Johnson, Spellman & Associates

What Johnson, Spellman & Associates does

Johnson, Spellman & Associates, Inc. (JSA) is a privately held mechanical engineering firm founded in 1986 and headquartered in Peachtree Corners, Georgia, with 11–50 employees. The firm provides HVAC, plumbing, fire protection, fuel system engineering, infrastructure (underground utility distribution), sustainable design (LEED), and Building Information Modeling (BIM) services to commercial, institutional, and industrial clients. Its technical stack centers on traditional mechanical engineering practice augmented by BIM, 3D scanning for as-built condition capture, and LEED-accredited project delivery dating to 2001, including projects that have achieved LEED Platinum certification and 22–35% energy performance above code minimum.

JSA serves a vertical-segmented client base led by higher education (Emory, University of Georgia, Georgia Tech, Kennesaw State), K–12 (Atlanta Public Schools), healthcare (Rockdale Medical Center, Kimelman Cancer Institute), government/municipal (Cherokee County, Georgia Environmental Facilities Authority), and select commercial and nonprofit clients (CarMax, American Cancer Society). The firm holds engineering licensure in 42 U.S. states, with individual principals licensed in 18–20 states, supporting multi-state engagements such as a 1,000+ tank fuel system program for a communication company and 1,700+ fuel system designs across 750 Georgia facilities.

JSA's revenue model is professional services fees for engineering consulting, with pricing project-specific and not publicly disclosed. GTM motion is enterprise field sales with principals directly engaged in client relationships and project delivery from inception through construction completion. The firm is founder/principal-owned with no private equity or parent company involvement, and relies on long-tenured staff (20–30+ years), repeat business (30+ year client relationships), and a small digital footprint (LinkedIn, company website) rather than broad marketing campaigns. Distribution is regional with national reach, and the firm has accumulated multiple industry recognitions including AIA Georgia Honor Award and Georgia Recreational Park Association awards.

Name

Johnson, Spellman & Associates

Legal name

Johnson, Spellman & Associates, Inc.

Website

https://jsace.com

Company type

Private

Founded year

1986

Operating status

Operating

Headcount range

11–50 employees

Short description

Johnson, Spellman & Associates is a privately held mechanical engineering firm in Peachtree Corners, Georgia, providing HVAC, plumbing, fire protection, fuel system, infrastructure, LEED, and BIM services to higher education, K–12, healthcare, government, and commercial clients across 42 U.S. states.

Ownership category

akta.pro rank

Headquarters

HQ city

Peachtree City

HQ country

United States

HQ region

North America

Offices1 record

Markets served

GTM type

B2B

Offering type

Services

Cost components

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

Revenue model

1. Engineering Consulting Services: JSA provides mechanical engineering services including HVAC, Plumbing, Fire Protection, and Fuel System Engineering. Services range from concept budgeting and programming to construction review and special investigation of all types of systems. Revenue is generated through professional engineering fees for design services, construction administration, and consulting on commercial, institutional, and industrial facilities.

Go-to-market motion1 record

Distribution channels1 record

Marketing channels2 records

Core offering

JSA delivers professional mechanical engineering services covering HVAC, plumbing, fire protection, and fuel system engineering for commercial, institutional, and industrial facilities. Engagements span concept budgeting and programming through construction review and special investigation, supported by building information modeling, 3D as-built scanning, underground infrastructure design, and LEED-accredited sustainable design.

Product overview

Johnson, Spellman & Associates, Inc. (JSA) is an Atlanta-based mechanical engineering firm incorporated in 1986 that provides a comprehensive suite of engineering services. The company operates as a service-based organization offering five core service areas: Mechanical Engineering Services (HVAC, plumbing, fire protection), Fuel System Engineering Services, Infrastructure Services (underground utility distribution), Sustainable Design Services (LEED-certified projects), and Building Information Modeling (BIM). These services are delivered to commercial, institutional, and industrial clients across 42 states, with extensive project experience in educational facilities, healthcare, government, and recreational sectors.

