Blackcastle Partners

Blackcastle Partners Blackcastle Partners is a Mergers & Acquisitions, Deal Advisory, and Deal Origination firm

05/06/2026

Blackcastle advises company owners and leadership teams through the full lifecycle of selling an engineering, architecture, or environmental consulting firm.

We work with owners who want to prepare their business, position it effectively in the market, and run a disciplined sell‑side process — whether the goal is a strategic transition, a liquidity event, or a long‑term succession plan aligned with personal and financial objectives.

Our team brings senior‑level involvement, rigorous ex*****on, and direct access to a broad network of strategic acquirers and private equity groups active across the AEC and environmental sectors.

For owners considering their next chapter — liquidity, partnership, or succession — we provide clarity, structure, and trusted M&A guidance from initial planning through closing.

Contact us directly at blackcastle.us

Las Vegas, NV — April 15, 2026 — Blackcastle is pleased to announce that Bowyer Environmental Consulting has joined UES....
04/16/2026

Las Vegas, NV — April 15, 2026 — Blackcastle is pleased to announce that Bowyer
Environmental Consulting has joined UES.

Bowyer Environmental Consulting (BEC), founded in 2007, is a leading provider of environmental consulting services with offices in Long Beach and Mission Viejo, California. BEC’s team of experienced professionals specializes in brownfields, groundwater, property redevelopment, site investigation, remediation, and litigation support. The firm serves a diverse and long-standing client base across Southern California, including organizations in development, law, transportation, manufacturing, and healthcare.
For more information about BEC, visit bowyerenvironmental.com.

UES is a national provider of engineering, environmental, testing, and inspection services,
with deep expertise in environmental and earth sciences, sustainable infrastructure
solutions, geotechnical and materials testing, and advanced geophysical technologies.
The firm’s nearly 4,000 professionals across more than 100 branches support public- and
private-sector clients nationwide, delivering technology-enabled solutions that address
complex engineering and construction challenges from initial development through
redevelopment. UES serves a broad range of end markets—including transportation,
infrastructure, water and wastewater, technology, power transition, healthcare, education, industrial, residential, and mission-critical facilities—and has completed hundreds of thousands of projects across the United States, spanning solar farms, battery
manufacturing facilities, data centers, highways and bridges, water reservoirs, hospitals, schools, stadiums, airports, hotels and resorts, and residential developments.
For more information about UES, visit teamues.com.

Blackcastle acted as the exclusive advisor to Bowyer Environmental Consulting. The
transaction closed in April 2026; terms were not disclosed.
For more information about Blackcastle, visit blackcastle.us

Las Vegas, NV, March 5, 2024 - Blackcastle is pleased to announce the sale of DBI Architects, Inc. to GreenbergFarrow (G...
03/05/2024

Las Vegas, NV, March 5, 2024 - Blackcastle is pleased to announce the sale of DBI Architects, Inc. to GreenbergFarrow (GF).

DBI Architects, Inc. was established in 1973 and is one of the oldest Architecture and Interior Design firms in the Greater Washington D.C. area. The Company has 34 employees based in their headquarters in Reston, VA. DBI provides master planning, architecture, interior architecture & design, stealth design, extended construction contract administration, furniture management, and move management/facility management services. DBI's clients include the commercial and residential real estate communities, federal government agencies, corporations and technology firms, the hospitality and restaurant industry, and local, national, and international organizations.
For more information about DBI Architects, visit https://www.dbia.com/

GreenbergFarrow (GF) is an architecture, engineering, and development services firm founded in 1974. Based in Atlanta, GA, the firm has eleven offices across the United States and international offices in Hong Kong, Singapore and Mexico City. GF’s nearly 300 talented professionals specialize in large-scale retail and urban mixed-use developments, specialty retail and restaurants, and luxury high-rise residential developments. Services include pre-development zoning, land use studies, branding and prototype development, architectural and engineering design, project management and construction administration. Clients include IKEA, Related Companies, Meijer, Vornado, Victoria’s Secret, Toll Brothers, Bath & Body Works, Whole Foods Market, Acadia, The Home Depot, Michaels, Murphy USA, Circle K, Clean Energy, and Texas Roadhouse. GF is ranked in Building Design + Construction Magazine’s top 200 Architecture and Engineering firms.
For more information about GF, visit https://greenbergfarrow.com/

Blackcastle acted as an exclusive advisor to DBI Architects, Inc.. The transaction closed in March 2024; the terms of the deal were not disclosed.

