Carpentry,
Building &
Finishing.
Family-run carpenters and builders covering Stanmore, London and Hertfordshire. From a small repair to a full renovation, done properly and finished to a high standard.
Skilled trades.
Family run.
Jonner Construction is a family-run company specialising in carpentry, joinery, building and maintenance. We work across London and the Hertfordshire area, taking on projects of all sizes with the same care and attention to detail.
From house renovations and refurbishments to extensions, landscaping, repairs and general building, we deliver high-quality workmanship and a reliable, tidy service from start to finish.
- Family-run and fully insured
- High-quality workmanship, guaranteed
- Free quotes with clear pricing
- Projects of all sizes, big or small
Our Services
Staircases, doors, flooring, fitted work
Carpentry & Joinery
Bespoke staircases, doors, fitted joinery and timber flooring. Fine carpentry finished to a high standard, inside and out.
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Extensions, refurbishments, building
Extensions & Renovations
House extensions, full renovations and refurbishments. From structural building work to the final finish, handled start to finish.
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Timber garden rooms and studios
Garden Rooms
Insulated, timber-clad garden rooms, studios and home offices. Built to last and finished to match your home.
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Patios, fencing, maintenance
Landscaping & Repairs
Patios, paving, fencing, general repairs and ongoing maintenance. Whatever needs doing around the house and garden.
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Quality workmanship.
Reliable service.
We take pride in doing the job right. We turn up when we say, keep you updated and leave the place clean. From the first quote to the final finish, you deal with the same people.
Family Run
A family business built on referrals and repeat work across London and Hertfordshire. You deal with us directly, start to finish.
Fully Insured
All our work is fully insured and guaranteed. You are covered, and so is your home.
Clear Pricing
Free, no-obligation quotes with clear pricing before we start. No surprise invoices, no hidden extras.
Any Size Job
From a small repair to a full-scale renovation, we handle projects of all sizes with the same care and professionalism.
Covering London and Hertfordshire
Based in Stanmore, we cover North West London and the Hertfordshire area. Not sure if we cover your postcode? Give us a call.
Ready to start your project?
Call or email for a free quote. We'll get back to you the same day.