Lutz Kleemann Planungsbüro für Versorgungstechnik

What Lutz Kleemann Planungsbüro für Versorgungstechnik does

APEX Ingenieure GmbH (operating out of the lineage of Lutz Kleemann Planungsbüro für Versorgungstechnik, founded 1992) is a Berlin-based engineering consultancy specializing in Technische Gebäudeausrüstung (TGA) — the technical building equipment systems that handle heating, ventilation, plumbing, electrical, and renewable-energy integration in built structures. The firm delivers the full lifecycle of TGA services: planning across HOAI Phases 1–8 (basic assessment through construction supervision), consulting, and on-site construction supervision, with explicit coverage of Kostengruppe 400 across all sub-disciplines.

The technical backbone is a BIM-centric digital toolchain. Engineers work in Trimble Plancal Nova for 3D model–coordinated TGA design, use Siemens Simaris for electrical network planning, and apply PV-SOL for photovoltaic yield simulation. The firm positions BIM as the central coordination discipline, allowing mechanical, electrical, and renewable-energy systems to be designed against the same architectural model — a workflow that reduces clashes during construction and supports compliance documentation. Headcount is described at 40+ engineers, specialists, and supervisors, operating from Berlin with supra-regional project reach. Leadership sits with managing directors Dominik Neumann and Steffen Schindler.

The commercial model is project-based professional services, with fees typically structured under HOAI fee ordinances for German engineering engagements. Revenue is generated from four buyer personas: building owners (Bauherren), investors, operators (Betreiber), and architects who require TGA coordination input. The firm supplements fee income via consulting and construction-supervision mandates. Employer positioning is actively cultivated — the firm carries the DIIND "Arbeitgeber der Zukunft" seal and the "Ausgezeichnetes Planungsbüro" industry recognition, signaling investment in talent retention as a strategic lever in a tight German engineering labor market.

Name

Lutz Kleemann Planungsbüro für Versorgungstechnik

Legal name

APEX Ingenieure GmbH

Website

https://kleemann-versorgungstechnik.de

Company type

Private

Founded year

1992

Operating status

Operating

Headcount range

1–10 employees

Short description

APEX Ingenieure GmbH is a Berlin-based engineering consultancy (40+ staff) delivering BIM-coordinated Technische Gebäudeausrüstung (TGA) planning, consulting, and construction supervision across HOAI Phases 1–8 for building owners, investors, operators, and architects.

Ownership category

akta.pro rank

Product category

MEP Engineering Services

NAICS

Engineering Services (541330), Management, Scientific, and Technical Consulting Services (5416)

SIC

Services-Engineering Services (8711), Services-Engineering, Accounting, Research, Management (8700)

akta.pro primary industry

Civil & Structural Engineering Consulting (BPAHAIAA)

akta.pro secondary industry

Performance Contracting & Energy-as-a-Service (EaaS) for Buildings (BPABAGAN)

Keywords

• Technical building equipment planning
• TGA engineering services
• BIM coordination consulting
• HOAI performance phases
• Construction supervision services

Headquarters

HQ city

Berlin

HQ country

Germany

HQ region

Europe

Offices1 record

Markets served

GTM type

B2B

Offering type

Services

Cost components

Personnel, Technology or R&D, Operations, Marketing or Sales, Infrastructure

Revenue model

1. Engineering Planning Services (TGA-Planung): Core revenue stream from integrated technical building equipment (TGA) planning services covering all HOAI performance phases (1-8) for all trades in cost group 400. Services include BIM planning, 3D modeling, collision checks, detailed calculations, sustainable and efficient system concepts, and complete technical documentation and specifications.
2. Technical Consulting (Beratung): Technical consulting services including variant studies, feasibility analyses, economic calculations, strategic TGA consulting for new construction and renovation, BIM pre-consultation, risk analyses, technical due diligence, operator concepts, and energy efficiency evaluations.
3. Construction Supervision (Objektüberwachung): HOAI LP 8 construction supervision services including TGA specialist management for all cost group 400 trades, quality control, schedule and cost control, coordination of executing firms, and technical handover documentation.

Go-to-market motion1 record

Distribution channels1 record

Marketing channels3 records

Core offering

APEX Ingenieure GmbH provides integrated technical building equipment (TGA) planning, consulting, and construction supervision services covering all HOAI performance phases (LP 1–8) for every trade in cost group 400 (Kostengruppe 400). The firm delivers BIM-based digital planning, 3D modeling, collision checks, feasibility and variant studies, and on-site construction supervision for new construction, renovation, and existing-building optimization projects. Outputs are norm-compliant per DIN, VDI, AMEV, and GEG, supporting building owners, investors, operators, and architects across regional and supra-regional German projects.

