Trusted Oxfordshire Window & Door Installers

Wantage-based window and door specialists. Expert installation of uPVC windows, composite doors, conservatories, and home extensions. Professional and reliable.

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20+ Years
Experience
100+ Projects
Completed
4.9★ Rating
Serving All
Oxfordshire

Assure Certified Installer

Assure Certified

As Assure certified installers, we can sign off all window and door installations to building regulations, giving you complete peace of mind.

Our Expert Building Services

Windows, Doors and Conservatories

We install and replace all types of doors and windows, including uPVC, composite, and timber. As Assure certified installers, we can sign off all installations to building regulations. Energy-efficient solutions that improve security, aesthetics, and reduce heating costs. We also design and install beautiful conservatories in Victorian, Edwardian, and contemporary styles with professional installation guaranteed.

Home Extensions

From single-storey additions to full wrap-around extensions, we manage your project from design to completion. We can provide brief advice on planning requirements and direct you to the Planning Portal for formal applications. We specialise in creating beautiful, functional spaces that enhance your home's value and livability.

Conversions

Maximise your property's potential with expert conversion services. Our garage conversions create functional living spaces, home gyms, or workshops with proper insulation, electrics, and building regulation compliance. We also design and build stunning garden rooms - perfect for home offices, entertainment spaces, or guest accommodations. Whether you need additional living space or want to add value to your property, our conversion specialists deliver quality craftsmanship with full project management from design through completion.

General Building & Renovations

From patios and brickwork to roofing and complete home renovations, our general building work is second to none. We handle projects of all sizes with the same commitment to quality craftsmanship, reliability, and customer satisfaction.

How We Work

Our proven 4-step process ensures your building project runs smoothly from start to finish, with complete transparency and professionalism at every stage.

1

Initial Consultation

We visit your property in Oxfordshire to discuss your vision, assess the space, take measurements, and understand your budget. This consultation is completely free with no obligation. We'll answer all your questions and provide expert advice on design, planning permissions, and feasibility.

2

Detailed Quote

Within 2-3 days, we provide a comprehensive written quote breaking down all costs including materials, labour, and any additional services. We pride ourselves on transparency - no hidden fees, no surprises. The quote includes a detailed timeline and specification of work.

3

Professional Build

Our experienced team begins work with minimal disruption to your daily life. We maintain a clean, safe worksite, provide regular progress updates, and are always available to answer questions. Quality craftsmanship and attention to detail are guaranteed on every project.

4

Final Inspection

We conduct a thorough walkthrough with you to ensure everything meets your expectations and our high standards. We clean up completely, remove all waste, and provide you with all necessary documentation, warranties, and maintenance guidance for your new extension, windows, or conservatory.

Modern grey composite door installation with professional exterior lighting by CJB Renovations LTD in Wantage, Oxfordshire

Your Local Wantage Builders

Based in Wantage, Oxfordshire, CJB Renovations LTD is your trusted partner for all building and renovation projects throughout the county.

With years of experience in home extensions, window and door installations, conservatories, and general building work, we combine traditional craftsmanship with modern techniques to deliver exceptional results every time.

Why choose CJB Renovations? We are fully insured, Assure registered, and committed to professionalism, reliability, and customer satisfaction. From initial consultation to project completion, we ensure your vision becomes reality with minimal disruption and maximum quality.

Contact Us Today

What Our Customers Say

Don't just take our word for it. Here's what homeowners across Oxfordshire say about working with CJB Renovations LTD.

"Craig fitted new uPVC windows throughout our house. Professional job, tidy worker and cleaned up after himself. The windows look great and have made a real difference to the draughts. Would recommend."

SM

Sarah M.

Wantage

"Had our old front door and living room window replaced. They were on time, did a neat job and explained everything. Very happy with the composite door especially - much warmer now."

JD

John D.

Abingdon

"Had a new bay window installed for us. Took a couple of days but the finish is really good. Clearly experienced with windows. Competitive price too."

LT

Lisa T.

Didcot

Serving All of Oxfordshire

Based in Wantage, we're your trusted local builders proudly serving homes and businesses throughout Oxfordshire with professional building, renovation, and installation services.

Wantage

Our home base. We provide comprehensive building services including window installations, doors, home extensions, and conservatories throughout the local area.

