One Call UK · London & Home Counties
Exceptional homes are built, not bought.
Premium residential renovation and commercial fit-outs, delivered by one accountable team — from the first survey to the final coat of paint.
- Fully insured
- Certified trades
- One point of contact
- Free estimates
About One Call UK
London's trusted name in quality construction
We are an insured, certified construction team specialising in refurbishments and property transformations across London and the Home Counties — creating durable, functional and beautifully finished spaces tailored to each client.
From whole-house renovations to a single perfect bathroom, every project runs through one project manager, one written programme and one uncompromising standard of finish.
- Fully insured teams
- Certified trades
- Transparent estimates
- Workmanship guarantee
What we do
Excellence in every discipline
Twelve specialist services under one roof — construction, interiors, smart living, security and sound, so your project never depends on strangers meeting for the first time on your doorstep.
Whole-house
Residential Renovation
Whole-house refurbishments and property transformations, managed end-to-end by one accountable team.
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Structural
Extensions & Loft Conversions
Rear and side extensions, loft conversions and structural remodelling that add space and long-term value.
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Interiors
Bespoke Kitchens
Design-led kitchen renovations — cabinetry, stone, lighting and appliances installed to a furniture standard.
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Smart Living
Smart Home
End-to-end smart home installation — from initial system design to full delivery, integrating lighting, climate, entertainment and security into one seamless, app-controlled home.
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Security
Security Camera & Alarm Systems
CCTV, alarm and access-control installation for homes and businesses — discreet, reliable systems designed, fitted and configured by certified installers.
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Commercial
Commercial Fit-outs
Office, retail and hospitality fit-outs delivered fast, clean and to specification — with minimal downtime.
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A process built around certainty
Six clear stages from first call to aftercare — you always know what happens next, what it costs and who is accountable.
Enquiry & consultation
Tell us about the project by phone, WhatsApp or the estimate form. We'll talk through what you want to achieve, your budget range and your timing — and give you an honest early view on feasibility.
Site survey & estimate
We visit the property, measure up, check the practicalities — access, structure, services — and follow up with a clear written estimate broken down by stage, so you can see exactly where the money goes.
Design & planning
Where drawings, structural calculations, planning permission or party-wall agreements are needed, we coordinate them — working with your architect or introducing trusted professionals from our network.
Selected work
Crafting London's most exclusive spaces
From Mayfair apartments to Surrey pavilions — a snapshot of recent transformations.
The One Call standard
Why clients stay with us
One point of contact
A single project manager owns your job from survey to snag list — one phone number, one programme, one person accountable.
Insured & certified
Fully insured teams, certified trades and building-regulations compliance managed for you on every project, big or small.
Finish-first culture
We are judged on the final five per cent — crisp lines, level surfaces, doors that close like they should. It's the standard everything else serves.
Contact us
Let's talk about your project
Tell us what you are planning — we will visit, measure and prepare a detailed written estimate, free and without obligation.
Call or WhatsApp
07398 389964 — one call really is all it takes. Prefer to type? Message us on WhatsApp.
Office
One Call UK, operated by Hamiltonn LtdFlat 1, 117 Station Road, Edgware, England, HA8 7JG
Opening hours
Monday – Friday: 09:00 – 17:00
Saturday – Sunday: by appointment
Where we work
All of Greater London and the Home Counties. See the full list of areas →
Request a free estimate
Tell us about your project and a member of the team will come back to you within one working day.
Your details are sent securely and only used to respond to your enquiry.
Industry credentials