South London based · HMO landlords & letting agents · Compliance-ready documentation
Running a House in Multiple Occupation in London? We specialise in room lock changes, communal door repairs, fire door hardware, and master key systems for HMOs — keeping your property compliant, your tenants secure, and your licence review straightforward.
HMO Specialist Services
From room cylinder swaps between tenancies to communal door repairs and fire door compliance — we support HMO landlords and agents across London with prompt, transparent-pricing service.
Cylinder replacements on individual room doors between tenancies. We fit BS3621-compliant cylinders — including TS007 3-star anti-snap options such as Ultion or Brisant Secure where needed — and provide new keys on the spot.
Broken communal door locks, failing multi-point mechanisms, worn closers, and damaged frames repaired or replaced. We carry common parts so most jobs are finished on the first visit.
Fire doors inspected and repaired to FD30/FD60 standards — closers adjusted or replaced, intumescent seals checked, hinges tightened, and letter box cold seals fitted. Work documented for your HMO licence records.
Master key suites fitted so landlords and agents hold a single key for all rooms while each tenant's room key opens only their door. Ideal for HMOs with 3–20 rooms — we plan the system and supply the cylinders.
Tenants locked out of their room or the communal entrance at any hour — we respond promptly and gain access without unnecessary damage. Available any time of day or night.
We provide written confirmation of all lock changes and fire door hardware work — useful for HMO licence applications, council inspections, and letting agent audits.
Why BLD
HMO landlords and letting agents across London use BLD for lock changes between tenancies, fire door compliance checks, and emergency cover. We understand the pressures of HMO management — fast turnaround, clear documentation, and no surprises on the invoice.
Coverage
South London based — rapid response for HMO properties across London with no call-out fee.
FAQ
Yes. We carry out same-day room cylinder changes between tenancies across HMOs. We supply BS3621-compliant cylinders and can key multiple doors to a master key system so landlords retain access while each room remains private.
Yes. Communal entrance locks, door closers, and multi-point mechanisms on HMO front doors are repaired or replaced on the same visit in most cases. We carry common parts to avoid return visits.
Yes. We inspect and repair fire door hardware including closers, intumescent seals, hinges, and ironmongery. We document the work which supports your compliance records for HMO licensing inspections.
No — there is never a call-out fee. We confirm a fixed price before we start. You pay only for the work completed.
Transparent Pricing
No call-out fee. We confirm a fixed price over the phone before we start.
| Service | Price | Typical time |
|---|---|---|
| Room cylinder change (per door) | Call for a quote | 20-30 mins |
| Master key system (per door) | Call for a quote | survey needed |
| Communal door lock replacement | Call for a quote | 45-60 mins |
| Fire door closer replacement | Call for a quote | 30-45 mins |
| Bulk room changes (5+ rooms) | Discounted | half day |
Same-day available · No call-out fee · Upfront fixed quote · Compliance documentation provided