Build-to-rent that costs less to run.

Build-to-rent is one of the few residential models where the developer is also the long-term operator, so the building’s running performance lands on the same balance sheet that built it. Passivhaus turns that into an advantage: very low energy demand, low maintenance plant, and a comfortable, quiet, well-ventilated home that tenants stay in. Lower operating cost, lower voids and fewer complaints all feed net operating income over the hold period, the number BTR investors care about most.

Comfort drives a lot of tenant churn. Cold rooms, condensation, mould, noise and high bills generate complaints, callouts and move-outs. A certified Passivhaus runs at even temperatures with filtered fresh air and controlled humidity, so the common causes of complaints are designed out. Fewer complaints means lower management cost, and better retention means fewer void weeks, which is income you do not get back.

In build-to-rent the split of energy cost varies, but it matters either way. Where the operator carries common-parts and plant energy, Passivhaus cuts that bill directly. Where tenants pay, low and predictable bills are a letting advantage in a competitive market and protect tenants from energy-price shocks, which reduces arrears risk. Either way, in-use monitoring through Pulse lets the operator see and prove the performance rather than assume it.

Institutional BTR capital increasingly reports against ESG frameworks and accesses green or sustainability-linked finance that rewards measured performance. A certified Passivhaus with continuous in-use data holds up well in that context: the performance is third-party certified and then evidenced in operation, not self-declared.

Yes. Minimum energy efficiency standards for rented property keep tightening, and a building designed only to today’s baseline is designed to need upgrading. Passivhaus and EnerPHit sit well ahead of the regulatory direction in both Ireland and the UK, so a BTR asset built or retrofitted to the standard protects its lettability and value as the rules move, including the damp-and-mould duties that now bear on the rented sector.

Yes. We work across large multi-residential and rental schemes, including Urbanest student-and-residential developments and 2 Trafalgar Way in Canary Wharf (1,672 bedrooms and 80 apartments), and cost-rental and social schemes such as Shanganagh Castle (550+ homes) and Whitehaven for Cairn, the latter monitored in use across 255 homes. We understand the operating economics of rented stock, not only how it is built.