Product overview

APEX Ingenieure GmbH (originating from the 1992-founded Ingenieurbüro Kleemann) operates as an integrated engineering services firm offering three interconnected core services: Planungsleistung (TGA planning covering all HOAI phases 1-8), Beratung (technical consulting and feasibility analysis), and Objektüberwachung (construction supervision/building management). The company uses digital planning tools including BIM processes, Trimble Plancal Nova, Siemens Simaris, and PV-SOL to deliver technically precise, economically viable, and sustainable building services engineering solutions across new construction, renovation, and existing building optimization projects.

Differentiator

Problem solved

Functional benefit

Products and services

• Planungsleistung (TGA-Planung) Integrated technical building equipment (TGA) planning services covering all HOAI performance phases (LP 1–8) for every trade in cost group 400 (Kostengruppe 400), including BIM planning, 3D modeling, collision checks, detailed calculations, sustainable and efficient system concepts, and complete technical documentation and specifications, targeted at building owners, investors, operators, and architects in Germany.
• Beratung (Technische Beratung) Technical consulting services for building owners, investors, and operators, including variant studies, feasibility analyses, economic viability calculations, strategic TGA consulting for new construction and renovation, BIM pre-consulting, risk analyses, technical due diligence, operator concepts, and energy efficiency evaluations.
• Objektüberwachung (Bauleitung TGA) Construction supervision and site management services covering HOAI LP 8 for all cost group 400 trades, including TGA specialist management (Fachbauleitung), quality control, schedule and cost monitoring, coordination of executing firms, functional and performance testing, acceptance preparation, and technical handover documentation.

Quantifiable outcome

• Norm-compliant planning according to DIN, VDI, AMEV, GEG standards
• +1 more outcomes

Segments4 records

Ideal customer profiles2 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature3 records

Partnerships

One partnership is on record.

• Digital Connect GmbHminorOthersWebsite design and implementation partner responsible for the company's digital presence at apex-ingenieure.com. Digital Connect GmbH (www.digital-con.de) provided web design and technical implementation services.

Scale indicators3 records

Recent moves8 records

Expansion highlights4 records

Broad incumbents

• Arcadis Germany: Global design and engineering consultancy with German MEP and sustainable-buildings teams. Comparable in delivering TGA and energy consulting for enterprise real estate projects, but with much broader service breadth.
• WSP in Germany: Global engineering consultancy with German MEP / TGA teams serving commercial, healthcare, and institutional building clients. Overlaps in HOAI-equivalent building services planning but as part of a much wider portfolio.
• Drees & Sommer SE: Large German engineering and consulting firm with a substantial building-services / TGA practice alongside broader real estate and construction advisory. Competes for the same enterprise clients on complex building projects but operates at far greater scale.
• Sweco Deutschland: European engineering consultancy with German operations covering building services, energy, and sustainability consulting. Directly comparable in TGA planning and energy-efficiency consulting, though at significantly larger scale.

Direct peers

• Planungsgruppe M + M AG: German engineering consultancy delivering TGA / building services planning and consulting. Comparable in HOAI-based service offering and enterprise building-services client base.
• S&P Sahlmann Planungsgesellschaft mbH: German engineering office specializing in technical building equipment (TGA) planning across HOAI phases. Comparable in service scope and focus on complex new-construction and renovation projects.
• Höhler + Partner Ingenieure: Mid-sized German TGA engineering firm offering HOAI LP 1-9 planning for KG 400 trades. Directly comparable in service scope, lifecycle coverage, and enterprise client base for building-services engineering.
• Brennecke Ingenieure GmbH: German TGA / Versorgungstechnik engineering firm providing planning, consulting, and construction supervision for technical building equipment. Highly comparable in core offering and target customer segments.
• ZWP Ingenieur-AG: Cologne-based German TGA / building services engineering consultancy offering HOAI planning across KG 400 trades. Closely comparable in scope (HVAC, electrical, plumbing, BIM) and target customer base (investors, building owners, architects).

Regional players

• R + T Ingenieure GmbH: Stuttgart-area German TGA engineering firm offering full HOAI building-services planning. Comparable in service offering but primarily serves southern Germany, making it more of a regional competitor than a Berlin-based one.

Market position

Strengths4 records

Weaknesses4 records

Competitive moat3 records

Key risks6 records

Key highlights6 records

Customer concentration

• LinkedInlinkedin.com/company/lutz-kleemann-planungsb%C3%BCro-f%C3%BCr-versorgungstechnik

Revenue estimate

Valuation estimate

Number of profiles

Profiles2 records

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Lutz Kleemann Planungsbüro für Versorgungstechnik