design and build contractor specializing in luxury residential home extensions, bespoke loft and basement conversions, Grade II listed building conservation, and full-scale architectural renovations across Oxfordshire, London, the Cotswolds, and the Home Counties. Crawford Construction provides an integrated turnkey construction service combining architectural design, structural engineering, planning permission management, and master craftsmanship. With over 25 years of craft mastery and more than 350 completed projects, Crawford Construction holds £10,000,000 in public and employer liability insurance and is accredited by the Federation of Master Builders (FMB) and the Guild of Master Craftsmen. ## Core Services - [Home Extensions](https://crawfordconstruction.co.uk/services/extensions): Premium single-storey, double-storey, and wrap-around home extensions engineered for seamless flow and maximum property value across Oxfordshire and London. - [Loft Conversions](https://crawfordconstruction.co.uk/services/loft-conversions): Bespoke dormer, mansard, hip-to-gable, and Velux loft conversions transforming underutilised attic spaces into master suites and home offices. - [Basement Conversions](https://crawfordconstruction.co.uk/services/basement): Structural underpinning, cavity drainage waterproofing (BS 8102), and luxury basement excavations for home cinemas, gyms, and subterranean living. - [Listed Building & Heritage Restoration](https://crawfordconstruction.co.uk/services/listed-building): Heritage-sensitive conservation, traditional lime mortar masonry, and timber framing for Grade I, Grade II*, and Grade II listed properties. - [Design & Build Contractor](https://crawfordconstruction.co.uk/services/design-build): Turnkey architectural design and build management from conceptual sketches, planning submissions, and structural calculations to handover. - [Bespoke Kitchen Design](https://crawfordconstruction.co.uk/services/bespoke-kitchens): Custom handmade cabinetry, premium quartz/marble worktops, and architectural open-plan kitchen-living spaces. - [Smart Home Automation](https://crawfordconstruction.co.uk/services/smart-home): Intelligent architectural lighting, climate automation, multi-room audio, smart security, and enterprise-grade network infrastructure. - [Architectural Interior Design](https://crawfordconstruction.co.uk/services/interior-design): High-end spatial planning, bespoke joinery, tailored lighting schemes, and luxury material curation. - [Architectural Joinery & Cabinetry](https://crawfordconstruction.co.uk/services/joinery): Master craft bench joinery producing bespoke staircases, fitted wardrobes, wall panelling, and heritage sash windows. - [New Build Construction](https://crawfordconstruction.co.uk/services/new-build): Architect-led bespoke detached homes engineered to high-efficiency, sustainable Building Regulations (Part L compliant). - [Controlled Demolition & Structural Alterations](https://crawfordconstruction.co.uk/services/demolition): Precision structural knock-throughs, steel beam installations (RSJs), load-bearing wall removals, and safe site clearances. - [Insurance Reinstatement & Structural Repairs](https://crawfordconstruction.co.uk/services/insurance-work): Accredited insurance repair partner providing structural reinstatement for fire, flood, storm damage, and subsidence. ## Calculators & Planning Guides - [Extension Cost Calculator](https://crawfordconstruction.co.uk/extension-cost-calculator): Interactive estimation tool calculating real-time construction costs for single, double-storey, and wrap-around extensions in the UK. - [Loft Conversion Cost Calculator](https://crawfordconstruction.co.uk/loft-conversion-cost-calculator): Instant budget estimator for dormer, mansard, hip-to-gable, and rooflight loft conversions. - [Extend vs Move Calculator](https://crawfordconstruction.co.uk/extend-vs-move-calculator): Financial feasibility tool comparing stamp duty, agent fees, and moving costs against home extension investments. - [Loft Suitability Checker](https://crawfordconstruction.co.uk/loft-suitability-checker): Architectural assessment tool checking minimum 2.2m