0 % of our lives

are spend indoors, creating a dependency from our well-being on the quality of the world we live in.

Ostate embeds quality while predicting if real estate (re)developments are feasible. Ostate uses an integral approach of multiple technical disciplines that are fitted to the standards, lets you compare multiple scenarios flexibly and shows visual results to make it fully understandable.

Ostate has four modules with seperate purposes

Module 1: 

Urban massing studies

Module 2: 

Energy efficiency & comfort quickscans

Module 3: 

Full engineering for new designs or renovations

Module 4: 

Hightech analyses for the most difficult questions

Target groups for Ostate

Real estate developers

Optimise your development plan on its gross/net ratio’s whilst easily taking into account multiple engineering facets.

Asset owners & -managers

Predict the effectiveness of retrofitting your assets or portfolio up front through integral exploration studies.


Iterate through your design process faster and use understandable visuals to communicate with others.



comfort (ISO)


The urgency of using Ostate

0 %

of the population lives in urban areas in 2050

> 0

different standards and norms relate to sustainability

0 %

of the global energy consumption is used by buildings.


buildings are in need of refurbishments in the EU

The process

1) Project intake

You set the output goals, we check the input requirements.

2) 3D attachment

We create or use a 3D model to attach our algorithms to.

3) Calculation...

We calculate the necessary aspects and variants.

4) Reflection

We share interim results for verification or other wishes.

5) Final results

You receive the final outcomes by preferred method and style.


The benchmarks of the technical calculations

Previous clients

Pricing model

ticket per used module
  • Module 1 Urban Massing analysis
  • Module 2 Quickscan
  • Module 3 Design/renovation analysis
  • Module 4 Hightech analysis



No joke, we recommend you to use Ostate as soon as possible since the core of our system is to eliminate wrongly decisions up front. You can easily predict through Ostate whether your ideas will work or not, instead of an (unfortunately) usual process where you could find out wrongly decisions when the contractor is already trying to install everything. 


We live in a digital era where wizzkids can create beautiful codes that work really fast with help of a huge digital toolbox that we are enlarging every day. Most likely we already have some handy tools prepared if you ask us for specific questions.

What we do is we check during the intake whether we can answer your question straight away or if any codes needs to be adjusted on a specific project. If change is needed for large parts of a code, we charge you a fee on top of the project (that we directly communicate during the pricing offer) but if these changes are small or inevitable to improve our product we do not charge these.

For full scale development of other software (not applicable on Ostate projects), please contact us directly. We would like to hear your idea!

Not yet, we have noticed that large parts of the regulations and building code do not comply with innovative new methods of calculating these (same) principles. On your project, we can show you how the results connects to BREEAM, WELL, LEEDv4.0, NEN2580, NTA8800, NEN2750, NEN1087, and NEN7120.

We have applied for several building projects that turned out okay, but we cannot guarantee that all municipalities or checking organisations will comply with our method. 

We mainly use Ostate now as steering wheel from a conceptual phase of a project towards the definite phase and we give over the stick to ‘regular’ engineers for that last mile to write the final reports and jurisdiction. Our systems do gives the outcomes in such way that other engineers can use these numbers straight away in order to minimise possible transaction hassles.

Certainly, we have programmed Ostate in such way that is accounts for unknown variables. We must state that the very cliche bullshit in-bullshit out rule also accounts for Ostate. Therefore, the less information we have, the more of a range you get in the most likely outcomes and performance of your building.

It ofcourse depends on the stage in which your project is and the amount of detail needed for the calculation. For new real estate developments, we can account for setting up a 3D model. For existing buildings we have to check per project proposal how feasible this is.

Yes, comfort is highly subjective.

Nevertheless, comfort has been researched extensively and therefore we can nowadays make really educated guesses on the comfort performance of a building (e.g. read the book: The Healthy Indoor Environment from Philomena M Bluyssen). So comfort has been encapsuled by the ISO7730 norm with a quantified scoring method that we also use (called the PMV score and the PPD score). However, this norm is almost only referring to thermal comfort whilst human senses go much further than that.

For determining comfort in broader sense we also use light intensity and nuisance, sight amounts, sound, and experience as it is described elaborately in the WELLv2.0 norm. This does not come down to one exact score but gives a full overview of all aspects that make up comfort together.

[p.s. we are secretly working on a scoring method for comfort though ;-)]

The energy balance is calculated by comparing all energy consuming systems with all the energy providing systems that are in the building for an average year wherein the building is in use. First, our algorithms determine what the outdoor climate conditions are of the project location and how the indoor climate conditions should be arranged and with what schedules. Then, we check how much people are usually there in each zone. Finally, we fill out the amount of systems and types of systems per zone.

We can show you the amount of total energy consumption, the total energy production, or if the balance is going to a energy neutral building. 

We can also do this process backwards, say, you have a building and want to reach a certain score on energy; what can you do to get there? How much PV-panels are needed? Or do you need to adjust the windows or facade?

We would ofcourse say that every project is applicable since people are probably going to live or work there, or energy is going to be consumed, or light has to be appearant (or not).

But in honesty there could always be a catch that we, or you, did not account for, so we have to find out together for very exotic projects. So please do not hesitate to ask.

What are you looking for? Do not hesitate to reach out to us.