Differentiator

Problem solved

Functional benefit

Products and services

• Mechanical Engineering Services Comprehensive mechanical engineering design services for HVAC, plumbing, and fire protection systems in commercial, institutional, and industrial facilities, from concept budgeting and programming through construction review and special investigation.
• Fuel System Engineering Services Design of petroleum storage and transfer systems for communication buildings, hospitals, data centers, airports, and similar facilities, scaling from 275-gallon single-tank units to multi-tank systems exceeding 100,000 gallons, with EPA-mandated SPCC Plan development.
• Infrastructure Services Design of underground distribution systems including steam, condensate, high/medium/low temperature water, chilled water, condenser water, and domestic water systems supporting heating and cooling distribution plants.
• Sustainable Design Services LEED-focused sustainable design services incorporating energy efficiency, water reduction, and lifecycle awareness, with all Principals and the majority of design staff holding LEED Accredited Professional credentials and projects achieving ratings from Certified through Platinum.
• Building Information Modeling (BIM) 3D modeling and 3D scanning services used to create highly complex engineering designs, capture as-built conditions and milestones, and provide building managers with essential foundation data for operations.

Quantifiable outcome

• LEED Platinum certification achieved on multiple projects including ASHRAE Headquarters and Sweetwater Creek State Park Visitor Center
• +2 more outcomes

Named customers10 records

Segments6 records

Ideal customer profiles5 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature5 records

Scale indicators4 records

Recent moves6 records

Expansion highlights5 records

Direct peers

• Affiliated Engineers: MEP engineering consultancy with similar building-focused mechanical, plumbing, and fire protection practice serving higher education, healthcare, and research clients. Comparable in service mix and delivery model to JSA, with a parallel principal-led engagement approach.
• CMTA (Legence): Engineering firm with deep MEP and energy/sustainability focus, delivering zero-energy and high-performance building designs. Closely comparable to JSA's LEED-certified sustainable design practice and energy efficiency outcome focus.
• TLC Engineering Solutions: MEP and fire protection engineering consultancy serving healthcare, education, government, and commercial clients. Directly comparable to JSA in vertical mix and core service offering (HVAC, plumbing, fire protection).
• RMF Engineering: MEP, fire protection, and infrastructure engineering firm serving higher education, healthcare, government, and utility clients. Comparable to JSA in service scope and institutional client base.
• ME Engineers: MEP engineering consultancy with a building systems focus spanning HVAC, plumbing, and fire protection. Directly comparable in service offering and the building-centric mechanical engineering consulting model that defines JSA's practice.
• Smith Seckman Reid (SSR): Integrated engineering firm offering MEP, structural, and commissioning services to healthcare, education, and government clients. Closely comparable to JSA in vertical focus and integrated design delivery.
• Karpinski Engineering: Mechanical, electrical, plumbing and fire protection engineering consultancy with a strong higher-education and healthcare practice. Comparable to JSA in service mix and institutional vertical concentration.

Broad incumbents

• Burns & McDonnell: Large multi-discipline engineering firm with MEP, commissioning, and fuel system capabilities serving commercial, healthcare, and government clients. Overlaps with JSA's mechanical engineering practice as part of a much broader portfolio and at national scale.
• WSP USA: Global engineering consultancy with a buildings practice covering MEP, fire protection, and sustainable design for institutional and commercial clients. Competes with JSA on larger healthcare, higher-ed, and government programs where bundled delivery is required.
• Stantec: Global design and engineering firm with a substantial buildings MEP and sustainability practice. Comparable to JSA's HVAC, plumbing, fire protection, and LEED services as part of a much larger multi-discipline platform.

Market position

Strengths4 records

Weaknesses4 records

Competitive moat4 records

Key risks5 records

Key highlights6 records

Customer concentration

• LinkedInlinkedin.com/company/johnson-spellman-&-associates-inc-

Revenue estimate

Valuation estimate

Number of profiles

Profiles7 records

Funding overview

Funding rounds

Investors

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 Johnson, Spellman & Associates