What L2S Engineering does

L2S Engineering, LLC is a privately held Mechanical, Electrical, and Plumbing (MEP) engineering design consultancy founded in 2009 and headquartered in Leesburg, Virginia, with a secondary office in Apollo Beach, Florida. The firm provides comprehensive MEP engineering services — covering HVAC systems, electrical power distribution, lighting controls, plumbing infrastructure, and functional commissioning — alongside specialized offerings for mission-critical facilities, life-science laboratories, and energy/microgrid systems. Its technical portfolio includes advanced capabilities such as explosion-proof laboratory design, ultra-purity gas and deionized water distribution, SCIF infrastructure, and microgrid integration combining photovoltaic, microturbine, UPS, and diesel generation sources.

The firm operates a project-based professional services model with custom quote-based pricing tied to scope, complexity, and facility size, typically structured as multi-year contracts. L2S is a certified Native American women-owned business with SBA recognition, and is led by two Principal Engineers, Laurie Sibani, P.E. and Sam Sibani, P.E. Its client base is concentrated in federal agencies (U.S. Customs and Border Protection, FDA), research institutions (Johns Hopkins University Applied Physics Laboratory), and large technology and defense corporations (Apple Inc., Lockheed Martin). Over 15 years of operation, the firm reports completing more than 6.5 million square feet of tenant renovations and complex facility projects across government, life-sciences, and technology verticals.

Name

L2S Engineering

Legal name

L2S Engineering, LLC

Website

https://l2s-eng.com

Company type

Private

Founded year

2009

Operating status

Operating

Headcount range

11–50 employees

Short description

L2S Engineering, LLC is a Native American women-owned MEP (mechanical, electrical, and plumbing) engineering design firm founded in 2009, serving federal agencies, research institutions, and technology and defense corporations with specialized laboratory, mission-critical, and microgrid infrastructure projects.

Ownership category

akta.pro rank

Product category

MEP Engineering Services

NAICS

Engineering Services (54133), Architectural, Engineering, and Related Services (5413)

akta.pro primary industry

MEP (Mechanical, Electrical & Plumbing) Engineering Consulting (BPAHAIAE)

akta.pro secondary industries

Energy Optimization & Retro-Commissioning for MEP Systems (BPABACAL), Building Management & Facility Control Systems (BMS/BAS, Power Monitoring, EPMS) (EUAEAFAJ)

Keywords

• MEP engineering design
• Building systems commissioning
• Laboratory facility engineering
• Mission-critical power systems
• Sustainable building design

Headquarters

HQ city

Leesburg

HQ country

United States

HQ region

North America

Offices2 records

Markets served

GTM type

B2B

Offering type

Services

Cost components

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

Revenue model

1. MEP Engineering Services: Project-based engineering services for mechanical, electrical, and plumbing systems design, including consulting, design development, construction administration, and commissioning. Revenue is generated through professional service fees on a per-project basis, typically for commercial, institutional, and government clients.

Pricing tiers

Go-to-market motion1 record

Distribution channels1 record

Marketing channels1 record

Core offering

L2S Engineering provides comprehensive Mechanical, Electrical, and Plumbing (MEP) engineering design services for commercial, institutional, government, and research facilities. Offerings span HVAC systems, power distribution, lighting controls, plumbing and process piping, energy conservation analysis, functional commissioning, and sustainable design. The firm specializes in mission-critical facilities including SCIFs, forensic labs, FDA/DEA-grade research facilities, and high-performance technology R&D campuses.

Product overview

L2S Engineering is an MEP (Mechanical, Electrical, and Plumbing) engineering services firm offering a unified portfolio of integrated engineering solutions. The core offerings include MEP Engineering Services as the umbrella product, supported by specialized Electrical Engineering, Mechanical Engineering, and Plumbing and Process Engineering services. These are complemented by three specialized service offerings: Base Building and Tenant Improvement, Life Science and Research & Development Facilities, and Building Assessment and Energy Analysis. The company serves government agencies, laboratories, research facilities, and commercial clients requiring specialized engineering for complex built environments.

