Belfasts
Internal Cleaning
Services
Reliable Domestic, Commercial & Specialist Cleaning for Spotless Interiors
Diamond Property Maintenance NI
At Diamond Property Maintenance (DPMNI), we provide trusted, professional internal cleaning services in Belfast and across Northern Ireland. Whether you’re a homeowner, landlord, office manager, or site supervisor, our experienced cleaning team delivers spotless results, tailored to your space and schedule.
From one-off deep cleans to contract cleaning and post-construction tidy-ups, our internal cleaning services are designed to create safe, hygienic, and welcoming environments for everyone who lives, works, or visits your premises.
What We Clean
We provide reliable, efficient, and environmentally conscious cleaning for residential, commercial, and agricultural clients.
DomesticCleaners
Trusted, thorough home cleaning tailored to your property and lifestyle. Ideal for families, working professionals, and elderly clients.
CommercialCleaners
Reliable, discreet cleaning for retail stores, showrooms, and business premises — keeping work environments clean and professional.
BuildersCleans
Fast and detailed post-construction cleans for building firms, renovators, landlords, and property developers. We remove dust, paint splashes, and debris so your space is move-in ready.
DeepCleans
Intensive, top-to-bottom cleans ideal for spring refreshes, hygiene resets, or properties that need extra attention.
OfficeCleaners
Keep your workplace fresh, productive, and sanitised with regular office cleaning — including desks, kitchens, toilets, and high-touch surfaces.
Hard FloorCleans
We clean, restore and maintain all types of hard flooring — from vinyl and tile to stone and wood. Removes grime, restores shine, and improves safety.
End of Tenancy Cleans
Moving out or managing rentals? Our end-of-tenancy cleans ensure your property is spotless and deposit-ready.
Daycare FacilitiesDeep Clean
Sanitised, child-safe cleaning tailored to nurseries, playgroups, and care facilities. Discreet and DBS-checked staff available.
CarpetCleaning
Deep-cleaning for carpets and rugs to remove stains, allergens, and odours. Restores softness and freshness to every room.
Frequently Asked Questions
It depends on the size and condition of the space, but most deep cleans take 3–6 hours for a standard home or office.
Yes — we bring all necessary equipment and eco-friendly products. Let us know if you have any special requests or sensitivities.
Absolutely. Our team is fully insured, trained, and background-checked to ensure professional, trustworthy service.
Yes — many clients combine deep cleaning with carpet cleaning, or book a builders clean and end-of-tenancy at the same time.
We clean kitchens, bathrooms, bedrooms, floors, windows (internal), appliances (on request), skirting boards, radiators, switches, and more.
Six Reasons For People Choosing Us
Experienced Team
Our time-served tradesmen are PASMA and IPAF-trained professionals, ensuring safe and efficient service.
Comprehensive Insurance
We carry £10 million public liability insurance and specialized SSR insurance for your peace of mind.
Eco-Friendly Cleaning
We use child-safe, animal-safe, and plant-safe cleaning solutions to protect your environment.
Proven Track Record
With over 1,400 satisfied customers, we’re trusted by homeowners and businesses alike.
Tailored Solutions
Every job is unique, which is why we provide a free consultation and custom plans based on your needs.
Local Expertise
We understand the unique challenges in North Down and Antrim, tailoring our services to meet the specific needs of your area.
Ready to refresh and restore your property's interior?
Book Your Internal Cleaning Quote Today
From spotless homes to shining workplaces, DPMNI is your go-to team for internal cleaning services across Northern Ireland.