de maximis, Inc.
de maximis is an environmental project management firm providing coordination, construction oversight, decommissioning, radiological remediation, and fund administration services to PRP groups, industrial clients, and government entities across the United States and Caribbean.
- Company typePrivate
- Founded1988
- HeadquartersKnoxville, United States
- Headcount101–250
- GTM typeB2B
- OfferingServices
What de maximis, Inc. does
de maximis, Inc. is a privately held environmental services firm founded in 1988 and headquartered in Knoxville, Tennessee. The company provides project coordination, construction management, decommissioning and demolition oversight, radiological project coordination, single-party project management and technical support, and fund and trust administration services. Its primary clients are Potentially Responsible Party (PRP) groups and single-party industrial clients engaged in complex environmental remediation projects, with a secondary federal and state government segment; the firm operates across the United States and the Caribbean with 11 office locations and has coordinated work on over 100 federal and state Superfund sites spanning USEPA Regions I, II, III, IV, V, VI, XI, and X.
The company's service portfolio is delivered through a professional services model rather than a software platform. Core offerings include multi-party site coordination and management, construction management during the Remedial Action phase, decommissioning and demolition management for industrial facilities, and specialized radiological project coordination under CERCLA, the NRC Complex Material Sites Program, and FUSRAP. The fund administration business manages hundreds of accounts with several hundred million dollars in assets, providing account reconciliation, assessments and cash calls, accounts payable, financial reporting, and tax preparation services. de maximis is affiliated with two corporate entities — O&M, Inc. and de maximis Data Management Solutions, Inc. — which extend the firm's environmental services and data management capabilities.
The business operates on a sales-led, relationship-based go-to-market model with quote-based pricing tailored to project scope and complexity. Revenue derives from professional services fees on project engagements and managed services fees on fund administration assets. The firm employs 60+ professionals including professional engineers, geologists, hydrogeologists, and environmental scientists with backgrounds spanning industry, consulting, construction, and regulatory agencies and up to 35 years of relevant management experience. Ownership is founder/management-controlled with no parent company, external investors, or public listing disclosed.
de maximis, Inc. firmographics
Firmographics- Name
- de maximis, Inc.
- Legal name
- de maximis, inc.
- Website
- https://demaximis.com
- Company type
- Private
- Founded year
- 1988
- Operating status
- Operating
- Headcount range
- 101–250 employees
- Short description
- de maximis is an environmental project management firm providing coordination, construction oversight, decommissioning, radiological remediation, and fund administration services to PRP groups, industrial clients, and government entities across the United States and Caribbean.
- Ownership category
- akta.pro rank
Where de maximis, Inc. is headquartered
LocationHeadquarters
- HQ city
- Knoxville
- HQ country
- United States
- HQ region
- North America
Offices11 records
Markets served
de maximis, Inc. business model
Business model- GTM type
- B2B
- Offering type
- Services
- Cost components
- Personnel, Operations, Marketing or Sales, Others
Revenue model
- Project Management and Coordination Services: Professional services revenue from providing environmental project coordination and management to multi-party groups and single-party clients. Services include project coordination, construction management, decommissioning/demolition management, radiological project coordination, and technical support.
- Fund and Trust Administration: Fund administration services for PRP groups and individual clients. The company administers hundreds of accounts with several hundred million dollars in assets. Revenue derived from fund management fees based on asset size and complexity.
Go-to-market motion1 record
Distribution channels1 record
Marketing channels1 record
de maximis, Inc. product offering
Product offeringCore offering
de maximis, Inc. provides environmental project coordination and management services to multi-party groups and single-party industrial clients across the United States and Caribbean. The firm manages Superfund, RCRA, radiological, sediment remediation, and natural resource damage projects, and also administers environmental funds and trusts with several hundred million dollars in assets under management.
Product overview
de maximis, Inc. is an environmental project management firm offering a suite of coordinated professional services rather than a unified software platform. The core offerings include Project Coordination & Management, Construction Management/Oversight, Decommissioning & Demolition Management, Radiological Project Coordination & Management, Single Party Project Management & Technical Support, and Fund and Trust Administration. These services are delivered by professional project managers with experience in industry, regulatory agencies, remedial contracting, and engineering/environmental consulting, supporting multi-party and single-party environmental projects nationwide.
Differentiator
Problem solved
Functional benefit
Products and services
- Project Coordination & Management
- Construction Management / Oversight
- Decommissioning & Demolition Management
- Radiological Project Coordination & Management
- Single Party Project Management and Technical Support Technical support and management services for industry corporations and trade groups, including Phase I/II reviews, multi-site auditing, peer review, value engineering, cost estimating, litigation support, and staff augmentation.
