BTR & Residential Block Maintenance in London
One maintenance contractor for the HIUs, CIUs, fan coil units, MVHR, building management system and compliance certificates across your building or portfolio. Written report per unit, block-level documentation, 24/7 line.
SAV Advanced HIU Service EngineerREFCOM F-Gas certified REF1024168NICEIC certifiedSafeContractor approved
Mainteniq provides planned maintenance for build-to-rent schemes, residential blocks and housing association estates across Greater London and a 120-mile radius from our Westminster SW1 base. One contract covers every heat interface unit, cooling interface unit, fan coil unit and MVHR unit in the building, the plant room and building management system that serve them, the EICR, PAT, TM44 and F-Gas certificates the building needs, and a 24/7 emergency line with a 4-hour response. Pricing is per unit with block rates, resident access is coordinated by us with your team, and every visit produces a written report you can forward to the freeholder, the operator or the residents.
What We Maintain in a Residential Block
The systems that generate resident complaints when they fail, covered by one contractor.
HIUs and communal heating
Per-flat heat interface units serviced on an annual programme, plant room and heat network checks, SAV certified engineers.
CIUs and communal cooling
Cooling interface units on combined heating and cooling networks, serviced alongside the HIUs on the same visit.
FCUs and MVHR
Fan coil units in apartments and amenity spaces, MVHR filter changes and airflow balancing across every flat.
BMS and controls
Building management system maintenance and optimisation so the plant runs efficiently and faults are flagged before residents notice.
Compliance certificates
EICR, PAT, TM44 and F-Gas records across the building on one schedule, with renewal dates tracked.
Emergency repair
24/7 line with a 4-hour response for heating, hot water, cooling and ventilation failures, priority for contract clients.
What Does BTR Maintenance in London Involve?
Build-to-rent maintenance is the planned servicing of the shared and in-flat mechanical systems that a single operator is responsible for: the communal heat or cooling network and the HIU or CIU in every apartment, the fan coil units and MVHR ventilation, the plant room and controls, and the statutory certificates that go with them.
Because a BTR operator owns the whole building, the cost of a failure is not one leaseholder's problem but a resident experience score, a void, or a rent review. That changes the economics: an annual programme that keeps every HIU delivering hot water in seconds and every FCU quiet is cheaper than the reactive call-outs, resident credits and reputational cost of letting units fail in January. Our planned versus reactive cost guide sets out the numbers.
Who Is Responsible for HIU Maintenance in a Block of Flats?
The heat interface unit is part of the communal heating infrastructure, so responsibility sits with the building owner, freeholder, BTR operator, managing agent or heat network operator, not the individual resident, and in practice one contractor holds a contract covering every unit in the building.
The Energy Act 2023 brings heat networks under Ofgem regulation with performance and consumer-protection expectations for operators, which makes documented, planned HIU maintenance the practical foundation for compliance. We service HIUs on an annual cycle (six-monthly for older or high-occupancy units), record readings for every unit, and provide block-level documentation the operator can produce on request. See our HIU maintenance service and the guide on how often an HIU should be serviced.
How Is Access to Apartments Arranged?
We plan the programme with your building team, issue resident notices with dates and time slots, work floor by floor, and log every apartment as completed, no access, or follow-up required, so the operator has a clear record and nobody is chased twice.
No-access units are rebooked into a sweep-up day at the end of the programme rather than left open, and where a concierge or porter holds keys we work through them. For occupied prime and short-let apartments we offer time slots outside working hours so residents are not disturbed. The same programme covers the amenity spaces, gym, lounge and plant rooms, so the whole building is done in one pass.
Can One Contractor Cover Heating, Cooling, Ventilation, Controls and Compliance?
Yes. Mainteniq is REFCOM F-Gas certified, NICEIC certified, SAV HIU certified and BMS trained, with gas work by Gas Safe registered engineers, so a single planned maintenance contract covers the systems that would otherwise need four or five specialist contractors.
That matters most on the day something fails: the engineer who arrives can diagnose whether a cold flat is the HIU, the plant, the controls or the electrics, and fix it, rather than reporting that it is someone else's contract. It also means one report format, one renewal calendar and one number for your residents' services team to call.
How a Block Contract Works
Asset survey
We walk the building, record every HIU, FCU, MVHR unit and plant item by flat and location, and note the manufacturer and age of each.
One annual programme
A visit schedule per unit and per plant item, timed around occupancy and access, with resident letters and time slots handled by us with your team.
Reporting you can forward
A written report per unit with readings, a service certificate per unit, and block-level reporting for your compliance file and your client.
One number for everything
A named contact, a 24/7 emergency line, and one contractor for heating, cooling, ventilation, controls and compliance rather than five.
Who We Work With
BTR operators
Single-ownership schemes where resident experience and void reduction drive the maintenance programme.
Managing agents and block managers
Leasehold and mixed-tenure blocks where the agent needs documentation for the freeholder and residents.
Housing associations
Estates on communal heating where bulk HIU servicing and compliance records are the priority.
Developers at handover
Post-completion snagging, controls commissioning and a maintenance programme that starts on day one.
Blocks on district heating in Southwark, Tower Hamlets and Wandsworth, and prime residential in Westminster and Kensington and Chelsea.
Get a Proposal for Your Block
Tell us the building, the number of apartments and what is installed. We survey, then send a programme and a per-unit price.
Contract clients get priority on the 24/7 line. Emergency repair