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Portrait ofKatja Bertsche

Katja Bertsche

Senior Associate
Certified Specialist SBA Construction and Real Estate Law

CMS von Erlach Partners Ltd
Dreikönigstrasse 7
P.O. Box
8022 Zurich
Languages German, English, French, Italian

Katja Bertsche specialises in real estate law and advises national and international clients regarding real estate transactions.

Her professional activities include inter alia real estate purchases and sales, tenancy law, real estate financing as well as the development and realisation of real estate projects. Among other things, her tasks include the performance of legal due diligences regarding real properties and development/construction projects as well as the drafting and negotiation of agreements (in particular of purchase, construction and lease agreements as well as ground leases and easements).

In 2012, Katja Bertsche completed her bilingual legal studies at the Universities of Basel and Geneva. Afterwards, she accomplished a court internship (2012–2013) and worked for a law firm specialising in construction law (2013–2015).

After her admission to the bar, she joined our firm as a real estate associate.

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Relevant experience

  • Advising Swiss Prime Anlagestiftung regarding the acquisition of a residential property with commercial base use with the "One Planet Living" Label founded by WWF
  • Advising investor regarding the acquisition of a commercial property in the Terre Bonne Park business park in the municipality of Eysins, located on the western shore of Lake Geneva
  • Advising Swiss Prime Anlagestiftung regarding the acquisition of the traditional Viktoria retirement center in Bern
  • Advising Swiss Prime Site AG regarding a portfolio transaction (asset swap) concerning three commercial buildings in 2 cantons
  • Advising an institutional investor regarding the sale of a residential building in Neuchatel
  • Advising an institutional investor regarding the acquisition of a commercial residence (land purchase agreement, construction agreement and lease agreement)
  • Advising Swiss and foreign institutional investors in connection with the acquisition of properties in Switzerland, including commercial, logistic and hotel properties as well as sale & rent back transactions
  • Advising UBS AG regarding the sale of a five star hotel in the historic center of Zurich (Hotel Widder) together with adjacent properties and the operating company
  • Advising Swiss Prime Site Immobilien AG on substantial acquisition in Winterthur
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Memberships & Roles

  • Zurich Bar Association  (ZAV)
  • Swiss Bar Association (SAV)
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  • 2016 – Admitted to the bar, Zurich
  • 2012 – Bilingual studies of Law,MLaw, magna cum laude, Universities of Basel and Geneva
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CMS advises Swiss Prime Site Immobilien AG on substantial acquisition in...
Swiss Prime Site Immobilien AG has acquired Bellevue-Bau AG from Anlagestiftung fenaco LANDI. Thereby, Swiss Prime Site Immobilien AG has taken over three fully rented premises ideally located near the...
CMS once again amongst the top law firms in Switzerland
CMS amongst the Top Law Firms in Switzerland 2018 We are pleased to be again one of the top law firms of Switzerland according to the rating by leading Swiss business magazine Bilanz and newspaper Le...
CMS European Real Estate Deal Point Study 2018
The European investment market once again had a very strong year. At EUR 234 bn, total investment volume was only 3% below the record level seen in 2015. This figure also represents an increase of 7%...


