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Our Services

We offer a comprehensive range of construction and building services tailored to the needs of residential, commercial, and industrial clients. Our expertise covers everything from new builds and large-scale renovations to extensions and interior fit-outs — all delivered with a focus on quality, efficiency, and precision.We provide full project management and site supervision to ensure every stage runs smoothly, on time, and on budget. Our team also handles all aspects of planning, permitting, and regulatory compliance, offering a seamless experience from initial concept through to final handover.Whether it’s structural work, bespoke design-and-build solutions, or complex refurbishments, we bring a thoughtful, hands-on approach to every project. At Build 121, we’re committed to craftsmanship, safety, and lasting results — building spaces that are not only functional, but built to stand the test of time.

Interior Design
Image by Glenov Brankovic
Image by Grove Brands

Residential

Construction

New-build homes

Home extensions and loft conversions

Full refurbishments and renovations

Garden rooms, outbuildings, and external works

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Commercial

Construction

Retail and office fit-outs

Hospitality spaces (cafés, restaurants, bars)

Mixed-use developments

Refurbishment of commercial properties

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Design&Build Solutions

Seamless design-and-build delivery

Close collaboration with our sister company, Design 121

Fully managed, bespoke solutions from concept to completion

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Project Management

End-to-end construction oversight

Programme and budget control

Site coordination and supervision

Contractor and trades management

Structural Works & Alterations

Foundations and structural modifications

Internal reconfigurations and wall removals

External facades and envelope enhancements

Planning & Compliance

Planning application support

Building control and regulation compliance

Health & safety management

Guidance on sustainability and building standards

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Build121 Ltd | Eagle House |163 City Road | London | EC1V 1NR | United Kingdom

Registered in England & Wales No. 16470686


London Phone: 02080043425 - 07450 769840

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Build 121 combines thoughtful design with expert construction — delivering seamless, end-to-end solutions from concept to completion.

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