Assure-Certified Oxfordshire Window & Door Installers

Based in Wantage, we deliver expert window and door installations, plus high-quality conservatories and home extensions, with free no-obligation quotes.

Get My Free Quote Call 07786 018091

Free no-obligation quote. Most enquiries are answered within 2 working hours.

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20+ Years
Experience
100+ Projects
Completed
Fully
Insured
Serving All
Oxfordshire

Assure Certified Installer

Official Assure Certification logo

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

Verify membership on Assure directory (Member #1823).

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 clear workmanship standards.

Windows & Doors in Wantage

Home Extensions

From single-storey additions to full wrap-around extensions, we manage your project from design to completion. We can provide practical guidance on planning requirements and direct you to the Planning Portal and local authority for formal decisions and 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 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

We provide a detailed written quote as quickly as possible, typically within 2-3 working days. This breaks down 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. We focus on quality craftsmanship and attention to detail 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, CJB Renovations LTD is your trusted partner for building and renovation projects across Oxfordshire.

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 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

Want similar results on your home?

Tell us what you need and we'll get back to arrange your free no-obligation quote.

Request Free Quote Call Craig: 07786 018091

Serving All of Oxfordshire

Based in Wantage, we carry out windows, doors, conservatories, and extensions across Oxfordshire and nearby towns.

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 centre 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 careful, standards-led fitting.

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, and Woodstock.

And surrounding villages and towns. If you're nearby and need builders, we can help.

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Frequently Asked Questions

What types of windows and doors do you install?

We install uPVC, composite, timber, and aluminium windows and doors. We help you choose the right option for security, energy efficiency, and style, then install to current Building Regulations with completion paperwork provided.

How much does a home extension cost in Oxfordshire?

Extension costs in Oxfordshire are typically around GBP 1,200 to GBP 2,000 per square metre, depending on size, structure, and finish level. After a site visit, we provide a clear written quote with a full cost breakdown and no obligation.

How long does a conservatory installation take?

Most conservatory projects take around 4 to 8 weeks once work begins, depending on design, groundwork, and specification. We confirm timings before you commit and keep you updated throughout the build.

Why choose CJB Renovations LTD for building work in Oxfordshire?

We are fully insured and Assure-certified, with local experience across Oxfordshire. You get clear quotes, tidy workmanship, regular updates, and one point of contact from survey through completion.

What areas do you serve?

We're based in Wantage and work across Oxfordshire, including Oxford, Abingdon, Didcot, Bicester, Kidlington, and surrounding towns and villages. If you're nearby, contact us for a free quote.

How quickly can you provide a quote?

For many jobs, we can provide an initial estimate within 24-48 hours. If a site visit is needed, we usually send a detailed written quote within 2-3 working days after the visit.

Speak to Craig

Call, email, or send the form for a free no-obligation quote.

Opening Hours

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

During opening hours, we usually respond the same working day.

Call Craig

07786 018091

Email Craig

[email protected]

Address

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

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