Complex Bau AG
Complex Bau AG is a privately held Swiss total contractor founded in 2010, delivering design-build, renovation, and large-project services from offices in Lausanne and Geneva across French- and German-speaking Switzerland for institutional, residential, and commercial clients.
- Company typePrivate
- Founded2010
- HeadquartersLausanne, Switzerland
- Headcount51–100
- GTM typeB2B
- OfferingServices
What Complex Bau AG does
Complex Bau AG is a Swiss total contractor (Entreprise Totale / Generalunternehmer) founded in 2010, headquartered in Lausanne with a regional office in Geneva and operations extending into German-speaking Switzerland. The company delivers construction and renovation projects from conception through handover under fixed-price contracts that guarantee quality, timelines, and costs. Its core service portfolio comprises four lines: Conception et Réalisation (Design and Build), Rénovation (including occupied-site and heritage work), Assistance à Maîtrise d'Ouvrage (owner's representation), and Grands Projets (major projects via competition and tender).
The underlying methodology combines LEAN planning, industrial prefabrication techniques, and specialized protocols for renovating occupied buildings, including courtesy apartment programs to minimize tenant disruption. The firm holds multiple Minergie certifications (standard, Minergie-P, Minergie Réno) and HPE labels, reflecting consistent execution under Swiss energy-efficiency standards. Notable projects include the 27,000 m² Quartier Horizons Dorigny development, the 634-unit Grand Morillon student residence for IHEID, the 243-apartment Avenue du Grey renovation for SwissLife, the Fossil Group Europe headquarters, and the Trinova Park office building in Pratteln.
Revenue is generated entirely through one-off, project-based total contractor contracts with property owners, investors, developers, and institutional clients. Pricing is quote-based and not publicly disclosed. Go-to-market relies on direct enterprise engagement, project references, and competitive bidding rather than explicit marketing. Complex Bau AG is privately held with no disclosed parent company, institutional investors, or external funding rounds; ownership structure is not publicly available. The company is led by Director General Valéry Viennot, supported by department heads covering major projects, acquisition, renovation (French and German Switzerland), cost planning, construction execution, the Geneva branch, and finance and administration.
Complex Bau AG firmographics
Firmographics- Name
- Complex Bau AG
- Legal name
- Complex Bau AG
- Website
- https://complexbau.ch
- Company type
- Private
- Founded year
- 2010
- Operating status
- Operating
- Headcount range
- 51–100 employees
- Short description
- Complex Bau AG is a privately held Swiss total contractor founded in 2010, delivering design-build, renovation, and large-project services from offices in Lausanne and Geneva across French- and German-speaking Switzerland for institutional, residential, and commercial clients.
- Ownership category
- akta.pro rank
Complex Bau AG industry classification
Industry- Product category
- General Construction Services
- NAICS
- Nonresidential Building Construction (2362)
- SIC
- General Bldg Contractors - Nonresidential Bldgs (1540), General Bldg Contractors - Residential Bldgs (1520)
- akta.pro primary industry
- Commercial General Contracting (New Build) (IMAFAAAA)
- akta.pro secondary industries
- Residential General Contracting (New Build) (IMAFAAAB), Office & Corporate Building Construction (IMAFACAA)
Keywords
Where Complex Bau AG is headquartered
LocationHeadquarters
- HQ city
- Lausanne
- HQ country
- Switzerland
- HQ region
- Europe
Offices2 records
Markets served
Complex Bau AG business model
Business model- GTM type
- B2B
- Offering type
- Services
- Cost components
- Personnel, Supply Chain, Operations, Technology or R&D
Revenue model
- Total Contractor Services: As an Entreprise Totale/Generalunternehmer, Complex Bau takes full responsibility for construction projects from design through delivery, with guaranteed quality, timelines, and costs. Revenue is generated through fixed-price project contracts for property owners, developers, and investors.