- Fund and Trust Administration
Quantifiable outcome
- Clients have avoided millions of dollars of remedial costs through proactive management of all phases of remediation
- +1 more outcomes
Companies that use de maximis, Inc.
Customer profileSegments3 records
Ideal customer profiles3 records
de maximis, Inc. technology and API
TechnologyTechnology focussed No
API detail
- Has API
- No
- API docs
- API detail
Core technology
AI maturity
App detail
de maximis, Inc. partnerships and signals
Strategic signalPartnerships
Two partnerships are on record, tiered minor.
- O&M, Inc.minorAffiliate company providing environmental services. de maximis, inc. is affiliated with O&M, Inc. through corporate association.
- de maximis Data Management Solutions, Inc.minorAffiliate company providing quality data management and visualization services. Linked through corporate affiliation structure.
Scale indicators5 records
Recent moves6 records
Expansion highlights4 records
de maximis, Inc. competitors and assessment
Company assessmentBroad incumbents
- AECOM: Global infrastructure consulting firm with a large Environment business line providing Superfund, RCRA, and remediation services to PRP groups and industrial clients — a much larger, broader incumbent in the same space as de maximis.
- Tetra Tech: Leading environmental and water consulting firm with deep Superfund, federal, and industrial remediation practices that directly overlap with de maximis's project coordination and construction management services.
- Jacobs Solutions: Major professional services firm with a critical mission solutions and environmental remediation practice that competes for the same CERCLA/NRC project coordination and construction oversight work as de maximis.
- Arcadis: Global design and consultancy with a sizable environment division offering site investigation, remediation, and program management services to industrial and public-sector clients — overlapping de maximis's service portfolio at larger scale.
- WSP: Global professional services firm whose environment practice (built around the former Golder Associates) provides site assessment, remediation, and decommissioning services for industrial and federal clients — directly competitive with de maximis on large Superfund and demolition projects.
Direct peers
- Environmental Resources Management (ERM): Largest pure-play global environmental consultancy providing site assessment, remediation, and EHS program management to industrial corporations — directly comparable in mission and client base to de maximis's PRP and single-party industrial work.
- Geosyntec Consultants: Boutique environmental and geotechnical engineering firm providing remediation, site investigation, and construction oversight for Superfund and industrial clients — most comparable in scale and technical profile to de maximis.
- Haley & Aldrich: Mid-sized environmental and geotechnical engineering firm serving industrial clients on site investigation, remediation, and construction management — closely comparable in size, business model, and industrial-client focus to de maximis.
- Kleinfelder: Engineering, architecture, and science firm providing site assessment, remediation, and construction management services to industrial and federal clients — a similar mid-sized, multi-office competitor to de maximis in environmental project management.
Regional players
- Brown and Caldwell: Employee-owned environmental engineering firm focused on water and remediation projects for industrial and municipal clients; overlaps with de maximis on construction management and remedial action oversight, particularly in sediment and waterway work.
Market position
Strengths5 records
Weaknesses5 records
Competitive moat5 records
Key risks5 records
Key highlights6 records
Customer concentration
de maximis, Inc. social profiles
Digital presencede maximis, Inc. financial estimates
Financial estimateRevenue estimate
Valuation estimate
de maximis, Inc. leadership team
Management profileNumber of profiles
de maximis, Inc. subsidiaries and ownership
Company hierarchySubsidiaries1 record
de maximis, Inc. funding detail
Funding detailFunding overview
Funding rounds
Investors
Funding detail is available on the Subscription and Enterprise plan.Contact sales →
de maximis, Inc. 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 de maximis, Inc.
What does de maximis, Inc. do?
de maximis, Inc. provides environmental project coordination and management services to multi-party groups and single-party industrial clients across the United States and Caribbean. The firm manages Superfund, RCRA, radiological, sediment remediation, and natural resource damage projects, and also administers environmental funds and trusts with several hundred million dollars in assets under management.
Is de maximis, Inc. a public or private company?
de maximis, Inc. is a private company. It is classified as founder individual operated bootstrapped and is currently operating.
When was de maximis, Inc. founded?
de maximis, Inc. was founded in 1988. It employs 101 to 250 people.
Where is de maximis, Inc. based?
de maximis, Inc. is headquartered in Knoxville, United States, in the North America region.
How does de maximis, Inc. make money?
Two revenue lines are on record. Project Management and Coordination Services are the primary driver. The others are fund and Trust Administration.
Who are de maximis, Inc.'s main competitors?
Broad incumbents on record are AECOM, Tetra Tech, Jacobs Solutions, Arcadis and WSP. Direct peers are Environmental Resources Management (ERM), Geosyntec Consultants, Haley & Aldrich and Kleinfelder. Brown and Caldwell is listed as a regional player.
Does de maximis, Inc. have an API?
No public API is recorded for de maximis, Inc..