■ Company · Master craftsman business since 2002
Loga-Bau GmbH – master craftsman business with experience since 2002
We build structural shells, render and insulate facades, fit out interiors and, on request, hand over on a turnkey basis – for private clients, investors, businesses and public-sector clients.

- 24Years of experience
- 34Employees incl. apprentice
- 13Vehicles + 7.5-tonne lorry
- 3Own cranes
01 — Company
A building contractor for shell construction, facades and finishing works.
In construction since 2002, a GmbH since 2016, at Hansastraße 10-12 in Mannheim since 2020.
Loga-Bau GmbH is a building contractor and master craftsman business (run by a certified German master craftsman, or Meister) based in Mannheim. We build structural shells, render and insulate facades, fit out interiors and renovate existing buildings – on a turnkey basis if you wish, with one contracting party for the entire project.
Our roots lie in finishing works: in 2002 the company started out as Loga-Bauservice with internal plastering and external rendering, external thermal insulation composite system (ETICS) work, drylining and demolition work. Today our range of services extends from basement to facade. In addition, we take on painting work and support you in planning your project.
We carry out our core services with our own crews. This reduces the interfaces between trades and means you know who is working on your site.
02 — History
From finishing-trades business to building contractor.
- 2002
Started as Loga-Bauservice
Internal plastering and external rendering, ETICS, drylining and demolition work: the trades the company grew out of.
- 2016
Incorporation of Loga-Bau GmbH
Entered in the Commercial Register on 7 December 2016 (Amtsgericht Mannheim, HRB 726446).
- 2020
New head office
Move from Schwetzinger Straße to Hansastraße 10-12 in Mannheim.
- Today
Building construction and finishing works from a single source
33 employees and one apprentice, our own fleet and equipment: from shell construction to turnkey handover.
03 — Quality standards
What you can hold us to.
Instead of sweeping promises: four things you can check for yourself during construction.
- 01
A dedicated contact person
From the first meeting to formal acceptance, you have one person in charge who knows your project.
- 02
Regular coordination
We coordinate with you and your design team at fixed intervals. We discuss requested changes before they affect the price or the date.
- 03
Binding dates
For turnkey construction, the fixed price and completion date are written into the contract. For individual trades, you receive a detailed, transparent quotation.
- 04
Decide on a real sample
If you wish, you can choose the texture and grain size of your plaster on a real plaster sample before the first wall is plastered.

04 — Team & management
33 employees and one apprentice. A master craftsman business.
Loga-Bau employs 33 people and one apprentice – on the construction sites and in the office at Hansastraße 10-12. The company is run by Managing Director Lokman Yalniz.
As a master craftsman business, we work under the direction of a master craftsman and in line with the generally recognised codes of practice.
- Managing Director
- Lokman Yalniz
- Type of business
- Master craftsman business
- Registered office
- Hansastraße 10-12, 68169 Mannheim
- Register
- Amtsgericht Mannheim, HRB 726446

05 — Fleet & equipment
Our own vehicles, our own cranes.
The company owns 13 vehicles, a 7.5-tonne lorry, three cranes and excavators.
We plan transport and lifting operations ourselves and coordinate them directly with the construction sequence. This makes us less dependent on hired equipment and the availability of third parties when it comes to dates. As a rule, around nine sites are running at any one time.
Shell construction with our own craneYour building project. Our quotation.
Tell us about your project – we usually get back to you within two working days with an initial assessment.