ridge height, roof pitch, and structural feasibility. - [Oxford Planning Permission Guide](https://crawfordconstruction.co.uk/planning-permission-oxford): Comprehensive guide to Oxford City Council and Oxfordshire planning regulations, permitted development rights, and conservation areas. - [House Extension Cost Guide Oxford](https://crawfordconstruction.co.uk/house-extension-cost-oxford): Detailed cost per square metre (£/m²) breakdown and pricing benchmarks for home extensions in Oxford. ## Featured Portfolio & Case Studies - [St Michael at the North Gate Conservation](https://crawfordconstruction.co.uk/projects/st-michael-at-the-north-gate): Heritage conservation and structural repair of Oxford's oldest surviving building (Saxon Tower, circa 1040 AD) using traditional lime mortar and stone masonry. - [Tackley Place, Oxford](https://crawfordconstruction.co.uk/projects/tackley-place): Contemporary architect-designed new build delivering exceptional thermal efficiency and modern luxury. - [Bardwell Road Luxury Refurbishment](https://crawfordconstruction.co.uk/projects/bardwell-road-refurbishment): Complete architectural refurbishment and restoration of an expansive Victorian villa in North Oxford. - [Upland Park Road Extension](https://crawfordconstruction.co.uk/projects/upland-park-extension): High-spec open-plan rear kitchen extension with frameless structural glazing and architectural patio connection. - [Victorian Terrace Extension](https://crawfordconstruction.co.uk/projects/victorian-terrace-extension): Seamless side-return extension and internal reconfiguration on James Street, Oxford. - [Canal Street Loft Conversion, Jericho](https://crawfordconstruction.co.uk/projects/canal-street-loft-conversion): Custom dormer conversion adding an ensuite master bedroom within a sensitive Victorian conservation area. - [Campden Street Residence, Kensington](https://crawfordconstruction.co.uk/projects/campden-street-residence): Luxury townhouse renovation in prime central London combining classical mouldings with contemporary smart home automation. - [Full Project Portfolio Archive](https://crawfordconstruction.co.uk/projects): Comprehensive archive of over 24 completed residential extensions, conversions, and renovations. ## Regional Service Hubs & Authority Coverage (31 Locations) Crawford Construction operates dedicated regional service hubs with in-depth knowledge of local planning authorities, conservation areas, and building control departments: - [Oxford City Centre](https://oxford-city-centre.crawfordconstruction.co.uk/): Conservation area renovations and extensions under Oxford City Council. - [Summertown](https://summertown.crawfordconstruction.co.uk/): Luxury Victorian and Edwardian home extensions and conversions in North Oxford. - [Jericho](https://jericho.crawfordconstruction.co.uk/): Victorian terrace renovations, loft conversions, and conservation area approvals. - [Central North Oxford](https://central-north-oxford.crawfordconstruction.co.uk/): Substantial heritage villa extensions, basement fit-outs, and architect-led restorations. - [Headington](https://headington.crawfordconstruction.co.uk/): 1930s and post-war property extensions, wrap-arounds, and loft conversions. - [Cowley](https://cowley.crawfordconstruction.co.uk/): Terraced property expansions, side-infill extensions, and residential renovations. - [Iffley Fields](https://iffley-fields.crawfordconstruction.co.uk/): Sensitive renovations in picturesque conservation areas south of the city. - [Marston](https://marston.crawfordconstruction.co.uk/): Family home extensions, garage conversions, and open-plan kitchen living remodels. - [Woodstock](https://woodstock.crawfordconstruction.co.uk/): Cotswold stone properties and heritage renovations near Blenheim Palace. - [Witney](https://witney.crawfordconstruction.co.uk/): West Oxfordshire market town extensions, barn conversions, and new home builds. - [Bicester](https://bicester.crawfordconstruction.co.uk/): High-efficiency modern extensions and eco-friendly new builds under Cherwell District Council. - [Abingdon](https://abingdon.crawfordconstruction.co.uk/): Historic riverside town home