House Extensions
Rear, side, wrap-around and double-storey extensions including steelwork, openings and glazing coordination.
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Altrincham • Trafford & South Manchester
House Extensions in Altrincham South Manchester
Rear, side, wrap-around and double-storey house extensions delivered wih clear planning, direct communication and full Building Control compliance.
⭐ 5.0 Google Rating • FMB Member • £5M Fully Insured • 15+ Years Experience
FMB Approved Builder
Services
Focused on larger residential projects — bespoke extensions, refurbishments and conversions delivered with structural expertise, clear scope and controlled programme management.
Loft / Dormer Conversions
Dormers and full conversions to create premium space insulation standards, structure and finishes done properly.
Garage Conversions
Warm, compliant conversions into offices, gyms or living rooms with thermal upgrades and clean detailing.
Meet Reza
Led by a hands-on builder with clear communication from first visit to final handover.
A.TO.ZII LTD is led by Reza, a hands-on builder with over 15 years of experience delivering high-quality house extensions, structural alterations and residential refurbishments across Altricham and South Manchester
You deal directly with the builder throughout the project, ensuring organised site delivery, consistent quality and a calm, controlled process from start to finish.
Why choose us
Built for homeowners who care about quality, clarity and long-term value.
Professional project management
Clear stages, timelines and updates — so you always know what’s next.
Structural steelwork experience
Load-bearing wall removal, RSJ installation and structural alterations carried out safely and cleanly.
Proud Member of Federation of Master Builders-FMB Member No. 169090
£5m Public Liability
Written quotations & clear scope
Case Studies
Four recent projects — 3 extensions and 1 full refurbishment.
Double Storey Extension — Broadheath, Altrincham
Start: 1 Aug 2024 • Finish: 30 Nov 2024. A double and single-storey extension delivering new living space across both floors, including underfloor heating, bespoke detailing and a fully reconfigured layout — completed through a structured, well-managed programme.
Open-Plan Kitchen Extension — Sale
Start: Late Feb 2025 • Finish: Late Apr 2025. A single-storey rear extension creating a large open-plan kitchen and dining space, involving major structural steel installation, full rear wall removal and high-quality internal finishes.
Double Storey Extension — West Timperley, Altrincham
Start: 1 May 2025 • Finish: 31 Dec 2025 (scheduled). A comprehensive double-storey extension involving major structural alterations, full roof replacement, smart zoned underfloor heating, new bathrooms and a complete internal and external refurbishment — delivered under structured programme control.
Full Home Refurbishment — Timperley, Altrincham
Our process
Simple, repeatable steps designed to reduce stress and keep your project controlled.
01
Consultation
Discuss goals, constraints, budget range and feasibility.
02
Scope & quotation
Written scope, inclusions/exclusions and optional upgrades.
03
Build
Managed stages, tidy site, and quality checks throughout.
04
Handover
Snagging, sign-off and aftercare support.
FAQs
Clear answers to common questions.
Do you provide written quotations?
Yes — with clear scope, inclusions/exclusions and optional upgrades.
Are you insured?
Yes — we are fully insured with Cover Insurance plc, including £5m Public & Products Liability and £10m Employers Liability. Evidence can be provided upon request.
Do you coordinate Building Control?
Yes — inspections and compliance can be managed as part of the process.
How do payments work?
Staged payments agreed in writing and linked to milestones.
Do you offer aftercare?
Yes — we remain available for aftercare and workmanship queries following completion.
Ready to discuss your project?
Site visit by arrangement. Well confirm next steps and provide a clear plan.