Home Improvement & Local Building Contractors London2018-11-13T12:01:16+00:00

Home Improvement Contractors: London #1 Local Builders

With over Residential Home Improvements and Commercial Building Services, including home extensions & loft conversions, basement tanking and waterproofing, kitchen and bathrooms.


We undertake all responsibilities from architectural design to building regulations and local authority approval.

design and build

We undertake all responsibilities from architectural design, planning permission and local authority approval.


we offer a value for money services, with a wealth of ideas and solutions that can enhance the architecture of your space.

We Offer Solutions

Our skilled architects work with an in-house team of highly experienced contractors, delivering high quality finishes every time.


We have over 40 years engineering experience, and have built up a highly qualified and experienced team.

project management

Our in-house quality control team monitor every aspect of construction insuring completion on time, within budget and to the highest standard.

Heating design

Our build process involves the use of the quality materials installed by skilled tradesmen. We insure completion on time.

Quality Control

Whether you’re fitting an underfloor heating system over we’ll find a perfect solution for any room in your home.
Often Challenged – Never Beaten

Residential Services

We are highly professional design and build Home Improvement Contractors based in London.
For a fraction of the cost of moving house, our team of skilled building contractors can create quality additional space in your home.

Commercial Services

As an experienced design and build Building Contractor in London we specialise in school premises, and how they require a unique building contractor to respond to their needs.
Our skilled teams deliver larger refurbishment projects, from moving classrooms to washroom cubicles and facilities.

Check out some of our Previous Projects !

With over 5,000+ Clients and counting, Diligent Developments is the most complete and trusted building contractor in London.

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Home Improvement Contractors

Expert Advice

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Home Improvement Contractors

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I can’t speak highly enough of Seb and his team, who spent four months totally gutting my property and turning it into a show home. They aim for perfection, a quality which is hard to find these days, and that’s one of the main reasons I picked them. I can’t stand it when things aren’t quite straight or aren’t quite right. Fortunately for me, neither can they. I had to move out while the work was going on but felt totally confident that everything would be done properly in my absence. Great job – well done guys and thank you.

We are long established estate agents, and have been using Diligent Development, on our team of contractors, for our property management for over ten years.
They have delivered fast, efficient and friendly service, important for impromptu tenants’ and landlords’ repairs requirements. They have been equally attentive, from the little niggling jobs to the more extensive refurbishment projects.
This firm is trustworthy and can be relied on to undertake works in the absence of the occupier; frequently the case.

4.9 of 5 stars
15 reviews
5 stars – 13
4 stars – 2

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