About us

About us

BS-Plan Engineering Ltd.

We specialise in the design of building services engineering (HVAC) systems, with a particular focus on energy efficiency and environmental protection, as well as modern design technologies such as BIM.

Our services include designing building services systems, assessing existing systems (using laser scanners), redesigning them to more modern designs, and developing sustainable solutions to ensure optimal comfort and energy efficiency for our clients.

Our staff


Our team is committed to delivering every project to a high standard and on time. We always make the trust and satisfaction of our clients a top priority and build on the principles of collaboration and transparency in all our work.

Barnabas Bagi

Owner, Managing Director, Building services engineer in charge of design

Education, studies, entitlements

  • 2010-2014 I graduated from the Faculty of Engineering and Informatics at PTE Pollack Mihály University of Technology with a BSc degree in Building Engineering
  • 2014 -2016 I graduated from the Budapest University of Technology and Economics, Faculty of Civil Engineering and Process Engineering, MSc degree

Jobs, activities

  • HVArC Ltd. – Civil Engineering Designer (2015-2016)
  • EDR Consult Ltd. – Civil Engineering Designer (2016-2017)
  • BORD Architect Studio Ltd. – Civil Engineering Designer (2017-2019)
  • DUMOD Ltd. – Civil Engineering Designer (2019-2020)
  • Térváz Kft. – Architectural Engineer in charge (2020-2022)
  • BS-Plan Engineering Ltd. Civil Engineer in charge of Design, Managing Director (2022-)

Nándor Bagi

Senior architectural designer, Forensic expert, consultant

Education, studies, entitlements

  • 1962-1967 I graduated from the Faculty of Mechanical Engineering at BME (with good results).
  • Bachelor of Science in Heating and District Heating 1970-1972 (with distinction),
  • I graduated in 1972-1974 (with good grades) in aeronautical engineering.
  • Qualification as a Senior Planner (Ministry of Construction and Urban Development – 1987),
  • Authorisation to design a gas distribution pipeline (National Mining Inspectorate – 1988),
  • Authorisation to weld gas distribution pipelines and to supervise and inspect their construction on site (DUNAGÁZ Ltd. – 1993),
  • Building Energy Expertise, SZÉS6 (BMMK)
  • Gas Industry Technical Safety Inspector (DUNAGÁZ Rt. 2014.10.31)

Jobs, activities

  • MÁV Design Institute – Architectural Designer (1967-1972)
  • Residential designer (building services engineer) from 1972 to 1974, and then managing designer from 1974 to 1977.
  • Pest County Council Planning Company – Team Leader (1977-1983).
  • Buváti – technical adviser (1983-1984), then head of department (1984-1986).
  • Budapest II Construction Company – Construction Manager (1986-1988).
  • General Javszer Company – Chief Designer (1988-1990).
  • Sole proprietor – Building services engineering design, construction (1990-1994).
  • BAGI GÁZ Design, Construction Ltd. – Managing Director (1994-2004).
  • Private designer (2004- ).
  • Legal expert (2009- )

Attila Szőts

Collaborating partner, Building services engineering designer, Technical manager in charge

Soon…

high level of comfort Zugló
forensic building services engineering Hungary
building services laser scanner survey Bükkszék
innovative building services engineering Gödöllő
BIM planning Mátraszentistván
building services engineering Budaőrs
energy efficient building services engineering Szolnok
energy modernisation and renovation Budapest
building services engineering designer Mátraszentimre
BIM Eger