A carbon-neutral building emits no CO2 and uses no fossil fuels. To achieve this, the energy demand must be reduced and the remaining energy demand must be met by renewable energy. Source: Vlaanderen.be

Freestone can audit your buildings, make a stay-stretch-leave analysis, and map out the necessary investments to ensure that your property becomes energy neutral.


Before we start organising site visits, we will first determine an objective assessment framework. In a strategic workshop, together with the client, we look at what criteria are relevant for them to assess, apart from the energy aspects.

We record this framework and take it with us to the building visits.

Pexels kaboompics com 6229

By means of a condition measurement, we map out the current state of the buildings (what is the condition of the joinery, roof, façade, insulation, state of maintenance, etc.).

This examination of the buildings is done according to the NEN2767 standard.

NEN Doorlichting

After mapping the current state of the buildings, we carry out a potential scan in order to propose energy improvements. These improvement proposals are always linked to a CO2 reduction: each energy improvement measure has a saving on the primary energy consumption, which in turn has a direct correlation with CO2 emissions.

In this way, we can evaluate the feasibility of moving towards "carbon neutrality".

Matthias heyde a BGYL ue5xo unsplash

All information of all buildings is put together in a matrix, so that we can analyse on a patrimonial level whether a certain building or site has to be preserved and improved (STAY), whether it will be preserved for the time being, possibly including improvements (= STRETCH), or whether it can be decided that a building has to be abandoned.


Interested to see if we can also put your organisation on the road to carbon neutrality?