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Welcome to the GCM Group Website

GCM Security Ltd and GCM Cleaning Services & Supplies operate together as GCM Group. We are a trusted, reliable and professional security, cleaning and facilities company based in Dublin and serving Dublin and the surrounding areas.

We keep your business secure, safe, clean and maintained to give you peace of mind as you progress with what you do best – running your business. GCM Group is unlike any other security, cleaning and facilities company as we care about our clients and go the extra mile to give complete customer satisfaction.

Providing any of our services to your business or home is our business that we take great pride in and we take this responsibility very seriously.

Call us today for a quote at 01-4505858 or drop us an e-mail here.


Security Services

Trusted, Professional Security Services for Retail Premises, Licensed Premises, Apartment Blocks, Building Sites, Offices, Hotels.


Cleaning Services

Our broad range of professional Cleaning Contractor Services include Office, Retail and Factory, Window, Domestic and Carpet cleaning.


Property Maintenance

Professional, High Quality Plumbing, Building & Garden Maintenance, Gas and Oil Heating Services, Repairs, Fit-outs, Tiling & Painting.



  • Francis Timmons
    GCM Security provided a very professional service from start to finish and his work was tidy , clean and of a really high standard. I would have no hesitation in recommending his company to anyone needing security equipment. The cameras he installed are easy to use and have provided us with peace of mind and we feel very safe and secure.
    Cllr Francis Timmons
    Clondalkin area Independent Councillor
  • 5
    GCM Group are extremely professional in all their services in security and cleaning. They provide all staff in proper uniform and all staff go the extra mile. They're available 24/7 for alarm and key holding, instead of my having to get out of bed at 4am when an alarm goes off.
    Martin Tynan
    PropertyTeam Tynan Moran, Kimmage, Co. Dublin
  • 5
    In all my dealings with GCM, they have displayed a strong level of professionalism. They take the time to understand an issue and share their expertise in a fair and clear manner. The needs of their client are always their primary concern.
    Michael Higgins
    Chief Executive Officer at ACE Enterprise Park