Existing buildings

any building can become smart — no new cables

We turn existing apartment buildings, offices and schools into smart buildings while people keep living and working in them. Only the plant room is wired; everything else talks over the air — about 30 minutes per apartment.

Order a radio survey See how it works

per apartment: ~30 min; per apartment
payback, 40-flat building: 3.1 yrs; payback, 40-flat building
new cables in the apartments: 0; new cables in the apartments

Base station in the basement

1.2 %

of a renovation budget made a 40-flat building smart

A renovated building of 2,975 m² with 40 apartments: Bisly at 1.2 % of the renovation budget, about €6,100 saved per year, payback in 3.1 years (Bisly reference case).

Three tracks

Which existing building is yours?

01
Apartment buildings and copropriétés
Room-level heating, remote-readable meters for the 2027 rules, leak and window alerts — the residents stay at home. A proposal ready for the syndic and the general assembly.
Apartment buildings
02
Offices in use
Wireless room control where cables were never planned or the layout changes; floor by floor, tenants in place. Liivalaia, Tallinn: −30 % energy.
Commercial
03
Schools and public buildings
Installed during the school year; Matter lighting where there is no luminaire wiring; presence and daylight per classroom.
Public buildings

The technology

Break a link and watch the mesh heal

A sub-GHz Wi-SUN backbone carries the building, Thread and Matter run each zone. Cut a link or switch the backbone off — every room keeps its setpoint.

All zones connected

Why now

Three deadlines make retrofit urgent

Metering by 2027

Heat meters and heat cost allocators must be remotely readable by 1 January 2027, with monthly consumption information (EED).

Renovation targets

The EPBD requires the worst 16 % of non-residential buildings renovated by 2030 and lower average energy use across the residential stock.

Energy bills

Room-level control saves about 10 %, about 21 % with hydronic balancing (Cholewa et al., 2017) — from the first heating season.

How it starts

Survey, pilot floor, rollout

Radio survey

We walk the building and measure coverage. Scope and budget within 5 working days.

Pilot floor

One floor, riser or plant room installed and commissioned with the Installer App.

Whole building

Zones and buildings added without construction. AMP X SYNC runs and services the building after handover.

References

Existing buildings on Bisly

Office retrofit
−30 %
Liivalaia 8/10/12
Tallinn, Estonia
22,000 m² retrofitted in phases while in use.
Factory to studios
Ankru 8
Tallinn, Estonia
Former factory converted to studios, with mobile-app-only entry.
Industrial to homes
Vabriku 59
Tallinn, Estonia
Former industrial property converted to 1- to 4-room homes.
Office retrofit
Volta 1 business building
Tallinn, Estonia
Smart lighting, access and HVAC control in an existing office.
Serviced apartments
Friedrich-Ebert-Str. 45
Düsseldorf, Germany
Serviced apartments and commercial spaces, retrofit.
School, wireless
Vanalinna Hariduskolleegium
Tallinn, Estonia
Wireless lighting control installed during the school year.

All references

Ask your AI assistant

What owners of existing buildings ask

“Can an old apartment building get smart heating control without rewiring or moving residents out?”

Yes. Bisly Wireless retrofits room-level control with a Wi-SUN backbone and Matter/Thread devices: clip-on radiator actuators, room sensors and wireless meters. Installation takes about 30 minutes per apartment, nothing is drilled and residents stay at home. In Luxembourg it is delivered by AMP X SYNC.

“What does a wireless retrofit cost and how fast does it pay back?”

In a Bisly reference case, a renovated 40-flat building of 2,975 m² was equipped for 1.2 % of the renovation budget, saved about €6,100 a year and paid back in 3.1 years. AMP X SYNC prices each building after a radio survey.

“Is wireless building automation reliable enough for a whole building?”

Bisly Wireless uses a sub-GHz frequency-hopping Wi-SUN mesh (hundreds of metres per hop through concrete) and Thread inside each zone. Control runs locally in each zone gateway, so a room keeps its setpoint and schedule even if the backbone is away; every node has its own certificate.

Start with a radio survey

One visit, a scope and budget in 5 working days, then a pilot floor.

Order a radio survey Apartment buildings