PASMA Certified
Our crew are fully certified by the Prefabricated Access Suppliers and Manufacturers Association for safe use of mobile access towers.
Belfast's window cleaning service, built for how you actually live
Diamond Property Maintenance NI started with a simple observation: window cleaning in Belfast was still running on phone-call bookings, cash payments, and guesswork about when the cleaner would arrive. We built something different.
Who we are
DPMNI Ltd is based at the Innovation Factory on Springfield Road, Belfast. We operate across Greater Belfast with a crew of trained and certified window cleaning professionals. Every team member holds PASMA and IPAF certification for safe work at height, and the entire business is covered by 10 million pounds of public liability insurance.
Our focus is residential window cleaning done on a reliable, transparent recurring round. We use pure-water pole-fed technology that works from the ground and leaves a streak-free finish without chemicals. You get an instant price online, a set service day for your area, and live tracking on the morning of every clean.
Certified, insured, and accountable
IPAF Certified
Indoor and outdoor powered access training certified through the International Powered Access Federation, covering safe equipment operation at height.
10M Public Liability
Full 10 million pound public liability insurance on every visit, protecting your property throughout the cleaning process.
1,400+ Customers Served
Over 1,400 happy customers across Greater Belfast trust DPMNI for their recurring window cleaning round.
What we promise every customer
You set the schedule, we keep it
Once your address is on the round, your clean happens on the same day each cycle without any prompting from you. No reminders, no chasing.
You pay after, not before
Your card is charged when the job is done. If we do not show up, you do not pay. Simple as that.
No lock-in, ever
No contract, no minimum term. Skip, pause, or cancel anytime from your account.
You see exactly where we are
On the morning of every clean a live map shows your crew location and arrival time. No more waiting in all morning.
Get in touch
Diamond Property Maintenance NI
Office 3:01, Innovation Factory
385 Springfield Road, Belfast BT12 7DG
Monday to Saturday, 9:00 to 17:00
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