Differentiator

Problem solved

Functional benefit

Products and services

• MEP Engineering Services Comprehensive mechanical, electrical, and plumbing engineering services focused on optimizing building functionality, occupant comfort, productivity, and sustainability for commercial, institutional, government, and research-facility clients.
• Electrical Engineering Services Electrical engineering solutions including emergency power systems, short-circuit analysis, coordination studies, arc-flash analysis, power-quality analysis, harmonic analysis, fire alarm systems, UPS design, generator paralleling, and lighting systems for commercial and mission-critical facilities.
• Mechanical Engineering Services Mechanical engineering services covering HVAC systems, indoor air quality, air-handling systems, chilled-beam and free-cooling strategies, heat recovery, heating and cooling plants, geothermal heat pump systems, and automatic temperature controls.
• Plumbing and Process Engineering Services Plumbing and process engineering services including water, waste, and gas piping distribution, storm-water management, water reclamation and reuse, pressurized and fuel gas systems, and high-purity water systems for laboratory and process facilities.
• Base Building and Tenant Improvement Tenant renovation services ranging from cold dark shell conversions to fully operational offices, including SCIF design, power distribution systems, emergency generators, UPS, lighting designs, and mechanical systems for commercial spaces.
• Life Science and Research & Development Facilities Engineering solutions for life-sciences and R&D sectors including advanced power distribution, explosion-proof electrical setups, central plants, specialized dehumidification/humidification, hazardous-materials exhaust systems, reverse osmosis, and ultra-high purity gas distribution.
• Building Assessment and Energy Analysis Building infrastructure evaluation services including power distribution assessment, emergency power evaluation, power generation analysis, mechanical and plumbing system reviews, power consumption evaluations, and building energy analyses with recommendations.

Quantifiable outcome

• Over 6.5 million square feet of tenant renovations completed successfully over 15 years
• +4 more outcomes

Named customers5 records

Segments4 records

Ideal customer profiles4 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature5 records

Partnerships

Two partnerships are on record, tiered core and minor.

• Apple Inc.coreStrategic or Co-development Partner · 1 January 2023L2S Engineering has maintained an ongoing partnership with Apple Inc. since 2023, providing MEP engineering and functional commissioning services at Apple research and development facilities. The firm successfully completed detailed performance testing over 160,000 square feet, assessing systems including power distribution, lighting controls, and fire safety. This partnership followed a thorough selection process demonstrating the firm's alignment with Apple's exacting standards.
• Lockheed MartinminorStrategic or Co-development PartnerL2S Engineering has expanded collaborations with industry leaders including Lockheed Martin, providing specialized MEP engineering solutions for complex aerospace and defense facility requirements.

Scale indicators3 records

Recent moves5 records

Expansion highlights5 records

Direct peers

• Interface Engineering: Interface Engineering is an MEP consulting firm focused on mission-critical, high-tech, and laboratory environments — directly comparable to L2S in target facility types (data centers, R&D labs, federal) and sustainability positioning.
• IMEG Corp: IMEG is a large U.S. engineering firm specializing in MEP, structural, and technology systems for healthcare, higher-education, government, and laboratory clients — directly comparable to L2S in core MEP design and federal/institutional client mix, though operating at a larger scale.
• ME Engineers: ME Engineers is a mid-sized MEP engineering consulting firm serving high-performance buildings, mission-critical facilities, and R&D/laboratory clients — a direct comparable to L2S in service scope, project type, and client profile.
• RMF Engineering: RMF Engineering is a mid-sized MEP and infrastructure engineering firm with deep government, higher-education, and healthcare portfolios — closely comparable in size band, federal exposure, and integrated MEP service offering.
• Affiliated Engineers Inc. (AEI): AEI is a privately held MEP engineering consultancy with strong laboratory, healthcare, and research-facility practices — directly comparable to L2S in technical specialization, client mix, and project-based delivery model.
• CMTA Inc. CMTA is a national MEP and energy-services engineering firm with strong higher-education, federal, and laboratory clients — a direct comparable in MEP design, commissioning, and energy-analysis service mix.

Broad incumbents

• Stantec: Stantec is a global engineering consultancy with strong federal, healthcare, and laboratory practices — overlaps with L2S in MEP design for government and research facilities but at a significantly larger scale.
• WSP USA: WSP is a global engineering professional services firm with active federal facilities, life-sciences, and mission-critical practices — competes with L2S on integrated federal and laboratory pursuits.
• Burns & McDonnell: Burns & McDonnell is a large multi-discipline engineering firm with significant federal, mission-critical, and energy/power practices — competes with L2S on federal facility work but at a much larger scale and broader service portfolio.
• Jacobs Solutions: Jacobs is a global engineering services incumbent with deep federal, life-sciences, and critical-infrastructure practices — competes with L2S as a prime on large integrated federal pursuits, often as a scale-disadvantaged competitor for L2S in mid-size MEP scopes.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat3 records

Key risks6 records

Key highlights6 records

Customer concentration

• LinkedInlinkedin.com/company/l2s-engineering-llc

Revenue estimate

Valuation estimate

Number of profiles

Profiles2 records

Funding overview

Funding rounds1 record

Investors1 record

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 L2S Engineering