CMS advises Renaissance on the acquisition of the business operations of...
On 31 October 2023, Renais­sance, to­geth­er with industry expert Daniel Lippuner and the management of Heberlein AG, acquired the entire business operations of Heberlein AG. The acquired business will continue to operate unchanged at its current location in Wattwil with the existing management and all employees under the name Heberlein Technology AG. Heberlein was founded in 1835 and has established itself as a leading provider of nozzles for synthetic continuous yarns worldwide, developing, manufacturing, and distributing key components for the chemical fiber industry, with approximately 80 employees. Renais­sance, based in Lausanne, was founded by pension funds for pension funds and has been investing in unlisted Swiss SMEs for over 20 years.A team from CMS, led by Alain Raemy, provided comprehensive legal and tax advice to Renaissance in this transaction. CMS SwitzerlandAlain Raemy, Partner, Corporate / M&AAndrea Relly, Counsel, Corporate / M&AMark Cagienard, Partner, TaxDominik Penkov, Associate, Tax Dr. Simone Brauchbar Birkhäuser, Partner, IP / ITPhilipp Dickenmann, Partner, Dispute ResolutionReto Hunsperger, Partner, RestructuringDr. Marjolaine Jakob, Partner, Re­struc­turin­gOlivia Zingg, Associate, IP / ITHelena Loretan, Associate, Real EstateKatja Bertsche, Senior Associate, Real EstateDr. Miryam Meile, Senior Associate, Employment Anna Mast, Associate, Corporate / M&AAlexander Salamon, Lawyer Trainee, Corporate / M&A
CMS advises Lab14 GmbH on the acquisition of a majority stake in Nanosurf...
Lab14 GmbH, a portfolio company of RSBG SE, the investment company of the RAG-Foundation, acquires a majority stake in Liestal-based Nanosurf AG. Zurich, 26 January 2023 
CMS advised Trilux on the acquisition of Mono-Licht GmbH
Trilux AG acquires Mono-Licht GmbH and thus further expands its capacities in the field of architectural lighting and special luminaire production. Founded in 1997, Mono-Licht GmbH is a Swiss luminaire manufacturer based in Winterthur. The family-owned company has more than 20 years of experience in luminaire manufacturing and employs around 25 people. Mono-Licht GmbH specializes in high-quality special luminaires and project solutions, which are developed at the Winterthur site and produced in the company's own manufactory. Trilux and Mono-Licht have already been working together successfully for many years on various lighting projects. With the purchase of Mono-Licht GmbH, Trilux AG is further expanding its capacities and competences in the field of architectural lighting and high-quality special luminaire production in a targeted manner and is also consistently exploiting the valuable synergies in all areas, from product development to joint sales and marketing. Mono-Licht GmbH will continue to operate as an independent enterprise in the Swiss market.A team of CMS Switzerland led by partner Stephan Werlen provided comprehensive legal advice to Trilux AG on the transaction. CMS Switzer­land­Dr Stephan Werlen, Partner, Corporate / M&APascal Stocker, Associate, Corporate / M&AAlexandra Stocker, Associate, Corporate / M&ADr Simone Brauchbar Birkhäuser, Counsel, IP / ITKatja Bertsche, Associate, Real EstateChristian Gersbach, Partner, Em­ploy­ment­Christina Winter, Associate, Em­ploy­ment­Patrick Neher, Attorney Trainee, CommercialLucas Poschung, Attorney Trainee, Commercial
CMS advised Halder on the acquisition of Newemag AG
The Frankfurt-based financial investor Halder has acquired Newemag AG. All parties involved have agreed not to disclose the details of the transaction. Founded in 1975, Newemag AG ranks among the leading suppliers of machine tools in Switzerland with more than 400 customers in diverse markets. In addition to turning and milling machines, the product portfolio of Newemag AG also includes machining centres with the capability of 5-axis and simultaneous machining. The company has extensive technical and implementation knowhow and is well connected in the Swiss manufacturing industry. By way of acquiring Newemag AG and together with Suvema AG, acquired in October 2019, Halder establishes the leading technology provider for tailored CNC machine tools in Switzerland. Combining the competencies of Suvema AG and Newemag AG within one group enables the joint exploitation of additional growth potential. Halder is an experienced private equity investor active in the German-speaking region since 1991 supporting established businesses mainly in the sectors