Elithis
Elithis is a French building engineering and consulting firm founded in 2003, specializing in positive energy building design and collective housing renovation. It operates a B2B professional services model and was acquired by Oteis in September 2025.
- Company typePrivate
- Founded2003
- HeadquartersDijon, France
- Headcount51–100
- GTM typeB2B
- OfferingServices
What Elithis does
Elithis is a French building engineering and consulting firm founded in 2003 and headquartered in Dijon. The company specializes in positive energy building design — buildings that produce more energy than they consume — and in sustainable renovation and rehabilitation, with particular emphasis on collective housing. Its core technical capability centers on green engineering expertise applied to environmentally sustainable construction and the retrofitting of existing building stock to improve energy performance. Elithis is described in its own materials as a pioneer [pionnier] of positive energy building design, addressing structural energy inefficiency and the carbon footprint of the construction sector.
The company delivers B2B engineering and consulting services on a project-based, quote-priced basis, with no publicly disclosed pricing. Its customer focus is horizontal by use case rather than by industry vertical, concentrated on building renovation and sustainable construction. The go-to-market motion is sales-led, engaging clients directly for project delivery. No named reference customers, segment mix, or revenue concentration data are disclosed.
On September 19, 2025, Elithis was acquired by Oteis, a French Consulting & Engineering [Conseil & Ingénierie] group operating across building, water, infrastructure, and industrial sectors. The transaction transferred 40 specialists in sustainable buildings and renovation to Oteis, established a new Dijon implantation for the group, and stood up a Paris-based energy renovation pole, aligning with Oteis's Impulse 2028 strategic plan. Prior to the acquisition, Elithis operated independently; post-acquisition it functions as a specialized building engineering entity within the broader Oteis platform, though its standalone financials and detailed leadership structure are not publicly disclosed.
Elithis firmographics
Firmographics- Name
- Elithis
- Website
- https://elithis.fr
- Company type
- Private
- Founded year
- 2003
- Operating status
- Acquired
- Headcount range
- 51–100 employees
- Short description
- Elithis is a French building engineering and consulting firm founded in 2003, specializing in positive energy building design and collective housing renovation. It operates a B2B professional services model and was acquired by Oteis in September 2025.
- Ownership category
- akta.pro rank
Elithis industry classification
Industry- Product category
- Sustainable Building Engineering Services
- NAICS
- Architectural Services (54131), Engineering Services (541330)
- SIC
- Services-Engineering Services (8711)
- akta.pro primary industry
- Sustainable/Green Building & LEED Consulting (BPAHAKAG)
- akta.pro secondary industry
- Architectural Design Services (BPAHAKAA)
Keywords
Where Elithis is headquartered
LocationHeadquarters
- HQ city
- Dijon
- HQ country
- France
- HQ region
- Europe
Offices2 records
Markets served
Elithis business model
Business model- GTM type
- B2B
- Offering type
- Services
- Cost components
- Personnel, Operations, Technology or R&D
Revenue model
- Engineering and Consulting Services: Professional services for building design, renovation consulting, and sustainable construction advisory
Go-to-market motion1 record
Distribution channels1 record
Elithis product offering
Product offeringCore offering
Elithis is a French building engineering and consulting firm that specializes in the design of positive energy buildings (Bâtiments à Énergie Positive) and delivers sustainable renovation and rehabilitation services for existing building stock, particularly collective housing (habitat collectif). The firm sells engineering design, energy retrofit advisory, and project consulting services to real estate developers, social housing operators, and property owners, with execution teams based in Dijon and a dedicated energy renovation hub in Paris following its 2025 integration into the Oteis group.
Product overview
Elithis operates as a specialized building engineering division focused on positive energy building design. The company offers sustainable building and renovation services, including whole-building renovation and rehabilitation for collective housing. As part of Oteis group, Elithis contributes 40 experts in sustainable buildings and renovation, with dedicated teams in Dijon and a Paris-based pole dedicated to energy renovation. The offering centers on green engineering expertise for environmentally sustainable construction and building retrofitting.
Differentiator
Problem solved
Functional benefit
Products and services
- Elithis — Positive Energy Building Design (Conception de Bâtiments à Énergie Positive)
Companies that use Elithis
Customer profileSegments1 record
Ideal customer profiles1 record
Elithis technology and API
TechnologyTechnology focussed No
API detail
- Has API
- No
- API docs
- API detail
Core technology
AI maturity
App detail
Feature2 records
Elithis partnerships and signals
Strategic signalPartnerships
One partnership is on record.
- OteiscoreOteis acquired Elithis on September 19, 2025, marking a major milestone. The acquisition brings 40 new experts in sustainable buildings and renovation, establishes Elithis's presence in Dijon, and creates a dedicated energy renovation hub in Paris. The acquisition aligns with Oteis's Impulse 2028 strategic plan. For Elithis teams, this ensures stability and continuity; for clients, it guarantees project completion with enhanced resources.
Scale indicators2 records
Recent moves3 records
Expansion highlights3 records
Elithis competitors and assessment
Company assessmentMarket position
Competitive moat2 records
Key risks6 records
Key highlights5 records
Customer concentration
Elithis social profiles
Digital presenceElithis financial estimates
Financial estimateRevenue estimate
Valuation estimate
Elithis leadership team
Management profileNumber of profiles
Elithis funding detail
Funding detailFunding overview
Funding rounds1 record
Investors1 record
Funding detail is available on the Subscription and Enterprise plan.Contact sales →
Elithis 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 Elithis
What does Elithis do?
Elithis is a French building engineering and consulting firm that specializes in the design of positive energy buildings (Bâtiments à Énergie Positive) and delivers sustainable renovation and rehabilitation services for existing building stock, particularly collective housing (habitat collectif). The firm sells engineering design, energy retrofit advisory, and project consulting services to real estate developers, social housing operators, and property owners, with execution teams based in Dijon and a dedicated energy renovation hub in Paris following its 2025 integration into the Oteis group.
Is Elithis a public or private company?
Elithis is a private company. It is classified as corporate owned and is currently acquired.
When was Elithis founded?
Elithis was founded in 2003. It employs 51 to 100 people.
Where is Elithis based?
Elithis is headquartered in Dijon, France, in the Europe region.
How does Elithis make money?
One revenue line is on record: engineering and Consulting Services.
Does Elithis have an API?
No public API is recorded for Elithis.
What industry is Elithis in?
Elithis's product category is Sustainable Building Engineering Services. Its primary akta.pro industry code is BPAHAKAG, Sustainable/Green Building & LEED Consulting, with a secondary code of BPAHAKAA, Architectural Design Services. Its NAICS code is 54131 and its SIC code is 8711.