Pricing tiers
| Model | Billing | Price |
|---|---|---|
| Other | Multi-year contract | Project-based total contractor contracts |
Go-to-market motion1 record
Distribution channels1 record
Marketing channels2 records
Complex Bau AG product offering
Product offeringCore offering
Complex Bau AG operates as a Total Contractor (Entreprise Totale/Generalunternehmer) in Switzerland, delivering construction projects from conception through execution to delivery. The company serves as the single point of responsibility for property owners, developers, and institutional investors, handling all phases of building projects including design, planning, cost control, and construction execution, with guaranteed quality, timelines, and costs.
Product overview
Complex Bau AG operates as a Totalunternehmen (general/total contractor) in the Swiss construction industry, offering a comprehensive suite of building services. The company's core portfolio consists of four interconnected service lines: Conception et Réalisation (Design and Build) provides end-to-end project delivery from conception through construction; Rénovation (Renovation) handles architectural, energy, and technical upgrading of existing buildings; Assistance à Maîtrise d'Ouvrage (Owner's Representative) offers project management and client representation services; and Grands Projets (Large Projects) specializes in major developments including competition and public tender projects. The company serves clients across French and German-speaking Switzerland through its Lausanne and Geneva offices.
Differentiator
Problem solved
Functional benefit
Products and services
- Conception et Réalisation (Design and Build)
Companies that use Complex Bau AG
Customer profileNamed customers6 records
Segments3 records
Ideal customer profiles3 records
Complex Bau AG technology and API
TechnologyTechnology focussed No
API detail
- Has API
- No
- API docs
- API detail
Core technology
AI maturity
App detail
Complex Bau AG partnerships and signals
Strategic signalPartnerships
Six partnerships are on record, tiered minor and core.
- Züst Gübeli Gambetti (Zürich)minorArchitect for Trinova Park office building project (18,300 m2, 5 floors + 2 basements) in Pratteln. Complex Bau executed this project as total contractor.
- Kengo Kuma and Associates / CCHEcoreInternational architecture partnership for the Grand Morillon student residence project in Geneva. Kengo Kuma, renowned Japanese architect, designed the 634-unit student housing complex. CCHE served as local architect. This was an international architecture competition project for IHEID.
- Steven Holl / Bonnard et WoefrrayminorOther architects in the Grand Morillon Cité Internationale project: Steven Holl for MSF headquarters and Bonnard et Woefrray for Terra & Casa's 88-unit building. All three projects coordinated landscape design together.
- Bricks AGcoreReal estate development partner for Trinova Park project. Bricks AG was the developer alongside Züst Gübeli Gambetti architects, Fontana landscape architects, and Wüest & Partner for territorial development.
- CCHE LausanneminorArchitect for Ancienne Douane heritage renovation project (77 apartments in 6 protected buildings in Lausanne city center). Complex Bau executed as total contractor.
- Service des monuments et sites (Lausanne)minorHeritage preservation authorities collaborated on Pont 1 transformation project and Ancienne Douane renovation. Close coordination required for heritage building work.
Scale indicators3 records
Recent moves9 records
Expansion highlights5 records
Complex Bau AG competitors and assessment
Company assessmentBroad incumbents
- Implenia AG: Switzerland's largest publicly listed construction group offering general contracting, real estate development and infrastructure services; competes with Complex Bau on competition/tender projects across Switzerland but operates at substantially larger scale and as a broad multi-segment incumbent rather than a focused total-contractor specialist.
Direct peers
- Walo Bertschinger AG: Swiss general contractor of comparable scale with national civil, building and renovation operations; competes with Complex Bau for institutional total-contractor mandates across Switzerland and shares the same design-build/integration heritage.
- HRS Real Estate AG: Swiss Real Estate AG is one of the largest Swiss Totalunternehmer / general contractors headquartered in Frauenfeld with national coverage of design-build, renovation and large-scale project delivery — directly comparable to Complex Bau's Entreprise Totale positioning across residential, commercial and institutional projects in Switzerland.
