We are Cortec.

Find out why we are more than just a building contractor.

We choose to specialise so that we can add real value to every project we undertake. For everyone involved.

Our business has been built around gaining experience and knowledge in medium-value projects in
the £250,000 to £2.5m range across Surrey, SW London, West Sussex, Hampshire and Berkshire.

We focus solely on:


residential projects

Our roots lie in high-quality works in high value homes. We work with you every step of the way and undertake large extensions, refurbishments and extensive remodelling through to new-builds.


Healthcare and care
home projects

Our clients include Elizabeth Finn Homes, Queen Elizabeth’s Foundation for Disabled People, The Grange Centre, The Royal Alfred Seafarers’ Society, The Future Care Group, and others.


Office to residential

We have successfully delivered office to apartment conversion projects since 2012 with a proven capacity to handle multiple projects simultaneously.

Why architects choose us

We are a family-owned principal contractor with a dedicated focus – we never fire off speculative tenders. We only consider projects that we have a proven track-record in, and that we know we can deliver better than anyone else.

Our attention to detail starts with our considered tender. We highlight where improvements or changes could be made and we scope out every detail.

When we tender for business we always mean business – and, of course, we always deliver.

“I have been impressed with their professional hands-on approach and effective project management together with their work ethic which encompasses honesty, integrity and reliability.”

Why homeowners choose us

Working to create a dream home is a true labour of love.

Our extensive experience in high-end residential extensions, alterations and complete refurbishments means we can advise, project manage and deliver the perfect finish every time.

We work closely with the homeowner, the architect and other service providers to ensure budgets, deadlines and expectations are always met.

“The standard of the finish is exceptional and several friends and neighbours who have seen it have been very struck by the quality of the workmanship.  We could not be more pleased, thank you all so much.”

Why care home owners choose us

It takes care, attention to detail and sensitivity to project manage building projects in a care home. The needs of the clients we ultimately serve must be considered at every stage of the build.

Our success in this field reveals just how well we understand these needs – as does our impressive 75% tender conversion rate.

Professional site management, excellent communication and collaboration are the ways we ensure that our work has little or no impact on the care home’s day to day operation.

“They proved to be utterly reliable, knowledgeable and courteous dealing quickly with any problems identified and working well with the Trust to minimise any disruption to the daily life of the residents.  All work carried out was to our total satisfaction.”

Why landlords and property developers choose us

Office to apartment conversions can be extremely lucrative investments. But they take a great deal of planning and require a principal contractor who fully understands the complexities.

And one who can deliver on time and on budget.

In the last few years we have created around 40 apartments from disused office space – it’s very much a core part of what we do.

And the speed with which these have been let or sold, explains just why landlords and property developers choose us.

Cortec were a key ingredient in the success of this project. Proactive problem solving and keen attention to detail resulted in an excellent end product with four flats letting on our launch day and the remaining three shortly afterwards;…highly commended

Delivering Projects in your area

We have more than 25 years of experience as a principal construction contractor in Surrey, Hampshire, West Sussex, Berkshire and South West London.

Areas we serve

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Want to discuss your high-end residential, office to residential conversion or healthcare project?