Transforming Homes Across London
Where We Build Your Vision.
Trusted local builders specialising in extensions, loft conversions, full refurbishments, and complete bathroom and kitchen renovations.
Why Homeowners Across London Choose Harmony Build
Based in London, Harmony Build specialises in high-quality home renovations, extensions, and loft conversions.
Our reputation is built on trust, craftsmanship, and clear communication — most of our work comes from repeat clients and recommendations.
Whether it’s a bathroom refurbishment, full house refurbishment, or a new extension, our experienced team ensures every project is delivered on time, within budget, and to the highest standard.
Our Core Services
Kitchen Renovations
Choose a company with proven expertise in high-end kitchen renovations across London.
We focus on quality craftsmanship, transparent budgeting, and clear communication throughout every stage of your project.
Each kitchen is designed to maximise functionality, aesthetics, and value — completed on time and with minimal disruption.
Our work is fully guaranteed, and every project is built with passion for detail and design.
Bathroom Renovations
Transform your bathroom into a modern, functional retreat that reflects your style.
From concept to completion, our bathroom renovation services across London use premium materials and expert installation.
We deliver durable finishes, elegant design, and a stress-free experience — ensuring your new bathroom enhances both your daily comfort and your home’s long-term value.
Home Extensions
A home extension is the most cost-effective way to gain more living space without the hassle of moving.
Harmony Build constructs a range of single- and multi-storey extensions across North, West and Central London.
We handle the construction stage with precision and care — working seamlessly with your designs to deliver exceptional results and smooth project execution.
Loft Conversions
Unlock the full potential of your home with a loft conversion that adds space, light, and value.
A well-executed conversion can increase your property’s worth by up to 20%, while avoiding the costs of moving.
Our team combines creative design, precision workmanship, and open communication to deliver a space you’ll love for years to come.
Complete House Refurbishment
Refresh your entire property with our complete house refurbishment services.
We create interiors that are both beautiful and built to last, transforming your living space to match your lifestyle and vision.
From full rewires and plumbing to finishes and decor, our London refurbishment team ensures top-tier quality in every detail.
Our Happy Clients!
Open up walls and fit new open plan kitchen
Ron D.
New bathroom
Lillian A.
Bathroom Refurbishment
Harmony Build team were absolutely great – I cannot fault them. Very professional. They worked so hard on my bathroom and completely transformed it – so much so that I hired them to renovate my kitchen, downstairs flooring, toilet and garden decking. I won’t hesitate to have them back in the new year to complete some other jobs. Very happy customer! Penny
Penny B.
⭐⭐⭐⭐⭐ 4.7/5 on MyBuilder
Rated Excellent by Our Customers
Why Choose Us
Fast & Efficient
We deliver on schedule with minimal disruption.
Experienced Team
Skilled builders with years of renovation expertise.
Transparent Pricing
No hidden costs — clear quotes and updates.
Quality Guaranteed
Workmanship backed by our satisfaction guarantee.
Our Recent Projects
Just a highlight of our recent project, for more pictures and details please visit our Gallery.
Ready to Discuss Your Project?
Get a free, no-obligation quote for your renovation, extension, or conversion project.