About DDM

Founded by Dan Gealy

A commitment to excellence in every detail.

Design Develop Maintain was founded by Dan Gealy with a clear and uncompromising vision: to bring a new standard of quality, professionalism, and care to the building and property maintenance industry in Central London.

With extensive experience across all aspects of the building trade — from structural work and carpentry to high-end decorating and project management — Dan built DDM on the principle that every client deserves the same level of attention, regardless of the size of their project.

Operating across Mayfair, Belgravia, Chelsea, Westminster, Fulham and the surrounding areas, DDM has established itself as the trusted partner of choice for homeowners, landlords, and property managers who refuse to compromise on quality.

Our Standards

Craftsmanship is not a feature — it is our foundation.

We believe that the quality of a building project is determined not just by the materials used, but by the care, skill, and attention to detail applied at every stage. This is why we invest in the very best tradespeople and maintain rigorous quality control throughout every project.

All specialist work is carried out by fully certified professionals. Our electricians are NICEIC registered, our gas engineers are Gas Safe registered, and all structural work is carried out in full compliance with building regulations.