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Las Vegas, NV, May 26, 2022 - Blackcastle Partners is pleased to announce the sale of BRiC Partnership to RTM Engineerin...
05/26/2022

Las Vegas, NV, May 26, 2022 - Blackcastle Partners is pleased to announce the sale of BRiC Partnership to RTM Engineering Consultants.

BRiC Partnership, LLC ("BRiC") is a leading Illinois-based engineering firm established in 2002. The Company has 42 employees in four offices located in Belleville,IL, Springfield, IL, St. Louis, MO, and Evansville, IN. BRiC provides mechanical, electrical, plumbing / fire protection, information technology systems design and construction administration services to higher education, government, secondary/elementary education, healthcare, commercial, corrections, office buildings, and physical plant clients; it also provides commissioning and retro-commissioning services.

For more information about BRiC, visit https://www.bricpartnership.com/

RTM Engineering Consultants is a national engineering consulting firm offering services in mechanical, electrical, plumbing, civil engineering, fire protection, technology, and commissioning. The Company has an extensive set of capabilities that allows it to deliver superior work on industrial, commercial, and retail builds as well as other complex building types such as healthcare and laboratory facilities. RTM's expanded team of 250+ engineering professionals, now located in 17 offices across the country and licensed in all 50 states, provides "national resources and local relationships" to its growing client base of architects, developers, and owners.

RTM press release: https://rtmec.com/expanding-our-reach-in-the-midwest/

Blackcastle Partners acted as an exclusive advisor to BRiC Partnership, LLC. The transaction closed in mid-May, 2022.

Follow Blackcastle's Blog and LinkedIn page to see our latest activity and deal announcements:
https://www.blackcastlepartners.com/blog
https://www.linkedin.com/company/blackcastlepartners

Las Vegas, NV, March 16, 2022 - Blackcastle Partners is pleased to announce the sale of Eleni Interiors to Banko Design....
03/17/2022

Las Vegas, NV, March 16, 2022 - Blackcastle Partners is pleased to announce the sale of Eleni Interiors to Banko Design.

Eleni Interiors ("Eleni") is a leading Chicago-based interior design and merchandising firm primarily serving the commercial multifamily and builder residential market sectors. Established twenty-nine years ago, the Company provides a full spectrum of interior design services to assist its clients from preliminary planning through project completion and delivery. Eleni has substantial experience in the design of commercial and model home interiors for builders, developers, and management companies in the Midwest and beyond.
For more information about Eleni Interiors, visit: https://eleniinteriors.com/

Banko Design ("Banko") is a full-service interior design and FF&E procurement firm that focuses on senior living, multifamily, and hospitality spaces. The Company's services include programming, budgeting, documentation and modeling, construction administration, and final project installation. Banko also acts as a full-service procurement firm that purchases FF&E, lighting, and flooring. The Company's ability to offer design and procurement services enables it to manage every aspect of its projects through completion. Banko provides its services from studios in Marietta, GA, Minneapolis, MN, and from satellite studios in Florida and Texas.
Banko Design press release: https://www.prnewswire.com/news-releases/banko-design-acquires-an-illinois-interior-design-studio-301503152.html

Blackcastle Partners acted as an exclusive advisor to Eleni Interiors. The transaction closed mid-March 2022; the terms of the deal were not disclosed.

Blackcastle Partners is a mergers and acquisitions (M&A) advisory firm providing consulting services to AEC clients in the United States and Canada. Our mission is to help business owners achieve their exit or growth objectives while creating greater opportunities for all shareholders and employees. Blackcastle's experienced advisory team has completed numerous merger and acquisition transactions and has an established network of strategic and private equity buyers. For more information about us and our services, please visit our website at blackcastlepartners.com

Follow Blackcastle's Blog and like our LinkedIn page to see our latest activity and deal announcements:
https://www.blackcastlepartners.com/blog
https://www.linkedin.com/company/blackcastlepartners

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Las Vegas, NV, May 11, 2021 - Blackcastle Partners is pleased to announce the sale of Infrastructure Engineering Corpora...
05/11/2021

Las Vegas, NV, May 11, 2021 - Blackcastle Partners is pleased to announce the sale of Infrastructure Engineering Corporation ("IEC") to Ardurra Group.

