Solen, the new natural light indicator in the real estate sector

Real estate professionals, make a difference by valuing the natural light of your property and win more mandates.

They trust us

Groupama Immobilier
Square Habitat
A Vendre A Louer
Property Partners

You can also become a natural light expert

How is the natural light indicator presented?

The simplified certificate

This summary can easily be published on real estate advertisements, it provides three pieces of information :

Natural light

Natural light

It corresponds to the average number of hours per day where the natural light is sufficient to read a book without having to turn on the light. This value takes into account the weather of the location

Direct sunshine

Direct sunshine

It corresponds to the average number of hours per day where the sun enters the room

Comparaison with the city average

Comparaison with the city average

This average is calculated on the basis of the properties analysed in the same town

The certificate in detail

You can provide it to your clients during the visit of the property, it contains two addtional pieces of information:


The time slots of natural light and sunshine for each season

Moyennes par mois

The average number of hours of natural light and sunshine for each month of the year


How does it work?

Why do they use Solen?

Property Partners Agency

« I use Solen as an argument when looking for mandates, at the end of the interview, it’s a real asset. Thanks to Solen we can provide selling points to owners and prove to non professionals the bright potential of a property, even in rainy or dark weather. »

Square Habitat Agency

"I use Solen certificates on each of my exclusive mandates beause it differentiates ourselves from competitiors. The certificate provides additional information to buyers. Solen sends a very professional image to Square Habitat."


"We had a property exposed East without any direct light except at sunrise. Despite this, the appartment had wide openings in each room and the result of the Solen certificate shows a good natural light, contrary to what we first thought."

How is this indicator calculated?

In order to obtain an objective and precise result, our calculation of natural light and sunshine is done easily thanks to a mobile app. Our algorithm takes into account the following parameters:
Orientation and opposite view
Location and surface of the room
Size of the windows
Natural light,
3rd choice criterion

Natural light,
3rd choice criterion

  • A key argument to get hold of exclusive mandates
  • An expertise to renegociate your mandates
  • A story to tell to help your buyers to project themselves
You are a developer?

You are a developer?

Solen also offers a specific solution for your profession