Your partner for energy-efficient living

Minimum effort for maximum support: This is what IKOSIA offers you! Our energy consultants will accompany you through the funding jungle and secure you the highest possible state funding for your energy renovation - without any headaches.

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for free

not binding

Window -1,040 kWh

Heat pump -2,000 kWH

Solar thermal energy +2,400 kWh

Energy costs saved
2,250 €/year

Sustainable Home

What services can you use from us?

1,690 €

from 390 €

isfp planning

Your individual renovation roadmap (iSFP)

  • Our energy consultants will inform you about suitable renovation measures.
  • Get 5 percent bonus funding for your renovation project without any obligations.
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240 €

isfp planning

Your funding application from BAFA or KfW

  • Find out about BAFA funding and KfW loans to finance your renovation.
  • Choose the right funding – our experts will advise you.
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your advantages


Certified experts

Our energy efficiency experts are qualified engineers and architects and are always up to date through regular further training.


Competence for your building type

IKOSIA is your competent partner for all types of buildings. In addition to private homes, our advisory services also include non-residential buildings and listed properties.


Maximum funding

We are experts for the KfW and BAFA funding programs. With our individual renovation plan you will receive the maximum funding (up to 40 percent per measure).


No long waiting times

Our energy consultants are available for you at any time. We guarantee that your project will be processed quickly - without long waiting times.


Germany-wide on-site appointments within 14 days

Arrange a viewing appointment for data collection within 14 days, regardless of where you live.

Get and compare the best offers with our tradesman offers service

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Save time and money with IKOSIA

We understand that every euro counts. That's why we optimize your renovation measures to get the best out of your finances and your energy balance.

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Analyze the current condition of your property

A certified energy consultant from your area will visit you on site. Using the latest technology, it records all relevant information about your house and your current energy consumption


Identify savings potential and renovation measures

Using the digital 3D model of your property, we calculate which measures you can take to reduce your consumption and energy costs by up to 70 percent.


Create an individual renovation plan

We will create your tailor-made renovation plan, which will secure you an additional 5 percent financial support for your project.


receive funding

We will accompany you with your application for KfW or BAFA funding and secure you the highest possible funding.


Find the best craftsmen for your renovation

To start your project, we will provide you with free and non-binding offers from competent craftsmen who will carry out your modernization professionally and quickly.

We are convinced of our offer. But don't just rely on our word

This is what our customers say

Eva S.

"From day one, the support has been exemplary. Whenever we had a problem or question, they were just a phone call away. It's refreshing to experience such good support!"

Mahendra R.

"It's rare to find local experts with such extensive knowledge and commitment. Their insights made the difference in our project. Kudos to the team!"

Mark M.

"I've worked with several companies, but this team's quick turnaround really stands out. We were up and running within a few days. Very impressed!"

What our customers say



Customers recommend IKOSIA


Renovation calculators can now determine savings.

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There are now alternatives to gas and oil heating

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Get and compare the best offers with our tradesman offers service

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Do you manage a real estate portfolio or are you a business customer?

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frequently asked Questions

How can I avail your services? arrow

Working with our experts is very easy: a certified energy consultant visits you on site and records all relevant data. We then calculate your specific savings potential. Using a 3D model, we will then create your individual renovation roadmap, with which you can secure an additional 5 percent state funding. Finally, we will accompany you with your funding application and, if you wish, provide you with non-binding and free offers from qualified craftsmen for your renovation project.

How much can I save on energy bills after a renovation? arrow

Your individual savings potential depends on various factors, including the size and condition of your home and your current energy consumption. Previous customers have been able to reduce their energy consumption by between 20 and 80 percent with comprehensive renovations.

How do you choose the energy consultants and tradesmen you recommend? arrow

We have a strict vetting process for our network of consultants and craftsmen. All of the companies and service providers we recommend are characterized by professionalism, expertise in the field of environmentally friendly renovation and a commitment to sustainability. Our energy consultants are also registered on the energy efficiency expert list of the German Energy Agency (dena). To ensure we maintain our quality standards, we regularly review customer feedback.

How much does the IKOSIA service cost? arrow

There are no hidden costs at IKOSIA. All prices are transparent and comprehensible fixed prices. An individual renovation plan (iSFP), for example, only costs 390 euros for one or two residential units. For three or more residential units, the iSFP costs 550 euros.

Can I get a free consultation? arrow

Of course! Arrange a non-binding consultation with one of our experts. We will answer all your questions and advise you on possible next steps — free of charge, of course.


Sustainable change, one property at a time

Improving energy efficiency for greater sustainability: All-in-one platform for comprehensive renovation measures.

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Inquire for free