Oxford

From historic city center properties to modern suburban homes, we handle all building work with expertise in both traditional and contemporary construction methods.

Abingdon

Specialist window fitters and door installers. We offer energy-efficient uPVC, composite, and timber installations with professional fitting guaranteed.

Didcot

General building work specialists. From patios and driveways to full home renovations, we deliver quality craftsmanship on every project, large or small.

Bicester

Window, door, and conservatory specialists. We design and build Victorian, Edwardian, and contemporary conservatories with professional installation throughout your project.

Kidlington

Window and door installations, home extensions, and complete renovation services. Our local knowledge and expertise ensure projects are completed to the highest standards.

We Also Serve

Witney • Banbury • Thame • Henley-on-Thames • Wallingford • Faringdon • Carterton • Grove • Chipping Norton • Woodstock

And all surrounding villages and towns across Oxfordshire. If you're in Oxfordshire and need builders, we can help.

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Frequently Asked Questions

What types of windows and doors do you install?

As experienced window fitters across Oxfordshire, we install uPVC windows and doors (excellent value, low maintenance, energy-efficient), composite doors (superior security, aesthetically appealing, highly durable), timber windows and doors (traditional appearance, sustainable, customizable), and aluminium frames (modern, slim profiles, maximum glazing). All our installations meet current Building Regulations for thermal efficiency and security standards. We provide A-rated energy efficiency as standard and offer a comprehensive guarantee on all installations.

How much does a home extension cost in Oxfordshire?

The cost of a home extension typically ranges from £1,200 to £2,000 per square metre, depending on the complexity, size, and materials used. Single-storey extensions generally cost between £20,000 and £50,000, while two-storey extensions can range from £40,000 to £100,000. At CJB Renovations LTD, we provide transparent, no-obligation quotes tailored to your specific project. Factors affecting cost include structural work, materials, and finishing standards.

How long does a conservatory installation take?

A typical conservatory installation across Oxfordshire takes between 4 to 8 weeks from start to finish. This includes 1-2 weeks for base and foundation work, 2-3 weeks for frame construction and glazing, and 1-2 weeks for finishing touches including electrics, flooring, and decoration. Victorian and Edwardian designs typically take 5-6 weeks, while bespoke contemporary designs may require 7-8 weeks. CJB Renovations LTD manages the entire construction process, ensuring minimal disruption to your home.

Why choose CJB Renovations LTD for building work in Oxfordshire?

CJB Renovations LTD is your trusted choice for building work throughout Oxfordshire because we are fully insured and Assure registered, providing complete peace of mind. We are local Wantage builders with extensive knowledge of the area and local building regulations. We offer transparent, competitive pricing with no hidden costs, maintaining high-quality craftsmanship on every project regardless of size. Our professional project management ensures minimal disruption to your daily life, and we have an excellent reputation built on customer satisfaction and quality work. We handle everything from initial consultation to final completion and cleanup.

What areas in Oxfordshire do you serve?

CJB Renovations LTD proudly serves all of Oxfordshire, with our base in Wantage. We regularly complete projects in Wantage, Oxford, Abingdon, Didcot, Bicester, Kidlington, Witney, Banbury, Thame, Henley-on-Thames, and surrounding villages. As local builders, we understand the area's unique architectural styles and the needs of homeowners. No project is too far - contact us today for a free quote.

How quickly can you provide a quote?

We aim to provide initial quotes within 48 hours of your enquiry. For straightforward projects like window replacements or standard extensions, we can often provide an estimate over the phone or via email on the same day. For more complex projects requiring a site visit, we'll arrange a convenient time to visit your property, take measurements, discuss your requirements, and provide a detailed written quote typically within 2-3 working days. All our quotes are free, with no obligation, and completely transparent with a full breakdown of costs.

Get in Touch

Get your free, no-obligation quote today. We serve all of Oxfordshire.

Opening Hours

Monday - Friday: 8:00 AM - 6:00 PM
Saturday: 9:00 AM - 2:00 PM
Sunday: Closed

We respond to enquiries within 2 hours during business hours

Call Us

07786 018091

Email Us

[email protected]

Address

CJB Renovations LTD
41 Hamfield, Wantage
Oxfordshire, OX12 9EQ

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