Contact us
One call is all it takes.
Tell us about your project — we'll visit, measure and prepare a detailed written estimate, free and without obligation.
Talk to us
Face-to-face consultation
Explore how our team can support your project with expert guidance, clear planning and tailored solutions.
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 →
Get a free quote
Complete the form and a member of the team will come back to you within one working day.
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Before you call
Answers to common questions
Do you charge for estimates?
No. Consultations and written estimates are free and carry no obligation. For complex structural projects that need engineering or design work before a price is possible, we will explain any professional fees clearly before anything is commissioned.
Do I need planning permission for a loft conversion or extension?
Many loft conversions and single-storey extensions fall under permitted-development rights, but conservation areas, flats, maisonettes and larger designs usually require a full planning application.
We review your property's position at the start and handle the process — architectural drawings, submissions and liaison with local councils across London and the Home Counties.
What is the typical timeline for a full residential renovation?
Timelines vary with scope, but for a full-scale, high-end renovation clients should anticipate:
- Pre-construction (8–12 weeks): design, structural engineering and planning.
- Primary works (16–24 weeks): structural alterations, first-fix services and shell completion.
- Finishing phase (8–12 weeks): joinery, specialist finishes and commissioning.
Smaller projects move much faster — a bathroom typically takes 2–3 weeks on site and a kitchen 3–5 weeks.