Onster Group Limited | Premier Building & Civil Engineering Contractors in Kenya

About Onster Group

Onster Group Limited is a Chartered Building and Civil Engineering wholly owned Kenyan Limited Liability Construction Company registered in Kenya since 2014. We are committed to providing appropriate and sustainable infrastructure development solutions delivered in a timely and quality manner.

Our mission is to provide quick and quality Civil Engineering, General Building Construction and Merchandising services to Individuals, Private and Public Institutions through qualified professionals to exceed clients' expectations.

30+ Years Experience

200+ Projects Done

100% Kenyan Owned

Our Core Services

Delivering excellence across all sectors of construction in Kenya

Building Construction

Residential, commercial, and industrial buildings crafted with precision and durability using modern techniques and premium materials.

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Road Construction

Highway and street construction using modern equipment and quality materials for long-lasting infrastructure that stands the test of time.

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Concrete Products

Premium paving blocks, kerbs, and precast concrete for all project needs, manufactured to the highest industry standards.

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Civil Engineering

Comprehensive civil engineering solutions including bridges, drainage systems, and major infrastructure projects.

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Recent Projects

A glimpse of our work across Kenya

Nairobi Business Tower

Commercial • 22 floors • Completed 2025

Mombasa Highway

Infrastructure • 45km • Completed 2024

Kilimani Residences

Residential • 48 luxury units • Completed 2025

Nyali Bridge

Infrastructure • 450m span • Completed 2024

Why Choose Onster Group

What sets us apart in Kenya's construction industry

Qualified Professionals

Our team consists of chartered engineers and certified builders with decades of combined experience.

Timely Delivery

We pride ourselves on completing projects on schedule, every single time, without compromise.

Sustainable Solutions

Environmentally responsible construction practices for a greener, better Kenya.

Client Focused

We exceed expectations through clear communication, transparency, and dedication.

Our Work in Action

Watch our projects come to life

Commercial Project

Time-lapse of our Nairobi business tower construction

Infrastructure Project

Highway construction and development

What Our Clients Say

Trusted by leading organizations across Kenya

"Onster Group delivered our headquarters project ahead of schedule and within budget. Their attention to detail and quality workmanship is outstanding. I recommend them without reservation."

John Mosoti

Narok Roas Chief Engineer

"The team at Onster handled our road construction project with professionalism and expertise. They truly understand Kenyan infrastructure needs and delivered exceptional quality."

Fatma Ahmed

County Engineer, Mombasa

"Working with Onster Group was a pleasure. They navigated complex challenges with ease and delivered a world-class residential development that exceeded our expectations."

Peter Njoroge

Director, Unity Homes

Ready to Start Your Project?

Get In Touch

Nairobi, Kenya

+254 729 999 916

info@onstergroup.co.ke

Mon-Fri: 8:00am - 5:00pm

Sat: 9:00am - 1:00pm

Quick Response

We typically respond within 2 hours during business hours.

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Building Kenya's Future
With Integrity & Excellence

About Onster Group