As a construction company and team of experienced builders in London, JJ Construct supports homeowners, landlords and developers with projects ranging from full new builds to refurbishments, extensions, loft conversions and ongoing maintenance. This dedicated FAQ page explains how we work in each of these areas, what to expect from the process, and how we help you keep your project on time, on budget and compliant with UK regulations.
How we work
New builds
If you are planning a new build house or small residential development in London, visit our dedicated New Builds service page to see how we work, view example projects and learn more about our turnkey new build construction services in London.
JJ Construct manages the full new build process, including groundworks, structure, roofing, services and interior fit-out, coordinating all trades from start to completion.
Yes, we work alongside architects and engineers, advise on buildability and budget, and help you navigate planning permission and building control approvals where required.
Timeframes depend on size and complexity, but a typical single new build house takes several months from site start to handover once design and permissions are in place.
We can deliver single houses, contemporary flats and smaller residential developments, including infill schemes and conversions.
If you are planning a new build house or small residential development in London, visit our dedicated New Builds service page to see how we work, view example projects and learn more about our turnkey new build construction services in London.
Apartment refurbishment
To see exactly what we can do with your apartment – from layout changes to full interior upgrades – visit the Apartment Refurbishment section of our website.
Our team of builders in London can reconfigure layouts, update plumbing and electrics, install new kitchens and bathrooms, renew flooring and provide full decoration and finishing.
For lighter works it can be possible to stay in the property, but for major refurbishments we usually recommend moving out temporarily for safety and comfort.
Yes, we regularly refurbish properties to improve appeal on the rental and sales market, focusing on cost-effective upgrades that add visible value.
We start with a clear scope of works and cost breakdown, then agree any changes with you in advance to avoid unexpected costs.
To explore how we can transform your flat – whether for your own use, resale or rental – visit our Apartment Refurbishment service page for full details of our flat refurbishment services in London, project examples and typical refurbishment packages.
Extensions
If you’re exploring options for adding more space with a rear, side return or wrap-around extension, head over to our Extensions service page.
As a London construction company, we build rear extensions, side return extensions, wrap-around extensions and multi-storey extensions tailored to your property and planning context.
For many clients, an extension provides the extra space they need at a lower overall cost than buying a larger property, while allowing them to stay in the same area.
Yes, we coordinate with your designer, advise on local guidelines and assist with planning and building control submissions where needed.
Very often we combine an extension with a new kitchen, updated living spaces or a full ground-floor refurbishment to create a coherent, open-plan layout.
If you are considering a rear, side return or wrap-around extension, visit our Extensions service page to see how we design and build house extensions in London, view example layouts and learn more about extending your home with JJ Construct.
Loft conversion
Homeowners interested in creating an extra bedroom, office or studio in the roof space can find more information on our Loft Conversions page.
A loft conversion can add a new bedroom, bathroom, office or studio, increasing living space and property value without losing garden area.
Suitability depends on head height, roof structure and access, so we always assess the existing loft to confirm what type of conversion is feasible.
Some projects fall under permitted development, but this depends on the property and location, so we check the specific requirements before work begins.
We deliver dormer, mansard and rooflight (Velux) loft conversions and recommend the best option based on your roof shape, budget and space requirements.
For more information on adding space with a dormer, mansard or Velux loft conversion, visit our Loft Conversions service page to learn how we work, what’s involved and how our loft conversion specialists in London can maximise the potential of your roof space.
Maintenance services
For a full list of repairs, small works and ongoing maintenance options we provide across London, please visit our Maintenance Services page.
We handle a wide range of maintenance works, including plumbing and electrical repairs, carpentry, decorating, plastering and minor improvements around the home.
Yes, we can attend single call-outs for specific issues or agree regular maintenance for homeowners, landlords and managing agents.
We are happy to help with smaller tasks such as refreshing a room, replacing doors, fixing defects or completing unfinished work left by previous contractors.
Response times depend on the type of problem and team availability, but urgent issues are prioritised and scheduled as soon as reasonably possible.
To see the full range of one-off and planned property maintenance services we offer for homeowners, landlords and managing agents, visit our Maintenance Services page and discover how our London maintenance team can keep your property in good condition all year round.