- Anliker AG Generalunternehmung: Swiss mid-sized Totalunternehmer headquartered in Emmenbrücke (Lucerne) with national reach across residential and commercial total-contractor mandates; directly comparable to Complex Bau in service offering, project scale band and Switzerland-only footprint.
- Steiner AG: Swiss general contractor (currently being integrated with Implenia) operating as Totalunternehmer across real estate development, new build and renovation projects — directly comparable to Complex Bau's single-point-responsibility model and Swiss-only national coverage.
- Priora AG: Swiss total contractor and real estate developer with national coverage of residential, commercial and mixed-use projects; competes with Complex Bau for the same institutional owner-developer mandates in Switzerland using an analogous Entreprise Totale guaranteed-price delivery model.
- Halter AG: Swiss Totalunternehmer and real estate developer operating across Suisse romande and German-speaking Switzerland; directly comparable to Complex Bau across residential, commercial and mixed-use total-contracting with similar emphasis on guaranteed cost, quality and timelines.
- Losinger Marazzi AG: Swiss general contractor (Bouygues Construction subsidiary) active in total enterprise contracting, residential and commercial development, and renovation across the Suisse romande; competes head-to-head with Complex Bau for institutional and developer-led total-contractor mandates in western Switzerland.
- Burckhardt AG: Swiss construction group active in new build, renovation and real estate development across the Suisse romande and beyond; a comparable mid-sized peer to Complex Bau for both heritage renovation and total-contractor projects in the western Switzerland market.
- Marti Generalunternehmung AG: Swiss arm of the Marti Group providing general contracting and total-enterprise services to residential, commercial and institutional clients across Switzerland — a comparable peer in scale and in total-contractor delivery model to Complex Bau's national Swiss operations.
Market position
Strengths5 records
Weaknesses5 records
Competitive moat4 records
Key risks6 records
Key highlights7 records
Customer concentration
Complex Bau AG social profiles
Digital presenceComplex Bau AG compliance and trust
Trust signalCompliance13 records
Complex Bau AG financial estimates
Financial estimateRevenue estimate
Valuation estimate
Complex Bau AG leadership team
Management profileNumber of profiles
Profiles9 records
Complex Bau AG funding detail
Funding detailFunding overview
Funding rounds
Investors
Funding detail is available on the Subscription and Enterprise plan.Contact sales →
Complex Bau AG M&A and investment
M&A and investmentM&A
Investments
M&A and investment is available on the Subscription and Enterprise plan.Contact sales →
Frequently asked questions about Complex Bau AG
What does Complex Bau AG do?
Complex Bau AG operates as a Total Contractor (Entreprise Totale/Generalunternehmer) in Switzerland, delivering construction projects from conception through execution to delivery. The company serves as the single point of responsibility for property owners, developers, and institutional investors, handling all phases of building projects including design, planning, cost control, and construction execution, with guaranteed quality, timelines, and costs.
Is Complex Bau AG a public or private company?
Complex Bau AG is a private company. It is classified as unknown and is currently operating.
When was Complex Bau AG founded?
Complex Bau AG was founded in 2010. It employs 51 to 100 people.
Where is Complex Bau AG based?
Complex Bau AG is headquartered in Lausanne, Switzerland, in the Europe region.
How does Complex Bau AG make money?
One revenue line is on record: total Contractor Services.
Who are Complex Bau AG's main competitors?
Implenia AG is listed as a broad incumbent. Direct peers are Walo Bertschinger AG, HRS Real Estate AG, Anliker AG Generalunternehmung, Steiner AG, Priora AG, Halter AG, Losinger Marazzi AG, Burckhardt AG and Marti Generalunternehmung AG.
Does Complex Bau AG have an API?
No public API is recorded for Complex Bau AG.
What industry is Complex Bau AG in?
Complex Bau AG's product category is General Construction Services. Its primary akta.pro industry code is IMAFAAAA, Commercial General Contracting (New Build), with a secondary code of IMAFAAAB, Residential General Contracting (New Build). Its NAICS code is 2362 and its SIC code is 1540.