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United Construction Group | Design & Build London Contractor
United Construction Group crew on-site under sunlit architectural concrete structure
Design-Build Practice

London’s Design & Build Construction Group

United Construction Group is a professional Design & Build contractor delivering high-quality residential, commercial and development-led projects across London and the surrounding areas.

We provide a structured end-to-end service — combining design coordination, project management and construction delivery under one accountable team. Our clients choose UCG for reliability, transparency and consistently high construction and finishing standards.

Typical projects from £55,000+
Project Enquiries: 03301 131 338
20+
Projects Delivered
£3m+
Total Contract Value
20+
London Postcodes Covered
100%
High-End Quality Standards
What We Offer

What We Deliver

Architectural design drawings and blueprint review

Design & Planning

Comprehensive architectural design coordination, local planning authority management, and engineering details engineered for seamless builds.

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Premium loft conversion master bedroom suite

Loft Conversions

Maximising underutilised roof spaces with bespoke master suites, guest rooms, and structural glazing details that draw natural light inside.

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Luxury home extension showing sleek glass sliding doors

House Extensions

Sleek side-returns and rear extensions designed to open kitchens and family spaces into landscaped areas.

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Subterranean luxury basement space

Basement Conversions

High-end excavation solutions that introduce media halls, wellness zones, and structural basements below standard grade.

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Modern exterior architectural development

New Build Developments

Turnkey luxury homes built from foundation to finishes under rigid quality-assured project timelines.

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Sleek premium architectural commercial office workspace

Commercial Fit-Outs

Premium corporate refurbishments, hospitality fit-outs, and workspace transformations prioritizing premium craftsmanship.

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Luxurious residential living room refurbishment

Full Property Refurbishments

Comprehensive interior retrofitting, architectural layout redesigns, and whole-house premium finishings for high-end properties.

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Our Principles

Why United Construction Group

EXPERT CRAFTSMANSHIP

High-quality workmanship delivered with precision, attention to detail and consistently high finishing standards across all projects.

TRANSPARENT PRICING & CLEAR SCOPE

Clear, itemised quotations with defined scopes, allowances and programme clarity — ensuring absolute control with zero grey areas.

DESIGN & BUILD UNDER ONE ROOF

Planning, design coordination, architectural supervision, and structural delivery managed under one single accountable company team.

QUALITY CONTROL & ASSURANCE

Rigorous site management, independent inspections, and exacting engineering checks applied throughout every stage of development.

CLEAR PROJECT COMMUNICATION

Direct dedicated project manager coordinates with consistent weekly updates from project commencement to smooth completion.

RELIABLE PROGRAMME DELIVERY

Strict structural scheduling, milestone planning, and coordinated trades to ensure consistent, timely delivery without compromising quality.

Bespoke Spaces

Featured Projects

Minimalist glass living pavilion with custom lighting
House Extension Hampstead NW3

Glasshouse Structural Extension

Bespoke luxury attic master suite extension
Loft Conversion Chelsea SW3

Mansard Master Suite

Premium marble kitchen and custom joinery in high-end renovation
Full Refurbishment Kensington W8

Victorian Estate Renewal

Subterranean wellness suite and media room in London basement
Basement Conversion Richmond TW9

Subterranean Wellness Suite

Bespoke Framework

Our Delivery Process

01

Initial Consultation & Site Review

We review your site layout, outline architectural feasibility, discuss budget expectations, and plan delivery scopes.

02

Design, Planning & Pre-Construction

Preparing architectural elevations, managing planning applications, and executing structural engineering schedules.

03

Scope, Cost & Programme Agreement

Itemising precise quotations and drafting structured programme schedules to ensure absolute cost transparency.

04

Construction Delivery

Direct project managers coordinate skilled trade operations under rigorous health, safety, and finish inspections.

05

Completion & Handover

Executing detailed snagging, delivering compliance certifications, and transferring a beautifully finished premium space.

06 / CLIENT STORIES

Architectural Quality,
Uncompromised Trust

“I needed the old front garden walls knocked down and new walls built. I had an idea of what I wanted and the team were very accommodating. They checked in with me to ensure they got the right colour bricks for the job. The teamwork swiftly taking pride in delivering the job. When I wasn’t sure on the finish they gave their professional opinion which I was really happy with. Extremely good crew to work with.”

Elizabeth M. Garden Wall Rebuild | London

“Gytis, Arjan and the rest of the crew did a fantastic job helping us convert the loft space of our Victorian terrace in Leytonstone. We were impressed with their hard work and focus. They worked long hours (including weekends) to keep everything moving along and coordinated well with our architect. Crucially, they maintained excellent communication throughout, which was very reassuring.”

Sarah & David Victorian Loft Conversion | Leytonstone

“Overall service was fantastic. We agreed a price and work started the following day. The driveway was dug up and laid down in 2 days. So fast and great quality in their craftsmanship. The bathroom and downstairs toilet look fantastic and we managed to get our bedrooms decorated as well. Just wanted to say a big thank you to the whole team as they were put under a lot of pressure to complete.”

Robert K. Refurbishment & Driveway | London
Certified Trust

Accreditations & Certifications

Acclaim Accreditation
SSIP Safety Schemes in Procurement
SMAS Worksafe
Constructionline Gold Member
CHAS Accredited Contractor
PQS

Start Your Project Enquiry

Typical projects from £55,000+ | London & Surrounding Areas

Request Consultation
London Reach

Project Locations

20+
Projects Delivered
£3m+
Contract Value
20+
London Postcodes
Expert Advice

Frequently Asked Questions

Design & Build places planning, architectural layout design, structural engineering, cost control, and physical delivery under a single point of accountability. This completely eliminates gaps between architectural concept drawings and site builders, minimises project scheduling risk, and ensures direct pricing feedback from pre-construction to prevent budget overruns.

Yes, entirely. We handle all coordination with London Local Planning Authorities, preparing architectural files, structural surveys, Permitted Development (PD) applications, Full Planning approvals, party wall surveyors where required, and managing ongoing site inspections through Building Control to obtain final completion certificates.

Our typically delivered design-build scopes range from £55,000 up to £1m+. This encompasses full property refurbishments, complex loft conversions, major glass rear extensions, basement structural works, and modern commercial office or retail fit-out projects in and around the Greater London region.

Prior to structural mobilization on site, we draft a detailed Gantt timeline outlining milestones, trade rotations, procurement schedules, and material deliveries. This critical path scheduling is supervised directly by your dedicated Project Manager, ensuring trade coordination runs on time without compromising finish standards.

Yes, UCG has a specialized division covering high-specification commercial fit-outs, executive office transformations, retail refurbishments, and development-led multi-residential housing works, operating under strict corporate CDM safety regulations and timeline requirements.

Simply complete our online project questionnaire in Section 10 with your details, project type, planning status, and desired investment level. Alternatively, call our office directly at 03301 131 338. We will schedule a site consultation and perform a structural assessment to outline structural steps.

Get In Touch

Start Your Project Enquiry

Tell us about your project and we’ll review your architectural requirements, site feasibility, planning pathways, and next structural steps.

Project Enquiries

03301 131 338

Operating Region

London & Surrounding Areas