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Cold Square®

Solid Work. Square Principles.

Rusty Steel
Building Construction

We are an accredited B2B construction contractor and consultancy delivering reliable site execution, technical services, and project delivery across wide range of sectors. As a Constructionline Gold Member and SafeContractor certified firm, we combine regulatory compliance, hands-on leadership, and client-centred delivery from design & build to fit-outs and retrofit.

A snapshot of our core services. See all services here.

Design & Build

Seamless delivery from planning to handover, ideal for clients seeking one trusted contractor throughout the project lifecycle.

Principle Contracting

Accredited lead contractor services providing full site control, multi-trade coordination under CDM 2015 regulations.

Specialist Cleaning

Specialist commercial and post-construction cleaning for voids, sites, welfare units, and more, delivered through our dedicated division,

Cleaning Square®.

Refurbishments & Fit-Outs

Internal and structural upgrades for commercial and residential spaces, delivered safely and efficiently.

Project Management & Consultancy

End-to-end project coordination and client construction advisory, including CDM roles, led by qualified professionals.

Discover Our Construction Services

Based in Canary Wharf, Serving Clients Across London and the UK

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Why Choose Us

We combine accreditations, qualified leadership, and the operational infrastructure expected of a principal contractor.

 

Read full details on Why Choose Us here.

See full list of our Accreditations and Registrations here.

Read our story and learn more About Us here.

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Accredited & Compliant

Constructionline Gold, SafeContractor, VAT & CIS Registered

Construction site

Qualified Team

Director-led with SMSTS & CSCS-Certified Construction Professionals

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Health & Safety Governance

CDM-Compliant Delivery With Oversight From Our External H&S Partner, Alcumus SafeWorkforce

Installing Solar Panels

Social Value & Sustainability

Living Wage Employer, CITB Registered & Environmentally Compliant

Construction Workers Shaking Hands

Subcontractor Vetting & Supply Chain Control

Prequalified Partners Managed Through Our Constructionline Buyer Profile Supply Chain Management System

Man Signing

Contracting & Client Protection Measures

JCT Contracts, Performance Bonds & Warranty Options Available

A snapshot of our accreditations and registrations. See the full list here.

Opportunities

Work For Us

Join our growing team and supply chain. We value skilled professionals and emerging talent, and actively explore opportunities for subcontractors, staff, apprenticeships, and more.
Learn more and explore opportunities here.

Work With Us

We are open to strategic partnerships, joint ventures, and investor interest from B2B collaborations to landlord development opportunities.

Explore partnership opportunities here.

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