Apex Companies

Nationwide Coverage Phase 1 ESA
3.3 (3 reviews)
38+
Years in Business
Nationwide
Coverage
Property Expertise
environmental consultingengineeringwater resourceshealth and safetystormwater management

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About Apex Companies

Apex Companies (legal name Apex Companies, LLC) is a nationally-ranked environmental engineering and consulting firm headquartered at 2101 Gaither Road, Suite 500, Rockville, MD 20850. Founded in 1988, the firm operates across all 50 U.S. states and has built a reputation in environmental due diligence, water resources, stormwater management, ESG/sustainability, and compliance assurance.

The CRE-relevant value proposition: Apex is the kind of firm institutional clients hire when they need Phase 1 ESAs handled alongside broader environmental compliance work — stormwater permitting, GHG inventory verification, environmental audits, and litigation support. Public client testimonials reference Apex performing Phase I and Phase II assessments for a Bank & Insurance firm “whenever we open a new location,” which is a useful signal of repeatable institutional capability.

Six Service Lines

Apex’s services are organized into six integrated practice areas, all available in a single engagement:

  1. Environmental — Phase I/II ESAs, compliance, assessment, remediation, permitting
  2. Health & Safety — workplace health, safety, regulatory compliance
  3. Compliance & Assurance — technical expert witness, environmental litigation support, audits
  4. Infrastructure — multidisciplinary planning, design, delivery
  5. ARTEMIS® — Apex’s trademarked environmental data management and compliance platform
  6. Water — integrated water, wastewater, stormwater, and resource management

ARTEMIS Platform

ARTEMIS is Apex’s proprietary data and compliance management platform — useful for institutional clients managing environmental compliance across many properties. A Major Retail Company testimonial on Apex’s site states: “No one else could meet all our company data needs and Apex has worked with us to customize ARTEMIS as a great tool to use across our business units.” For portfolio holders, ARTEMIS is often the differentiator vs. competitors who deliver one-off reports.

Stormwater Strength

Apex’s stormwater management practice is unusually deep — public testimonials reference Apex managing stormwater inspections, maintenance, and repair across 600+ stormwater management (SWM) facilities for a state DOT client. For CRE buyers acquiring properties with NPDES stormwater obligations (especially industrial sites, large parking footprints, and aerospace facilities), Apex’s stormwater capability is a real differentiator.

Sectors Served

Apex serves seven primary client sectors:

  • Energy — oil & gas, renewable, utility
  • Real Estate & Financial Services — CRE due diligence, lender compliance, multifamily
  • Industrial/Manufacturing — RCRA, TSCA, compliance audits
  • Public Sector — federal, state, municipal
  • Transportation & Logistics — DOT stormwater, distribution facilities
  • Aerospace & Aviation — GHG inventory, federal compliance
  • Telecommunications — site environmental, tower siting

Service Area

Apex provides nationwide coverage with offices in all 50 states. Headquarters in Rockville, Maryland places the firm well for federal practice (EPA HQ proximity, Capitol Region client base) and the broader Mid-Atlantic CRE market. For multi-state engagements, ARTEMIS provides consistent reporting and tracking across geographies.

Best For

  • Institutional buyers needing Phase 1 ESA + ongoing compliance — ARTEMIS platform consolidates portfolio data
  • Properties with stormwater management obligations — established SWM specialty
  • Federal-proximity deals (DC metro, government-contracting CRE) — Rockville HQ + federal practice
  • Banks and insurance companies expanding via new locations — repeatable institutional engagement model
  • Industrial/manufacturing sites with multi-media compliance needs — Environmental + Health & Safety + Water on one team
  • Litigation-adjacent environmental work — expert witness practice
  • Aerospace and DOT clients — GHG and stormwater expertise

Request a Quote

Contact Apex Companies directly:

Headquarters: Apex Companies, LLC, 2101 Gaither Road, Suite 500, Rockville, MD 20850

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