Loft Conversions
Turn wasted roof space into a bright new bedroom, home office or en-suite - often without changing your home's footprint. One of the most cost-effective ways to add a room and value.
Explore loft conversions
North London · Edgware · Loft, Extensions & Renovations
Builders in North London for lofts and extensions.
Kev Construct Ltd creates the extra space your family needs - without the cost and stress of moving home. Loft conversions, house extensions and full renovations across Edgware and North London, with clear fixed prices and no hidden fees.
★★★★★
Checkatrade rated 9.67 / 10 from 50+ verified reviews
Fixed prices, no hidden fees
The number Marian quotes is the number you pay.
PROJECT PHOTO
KITCHEN
NORTH LONDON
CHECKATRADE 10/10
Checkatrade 9.67/10
50+ verified reviews
£1,000 Checkatrade Guarantee
Member since 2019
Fixed prices, no hidden fees
The real problem
You haven't outgrown your street. Just your floor plan.
The family's grown, you're working from home, and the kitchen and layout no longer match how you live. Moving means stamp duty, agent fees, a new school run and months of stress - all to leave the home and the area you actually love.
- 01A new baby, growing teenagers or a home office - you simply need more room.
- 02The kitchen, bathroom and layout no longer fit how your family lives today.
- 03Moving would cost a fortune - and mean leaving the area you love.
“John and the whole crew were a pleasure to work with. Fast, great communication, finished on time and to a high quality.
★★★★★- Verified customer · External wall insulation, Watford (WD18) · 10/10
“Dan and Niko put real care into the work; Marian set everything out clearly with no hidden fees. They went above and beyond.
★★★★★- Verified customer · Kitchen & bathroom refurb, Wembley (HA0) · 10/10
“We're an architecture practice and have worked with Kev Construct for years. Reliable, trustworthy, excellent finishes.
★★★★★- Verified customer · Extensions & conversions, North London (N4)
The solution
Transform the home
Transform the home
you already have.
One experienced local team takes your project from the first drawing to the final coat of paint.
House Extensions
Single-storey rear, double-storey, side-return and kitchen extensions that flow naturally with your home. More room downstairs for family life, more upstairs for growing children.
Explore extensionsHome Renovations
Whole-house refurbishments, reconfigured layouts and structural changes. A home that feels brand new and fits the way your family lives - without moving an inch.
Explore renovationsKitchens & Bathrooms
Practical, hard-wearing, beautifully finished kitchens and bathrooms - from a simple refresh to a full rip-out and rebuild. Everything set out clearly up front.
Explore kitchens & bathroomsInsulation & Rendering
External wall insulation and rendering that cuts heat loss, lowers energy bills and gives your home a fresh, modern finish. One of our most-reviewed specialities.
Explore insulation & renderingGeneral Building & New Builds
Structural work, knock-throughs, garage conversions, outbuildings and complete new builds. Domestic and commercial, including insurance work - one team, one clear price.
Explore building services9.67/10Checkatrade rating
50+★Verified reviews
2019Checkatrade member since
£1kCheckatrade Guarantee
Our work · 413+ photos on Checkatrade
Real projects.
Real projects.
Real North London homes.
A few recent jobs across North London and Hertfordshire. Every project is backed by verified Checkatrade reviews.
How it works
A clear, no-surprises process.
You always know what happens next, who's on site, and exactly what it costs.
01
Free consultation
Call or message us and we'll arrange a convenient time to visit your home. Free, with no obligation.
02
Fixed-price quote
Marian prepares a detailed, fixed-price quote - exactly what's included, with no hidden fees.
03
Design & planning
We refine the design and, where needed, guide you through planning and building regulations.
04
The build
Dan, Niko and the team get to work; John keeps the site tidy and keeps you updated.
05
Finishing & handover
We finish the details, tidy up fully and hand over - backed by the £1,000 Checkatrade Guarantee.
Builders you can actually trust
No cowboys. No disappearing acts. No surprise costs.
Kev Construct Ltd is an established, family-minded building company based in Edgware, serving North London homeowners since 2019. Registered limited company (No. 12080875) - careful, honest work, treated as if it were our own home.
- 9.67/10 on Checkatrade50+ verified reviews · passed up to 12 Checkatrade checks.
- Fixed prices, no hidden feesMarian sets everything out clearly, up front.
- One real, local teamJohn on site, Dan & Niko on the build - start to finish.
- £1,000 Checkatrade GuaranteeFree estimates · domestic & commercial · insurance work.
Your team / on-site photo
9.67/10 rating
55Reviews
£1kGuarantee
9.67 / 10 from 50+ verified reviews
What North London
Read all reviews on Checkatrade
What North London
homeowners say.
★★★★★
“John and the whole crew were a pleasure to work with. Fast, great communication, finished on time and to a high quality.”
Verified customerExternal wall insulation · Watford (WD18) · 10/10
★★★★★
“Dan and Niko put real care into the work; Marian set everything out clearly with no hidden fees. They went above and beyond.”
Verified customerKitchen & bathroom refurb · Wembley (HA0) · 10/10
★★★★★
“We're an architecture practice and have worked with Kev Construct for years. Reliable, trustworthy, excellent finishes.”
Verified customerExtensions & conversions · North London (N4)
Local builders
Across North London & Hertfordshire.
Based in Edgware and working with homeowners right across North London and Hertfordshire. Not sure if we cover your area? Just ask.
Good to know
Your questions, answered.
Is it cheaper to extend or convert than to move house?
In most cases, yes. When you add up estate agent fees, stamp duty, solicitors, surveys and removals, moving to a larger home in North London can cost tens of thousands of pounds. A loft conversion or extension often costs less overall and gives you a home that fits your family exactly, while adding value to a property you already love.
How much does a loft conversion or extension cost?
Every project is different, so we always provide a fixed-price quote after visiting your home. As a rough guide only, a straightforward loft conversion often falls in the region of £40,000-£70,000, and a single-storey rear extension around £45,000-£80,000, depending on size, specification and finish. Your written quote from Marian sets out the exact price with no hidden fees.
Do I need planning permission?
Many loft conversions and single-storey extensions fall under permitted development and do not need full planning permission, though they still need to meet building regulations. Larger or double-storey projects may require planning permission. We guide you through the whole process and help arrange the drawings and approvals.
How long will the work take?
It depends on the size and type of project. As a guide, many loft conversions take around 6-8 weeks and single-storey extensions around 8-12 weeks once work begins, with larger renovations taking longer. We give you a realistic timeline in your quote and aim to finish on time, as our verified reviews confirm.
Are you insured and guaranteed?
Yes. Kev Construct Ltd is a registered limited company (Company No. 12080875), and every project is backed by the £1,000 Checkatrade Guarantee. We are Checkatrade members with a 9.67/10 rating from 50+ verified reviews and have passed up to 12 Checkatrade vetting checks. We also undertake insurance work for domestic and commercial clients.
How do I get started?
Simply call us on 07838 662 225, email kev.constructltd@gmail.com or fill in our form below. We'll arrange a free, no-obligation visit, discuss what you want to achieve, and follow up with a clear fixed-price quote. No pressure and no cost to find out what's possible for your home.
Free & no obligation
Get your free
Get your free
fixed-price quote.
Tell us about your project and we'll arrange a free home visit. You'll get a clear, fixed price in writing - with no pressure and no hidden costs.
- 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