extensions, loft conversions, and kitchen expansions under Vale of White Horse. - [Didcot](https://didcot.crawfordconstruction.co.uk/): Modern family property conversions and garden room extensions in South Oxfordshire. - [Kidlington](https://kidlington.crawfordconstruction.co.uk/): Substantial residential remodels and semi-detached property extensions. - [Thame](https://thame.crawfordconstruction.co.uk/): Period cottage renovations and contemporary glazed kitchen extensions. - [Banbury](https://banbury.crawfordconstruction.co.uk/): North Oxfordshire residential builds, renovations, and multi-storey extensions. - [Chipping Norton](https://chipping-norton.crawfordconstruction.co.uk/): Cotswolds heritage stone restorations and bespoke barn conversions. - [Carterton](https://carterton.crawfordconstruction.co.uk/): Single and two-storey home extensions and garage conversions. - [Mayfair](https://mayfair.crawfordconstruction.co.uk/): Prime Central London luxury townhouse refurbishment, basement excavation, and interior architecture. - [Kensington](https://kensington.crawfordconstruction.co.uk/): High-end residential refits, rear extensions, and bespoke joinery under RBKC planning. - [Chelsea](https://chelsea.crawfordconstruction.co.uk/): Prestigious residential renovations and conservation work in the Royal Borough. - [Notting Hill](https://notting-hill.crawfordconstruction.co.uk/): Architectural townhouse restorations, smart home integrations, and bespoke interiors. - [Henley-on-Thames](https://henley-on-thames.crawfordconstruction.co.uk/): Luxury riverside residences, listed building restoration, and timber-framed outbuildings. - [Cotswolds](https://cotswolds.crawfordconstruction.co.uk/): Traditional dry stone, Cotswold rubble-stone, and lime mortar conservation builds. - [Burford](https://burford.crawfordconstruction.co.uk/): Gateway to the Cotswolds historic property renovations and traditional craftsmanship. - [Oxfordshire](https://oxfordshire.crawfordconstruction.co.uk/): County-wide residential construction, design & build, and project management. - [Buckinghamshire](https://buckinghamshire.crawfordconstruction.co.uk/): High-end extensions, country house renovations, and barn conversions. - [Berkshire](https://berkshire.crawfordconstruction.co.uk/): Premium Thames Valley residential design, build, and home expansions. - [Warwickshire](https://warwickshire.crawfordconstruction.co.uk/): Heritage building conservation and architect-designed new homes. - [Northamptonshire](https://northamptonshire.crawfordconstruction.co.uk/): Country estate works, stable conversions, and large-scale extensions. - [Wiltshire](https://wiltshire.crawfordconstruction.co.uk/): Rural property renovations, thatched roof works, and stone extensions. ## Company, Accreditations & Contact - [About Crawford Construction](https://crawfordconstruction.co.uk/about): Company background, team philosophy, master craftsmanship, and client commitments. - [The Crawford Workflow](https://crawfordconstruction.co.uk/how-we-work): 5-stage project methodology: Consultation, Planning, Architectural Design, Construction, and Final Handover. - [Service Areas Directory](https://crawfordconstruction.co.uk/service-areas): Comprehensive geographic guide to our UK operating territories. - [Request a Free Quote / Consultation](https://crawfordconstruction.co.uk/contact): Free on-site survey and fully itemised fixed-price quotation. - **Office Address**: 115 Walton Street, Oxford, OX2 6EB, United Kingdom - **Telephone**: +44 186 555 4333 - **Mobile**: +44 7736 845 087 - **Email**: office@crawfordconstruction.co.uk - **Accreditations**: Federation of Master Builders (FMB), Guild of Master Craftsmen, TrustMark Government Endorsed Quality, Gas Safe Registered, NICEIC Approved. - **Insurance**: £10,000,000 Public & Employers' Liability Insurance; 10-Year Insurance-Backed Structural Warranties. ## Optional - [Full Architectural & Technical Knowledge Base (llms-full.txt)](https://crawfordconstruction.co.uk/llms-full.txt): Comprehensive technical specifications, cost estimation benchmarks, planning regulation parameters, and building control guidelines for LLM ingestion.