Industrial, Healthcare and Food & Beverage. Halder supports its portfolio companies on their journey to become market leader. Over the past 30 years, Halder has invested into 44 companies and solved 23 successions. Currently the Halder team manages 7 portfolio companies.A team from CMS Switzerland, led by Stephan Werlen, advised Halder on all legal matters of the transaction. The Zurich and Frankfurt private equity and M&A teams with the partners Stephan Werlen and Oliver Wolfgramm advise Halder on a regular basis. CMS Switzer­land­Dr Stephan Werlen, Partner, Corporate / M&APascal Stocker, Associate, Corporate / M&AAlexandra Stocker, Associate, Corporate / M&ADr Simone Brauchbar Birkhäuser, Counsel, IP / ITKatja Bertsche, Associate, Real EstatePatrick Neher, Trainee, CommercialCMS Ger­manyDr Oliv­er C. Wolfgramm, Partner, Corporate / M&ADr Dirk Baukholt, Counsel, Corporate / M&ADr Navid Anderson, Counsel, Corporate/ M&A
CMS advised NORRES, a portfolio company of Triton, on its acquisition of...
NORRES, a portfolio company of Triton Smaller Mid-Cap Fund I, acquired the Baggerman Group. The parties have agreed not to disclose the purchase price. The Baggerman Group, headquartered in Roermond, Netherlands, is a specialist manufacturer of industrial hoses, couplings and related parts. The company has subsidiaries in Italy, Switzerland, Hungary and Romania. NORRES is one of the market-leading manufacturers of industrial plastic hoses in Europe. It has production facilities in Germany, China, the US and Italy and distribution and warehouse locations in the Czech Republic, France, Poland, Sweden, Taiwan and the UK. The company, founded in 1889, employs approximately 300 people worldwide. Since November 2018, NORRES Schlauchtechnik has been part of the portfolio of the Triton Smaller Mid-Cap Fund I advised by Triton, an investment firm that invests primarily in German-speaking countries, the Nordic countries, the Benelux region, France, Italy, Spain and the United Kingdom in the industry & technology, services, healthcare and consumer goods sectors.A team of CMS Switzerland and CMS Italy, led by Dr Daniel Jenny, advised NORRES on all Swiss and Italian law aspects of the transaction. Mayer Brown, Frankfurt, acted as lead counsel to NORRES. CMS SwitzerlandDr Daniel Jenny, Partner, Corporate / M&ADr Simone Brauchbar Birkhäuser, Counsel, IPDr Ferdinand Blezinger, Associate, Corporate / M&AKatja Bertsche, Associate, Real EstateMarzia Schilleci, Associate, EmploymentCMS ItalyDaniela Murer, Partner, Corporate / M&AElsa Mora, Counsel, Em­ploy­mentA­less­andra Cuni, Associate, Corporate / M&ANicoletta Catanzaro, Junior Associate, Corporate / M&A
CMS advises on the acquisition of the drive and process technology unit...
Zurich, 18 December 2020 | Valeta AG, headquartered in Zug, a portfolio company of Frankfurt-based financial investor Halder, acquires through its subsidiary Uniprod AG by way of an asset deal the drive...
CMS advises on the sale of keyon AG
The shareholders of keyon AG, advised by CMS, have sold all shares in keyon AG to Swiss IT Security AG. keyon AG, founded in 1999 and based in Rapperswil-Jona, is a full service provider and leading provider...
CMS advises Avectris on the acquisition of Logicare AG
Avectris, a Baden-based full-service IT provider for Swiss mid-market companies, further expands its portfolio in the healthcare sector and acquires Logicare AG. Logicare, which was founded by hospitals...
CMS advised Harald Quandt In­dus­trieb­eteili­gun­gen GmbH
CMS advised Harald Quandt In­dus­trieb­eteili­gun­gen GmbH on the acquisition of a majority stake in museum software company zetcom An international team of CMS Switzerland, Germany, France and Spain as well...
CMS advises Halder on the acquisition of Sirag, Univer and Uniprod
CMS advises Halder on the acquisition of Sirag, Univer and Uniprod Frankfurt-based financial investor Halder acquires a majority stake in Swiss-based Sirag AG, Univer AG and Uniprod AG through its Valeta...
CMS advised IMCD on the acquisition of DCS Pharma AG
CMS advised IMCD on the acquisition of DCS Pharma AG Basle | Rotterdam  IMCD N.V., a leading distributor of specialty chemicals and food ingredients, acquired Swiss pharmaceutical distributor DCS Pharma...
International CMS team advises Halder on acquisition of Swiss provider...
Frankfurt/Main and Zurich – Frankfurt-based SME investor Halder has acquired a majority stake in Suvema AG of Biberist, Switzerland, as part of a management buy-out. Members of the management team also...