Over time, old buildings lose energy efficiency. New building standards and techniques can redress this problem. A comprehensive renovation will help you cut your energy consumption. Our team of experts is exactly the partner you need for purposeful, efficient planning and implementation. We will ensure that your project runs smoothly whilst avoiding unnecessary costs through our broad experience, know-how and forward-thinking approach.

We take on projects ranging from single-family houses to large developments. We would be happy to advise you and help you reduce the energy footprint of your property. Please do not hesitate to contact us at any time. The initial consultation is free of charge.


Peter Fritz

Managing Director

Dipl. Bauführer Hochbau IBZ

T +41 31 985 23 50

Urs Bänziger

Project Manager

Dipl. Bauleiter Hochbau
CAS Energieberatung
FHZ / GEAK-Experte

T +41 31 985 23 34

Beat Jenni

Project Manager

Eidg. dipl. PL Gebäudetechnik

T +41 31 985 23 35

Martin Ellwanger

Project Manager

Dipl. Bauführer SBA/HF
CAS Projektmanagement Bau

T +41 31 985 23 36

Jacqueline Kräuchi


Main contact

Weiss+Appetito AG
Giacomettistrasse 1
3006 Bern

T +41 31 985 23 23


Modernising buildings wisely –
your contribution to our environment

A clear view of the facts: Cantonal Building Energy Certificates. Weiss+Appetito is authorised to issue Cantonal Building Energy Certificates (GEAK®) and has experts certified for this purpose available. GEAK certificates provide information on the building's energy-related quality, anticipated energy costs and energy requirements class (A to G).

The GEAK Plus is a Cantonal Building Energy Certificate with an additional consultative report drawn up by a GEAK expert. The report includes options for modernising the building envelope, heating, hot water production, electrical equipment and building services. All the work items are listed in detail, including costs and subsidies. Based on the overview of costs for the various types of work, the options help building owners to reach their decisions; they also show what energy savings are possible. Depending on the canton, the GEAK Plus may also be the basis for calculating and paying out subsidies. For more information, visit:

Relax and enjoy the benefits thanks to wise, professional advice. A complete building renovation that is planned well and executed properly can save up to about 25% on tax and, by obtaining subsidies, up to about 8% of the investment costs.

Renovations with Weiss+Appetito – everything from one single source

Your benefit - our goal. Would you like to know how you could benefit from major savings on energy costs in your building? We will be pleased to accompany you on the way to your goal and support you in word and deed.

After Before

Everything from one single source -
We'll be glad to help you

We can offer you exactly the services you need – from consultation and planning through to execution, all from one single source. Each of these sub-steps is a self-contained offer. Clients are always free to decide how they will proceed, with no obligation. A transparent approach that actively involves the client in the procedures is a key criterion of our offers. We look forward to assisting you.

After you contact us, one of our experts will take an on-site inventory. They will use a checklist, various photographs, existing planning documents and other specific information to gain a picture of the home you own and will re-evaluate the information back in the office.

During the next customer visit, our expert will discuss the procedures with you, answer all your questions and help you reach your decision. The bank will also use the report for any financial investigations that may be needed.

As the next stage, three different renewal strategies will be developed, including information on costs, energy-saving potential and a cost-effectiveness calculation for each option. The building energy labels act as visual aids for assessing each variant.

Once an option has been selected, the next question is: who will plan and coordinate the work to be undertaken by the various contractors? We – the Weiss+Appetito AG
"Energy+Renovation" team – can also support you here. As a full-service general contractor, we have the expertise to take charge of the modernisation contract, including all the necessary planning, supervision and execution work, and we will provide you with one single expert as your contact.

Our services




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