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Welcome to CJX Construction

Building Excellence.
Creating Lasting Value.

From concept to completion, CJX Construction delivers exceptional residential and commercial construction with uncompromising attention to quality, detail and craftsmanship.

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A CJX Construction project under way
About CJX Construction

Construction Built Around Quality

At CJX Construction, we believe exceptional buildings begin with exceptional standards. We combine skilled workmanship, careful planning and attention to detail to deliver spaces that are functional, beautiful and built for the future.

Every project is led by an experienced site manager, priced transparently and delivered against a programme you can hold us to.
12+

Years of Experience

Building across London and the South East

168+

Projects Completed

Residential, commercial and renovation

98%

Client Satisfaction

Would recommend us to others

74%

Repeat & Referred Work

Of projects come from past clients

Discover Our Story
Our Expertise

Construction Services
Designed Around Your Vision

Whether you are building a family home, extending a property or fitting out a commercial space, we bring the same standard of craft and management to every project.

Project Management

End-to-end management of design, consultants, contractors and programme, with one person accountable for the outcome.

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House Extensions

Single and double storey extensions, wrap-arounds and loft conversions that feel original to the house.

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Renovation & Refurbishment

Sympathetic renovation of period and modern properties, bringing structure, services and finish up to today's standards.

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New Builds

Ground-up construction from foundations to final finish, built to modern energy and airtightness standards.

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Commercial Construction

Offices, retail and hospitality builds and fit-outs delivered on programme and with minimum disruption to trading.

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Residential Construction

Complete construction solutions for high-quality homes designed around modern lifestyles.

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CJX Construction craftsmanship on site
12+ Years of Experience
Why CJX Construction?

Built On Trust.
Driven By Quality.

Clients return to us because the work is right, the programme holds, and they always know where their project stands.

  • 01

    Exceptional Craftsmanship

    Time-served trades and a finish that holds up to close inspection, long after handover.

  • 02

    Transparent Communication

    Itemised pricing, weekly progress updates and a single point of contact throughout.

  • 03

    Experienced Professionals

    Site managers, joiners and specialists who have worked together on projects for years.

  • 04

    Attention To Detail

    The junctions, tolerances and finishes that separate a good build from an excellent one.

  • 05

    Reliable Project Delivery

    A realistic programme agreed up front, and the site management to keep it on track.

  • 06

    Quality Materials

    Specified for durability and performance, sourced from suppliers we have used for years.

Our Process

From Vision To Completion

A clear, five-stage route from first conversation to the day you get your keys back.

01

Consultation

We visit the site, understand your requirements, ideas, budget and expectations.

02

Planning

We prepare the construction strategy, programme, design requirements and detailed costings.

03

Construction

Our trades bring the project to life using quality materials and proven workmanship.

04

Quality Inspection

Every stage is signed off against our own checks and the relevant building regulations.

05

Handover

The finished project is cleaned, snagged and handed over with warranties and certificates.

Our Standard

Building Spaces
That Stand The Test Of Time

Explore Our Work
Testimonials

What Our Clients Say

The measure of a construction company is what its clients say once the scaffolding comes down.

We interviewed four builders and CJX were the only ones who talked us through what could go wrong rather than just telling us what we wanted to hear. Eleven months later the house was finished, the final account was within a whisker of the original quote, and we knew exactly where things stood every single week.

Eleanor Whitfield

New Build · Richmond, Surrey

Refurbishing four floors while two floors carried on trading was always going to be the difficult part. We did not receive a single escalated tenant complaint in seven months. That is not luck - that is planning and site discipline.

Marcus Ashford

Commercial Refurbishment · Holborn, London

We had two children under five and stayed in the house the whole way through. The team was clean, quiet where they could be, and honest when they could not. Our kitchen was out of action for exactly the four weeks they said it would be.

Priya Raghunathan

House Extension · Highgate, London

A Grade II listed house with damp, failed lintels and a conservation officer to satisfy. CJX handled the whole thing, including the parts of it that were genuinely unpleasant, and the finished house looks like it was always meant to be that way.

James Okonkwo

Listed Building Restoration · Islington, London

Working in a managed block with a two-hour daily lift slot would defeat most contractors. They planned around it rather than complaining about it. We have already instructed them on our second property.

Sophie Lindqvist

Interior Refurbishment · Belgravia, London

As a small developer, cost certainty is everything. CJX gave me a fixed price that held, delivered both units to EPC A, and got them reserved off-plan. I have three more sites and they are pricing all of them.

David Merrivale

Residential Development · Sevenoaks, Kent

Planning Your Next Project?

Let's discuss how CJX Construction can bring your vision to life.

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Insight From Our Team

Practical guidance on planning, budgeting and building well.