We make the heat transition
affordable for owners.
Large housing companies switched their heating long ago without investing their own capital: more than 55,000 residential units already run on heat supply at a fixed price. For private and mid-sized owners this model was hardly accessible. Kola NetZero changes that.
- 55,000+residential units already in the model
- €0investment for owners
- 6+residential units per property
From property owners, for property owners
Kola NetZero is a Hamburg company. Behind us is a family office focused on real estate, Kola Invest GmbH.
We know owners' questions from our own experience: rising energy costs, poor energy classes, banks asking for the energy certificate with every financing, and retrofits that do not pay off. That is exactly why we built Kola NetZero.

We make your portfolio green. Without you investing.
Assess
We review the energy certificate and statements and tell you within a few days whether your property qualifies.
Calculate
We compare your current costs with the fixed price and give you a clear comparison.
Accompany
From site visit to offer to contract we are your contact. In person, not through a call centre.
What you can hold us to
Free for owners
From the first check to the offer you pay nothing.
Transparent
We are paid by the provider, not by you. We say so openly.
Honest
If your building does not fit, we tell you directly.
From energy class G to B in under a week
Two apartment buildings in Rhineland-Palatinate, converted without any investment by the owners. The existing boiler stays in the system, the heat pumps cover most of the heat generation.
Apartment building, 12 residential units
Figures according to the heat provider's project documentation. CO₂ on a balance-sheet basis under BEHG. Energy class indicative. Property data anonymised.
Your contact

Julian Labandowsky
FounderContact for owners and partners
Together with brokers, managers and advisers
We work with partners who know owners locally. They bring the contact, we take care of assessment, calculation and support.
Let us talk about your property.
Assessment, site visit and offer are free of charge and without obligation for owners.