Loft conversions in North London
A loft conversion is the quickest way to add a bedroom, ensuite or home office without extending your footprint or moving home. Kev Construct designs and builds fixed-price loft conversions across Edgware, North London, Barnet, Enfield and Watford, rated 9.67/10 across 50+ verified Checkatrade reviews - the space your family needs, in the home you already love.
Recent loft conversions in North London
Space you already own, sitting empty under the roof
Your loft is space you already own and already pay for, sitting empty under the roof. Converting it turns that dead space into a proper room your family uses every day, and it usually costs far less than moving to a bigger house in North London. There is no chain to wait for, no stamp duty to swallow, and no goodbye to the street, the neighbours and the school run you have built your life around.
For most North London families, a loft conversion answers the same problem that makes people think about moving: there just is not enough room. A new master bedroom with an ensuite frees up space downstairs. Two children finally get a room each. A quiet home office means work stays out of the kitchen. And because a well-built loft room adds a bedroom and often a bathroom, it can add real value to your property while you enjoy it. You get the extra space now, and the return later.
The four main types of loft conversion
There is no single "best" loft conversion. The right one depends on your roof shape, how much headroom you have and what you want the space to do. We look at all of this on a free home visit and recommend the option that gives you the most usable room for a sensible budget.
Dormer
A box-shaped extension to the rear roof for full headroom and floor space. Ideal for terraced and semi-detached homes. Guide: £45,000-£65,000.
Maximum spaceMansard
Rebuilds the rear roof to a near-vertical slope for the most possible space. Suits terraced and period homes. Usually needs planning, which we handle. Guide: £60,000-£80,000+.
Semis & end-terraceHip-to-gable
Extends the sloping "hipped" side of the roof out to a vertical gable wall. Often combined with a rear dormer for even more room. Guide: £50,000-£70,000.
Most cost-effectiveVelux (roof-light)
Roof windows and a fully fitted loft room without changing the roof shape. The lowest-cost option where headroom already allows. Guide: from £30,000.
One team, from first drawing to final coat of paint
We handle the whole project with one team you can talk to throughout. Your fixed price covers architectural design and drawings, structural calculations, planning and building-regulations sign-off where needed, and all the structural and building work itself. It also includes your new staircase, insulation to current standards, electrics, plumbing for an ensuite where you want one, plastering, and decoration.
Because it is all delivered by Kev Construct rather than a string of separate trades, there are no gaps for things to fall through and no finger-pointing if something needs sorting. On completion you receive the certification your conversion needs and a workmanship guarantee, backed by the £1,000 Checkatrade Guarantee. Marian sets the quote out clearly in writing so you know the full cost before we start, with no hidden fees.
A bright new room in your roof
A loft conversion turns wasted roof space into a proper bedroom, home office or ensuite - filled with natural light and finished to the same standard as the rest of your home.
A simple, predictable process.
You always know what happens next, who's on site, and exactly what it costs.
Free home visit
We come to you, look at your loft and roof, and talk through what you want the space to do.
Fixed quotation
Marian prepares a clear, itemised quote in writing with no hidden fees.
Design & planning
We prepare drawings and structural calcs, and handle any planning or building-regs approval.
The build
John, Dan and Niko carry out the work, keep the site tidy and stick to the schedule.
Completion
We hand over your finished room with its certification and workmanship guarantee.
How much does a loft conversion cost in North London?
As a guide, loft conversions in North London typically start from around £30,000 for a Velux conversion and rise with size and complexity. These are guide ranges for 2026 - every home is different, so we confirm your exact figure in a fixed written quote after a free home visit.
Guide ranges for North London, 2026 - not fixed quotes. We quote every project individually and put the final figure in writing before any work begins.
What our customers say.
“John and the whole crew were a pleasure to work with. Fast, great communication, finished on time and to a high quality.”
“Dan and Niko put real care into the work; Marian set everything out clearly with no hidden fees. They went above and beyond.”
“We're an architecture practice and have worked with Kev Construct for years. Reliable, trustworthy, excellent finishes.”
Good to know.
Do I need planning permission for a loft conversion?
Most loft conversions in North London fall under permitted development and do not need full planning permission, as long as they stay within the volume and height limits. Mansards, front-facing dormers, flats and homes in conservation areas usually do need permission. We check the rules for your property and handle any application for you.
How long does a loft conversion take?
A typical loft conversion takes around 6-8 weeks on site, depending on the type, the size and whether you are adding an ensuite. We give you a clear schedule with your fixed quote, so you always know what is happening and when, and we work hard to keep to it.
Will a loft conversion add value to my home?
Yes. A well-built loft conversion that adds a bedroom and bathroom is one of the higher-return home improvements you can make to a North London property, and you get to enjoy the extra space in the meantime. In most cases it costs far less than the true cost of moving to a larger home.
Can you build a loft conversion with an ensuite?
Yes. An ensuite is one of our most requested features, and a master bedroom with its own bathroom makes a real difference to family life. We handle all the plumbing, waterproofing and ventilation to building-regulations standard as part of the conversion, and set out the cost clearly in your quote.
Do you cover my area?
We are based in Edgware and cover Edgware, North London, Enfield, Barnet, Watford, Harrow and Hertfordshire. If you are within that area, we would be glad to visit, take a look at your loft and give you a free fixed-price quote.
Ready to add the space
your family needs?
Tell us about your loft and we'll arrange a free home visit. You'll get a clear, fixed price in writing - with no pressure and no hidden fees.
- Free home visit & survey
- Fixed price in writing - no surprises
- Local Edgware team · rated 9.67/10 on Checkatrade
Prefer to talk? 07838 662 225