Infrastructure Engineering Corporation ("IEC") is a leading San Diego-based Water, Wastewater, Recycled Water Planning, Design, and Construction Management firm serving public agency clients throughout California. The Company has over 55 employees in 6 offices throughout California serving more than 225 clients and is a recognized staple of the California public agency water/wastewater market. The firm has a broad client base and achieved a high level of recognition through repeat business from many long-term clients. IEC has received many local and state/regional level project awards from professional societies such as the American Society of Civil Engineers, American Public Works Association, and American Consulting Engineering Council. For more information about IEC, visit https://www.iecorporation.com/

Ardurra Group is one of the fastest-growing engineering firms in the United States, providing consulting and engineering services to public and private entities throughout multiple states across the country. With the addition of IEC, Ardurra further expands its footprint in Southern California and enhances its current disciplines of water, civil, public works, emergency management, structural, surveying, aquatics, environmental, and transportation.
Ardurra Group operates as a portfolio company of RTC Partners, LP, a New York-based private equity firm.
Ardurra press release: https://www.businesswire.com/news/home/20210511005858/en/Ardurra-Group-Inc.-Acquires-Infrastructure-Engineering-Corporation

Blackcastle Partners acted as advisor for Infrastructure Engineering Corporation ("IEC"). The transaction closed in the first week of May 2021; the terms of the deal were not disclosed.

Blackcastle Partners is a mergers and acquisitions (M&A) advisory firm providing consulting services to AEC clients in the United States and Canada. Our mission is to help business owners achieve their exit or growth objectives while creating greater opportunities for all shareholders and employees. Blackcastle's experienced advisory team has completed numerous merger and acquisition transactions and has an established network of strategic and private equity buyers. For more information about us and our services, please visit our website at blackcastlepartners.com

Follow Blackcastle's LinkedIn page to see our latest activity and deal announcements at https://www.linkedin.com/company/blackcastlepartners

Links to our latest AEC deal announcements on our News/Blog page:
- https://www.blackcastlepartners.com/single-post/deal-announcement-infrastructure-engineering-corporation-was-acquired-by-ardurra
- https://www.blackcastlepartners.com/single-post/deal-announcement-msa-engineering-consultants-was-acquired-by-imeg-corp
- https://www.blackcastlepartners.com/single-post/deal-annoucement-mendenhall-smith-structural-engineers-was-acquired-by-imeg-corp

Las Vegas, NV, April 29, 2021 - Deal Announcement: MSA Engineering Consultants ("MSA") was acquired by IMEG Corp.MSA is ...
04/29/2021

Las Vegas, NV, April 29, 2021 - Deal Announcement: MSA Engineering Consultants ("MSA") was acquired by IMEG Corp.

MSA is one of the largest Mechanical, Plumbing, Electrical (MEP) & Low Voltage Engineering firms in Nevada. The Company has over 75-employees on staff, is registered in 40 States, and provides its services from offices located in Las Vegas and Reno, Nevada, and Phoenix, Arizona. Since its inception in 1978, MSA has completed over 6,500 projects for clients in diverse market sectors including Hospitality and Gaming, Education, Healthcare, Commercial, Performing Arts, and Sports Venues. For more information about MSA, visit the Company's website at https://www.msa-ec.com/

IMEG is one of the largest engineering consulting firms in the United States (ranked at No. 77 in Engineering News-Record’s 2021 Top 500 Design Firms) specializing in high-performing building systems, infrastructure, program management, and construction-related services. The firm is headquartered in Rock Island, IL, and employs over 1,500 team members in multiple locations across the country. IMEG press release: https://www.imegcorp.com/news_events/imeg-acquires-las-vegas-mep-engineering-firm-msa/

Blackcastle Partners initiated the transaction between MSA and IMEG. With the acquisition of MSA, its second deal in 2021, IMEG continues its growth trajectory in Nevada and gains a stronger foothold in the Las Vegas engineering market. The deal will close on May 1, 2021; the terms were not disclosed.

In March 2021, IMEG also acquired Mendenhall Smith Structural Engineers, a Las Vegas-based structural engineering firm represented by Blackcastle. This was IMEG's first acquisition in 2021 and first acquisition in the Silver State. More details about the previous deal at this link https://www.blackcastlepartners.com/single-post/deal-annoucement-mendenhall-smith-structural-engineers-was-acquired-by-imeg-corp

Blackcastle Partners is a mergers and acquisitions (M&A) advisory firm providing consulting services to clients in the United States and Canada. Our mission is to help business owners achieve their exit or growth objectives while creating greater opportunities for all shareholders and employees. Blackcastle's experienced advisory team has completed numerous merger and acquisition transactions and has an established network of strategic and private equity buyers. For more information about us and our services, please visit our website at blackcastlepartners.com

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Las Vegas, NV, March 1st, 2021 - Blackcastle Partners is pleased to announce the sale of Mendenhall Smith Structural Eng...
03/01/2021

Las Vegas, NV, March 1st, 2021 - Blackcastle Partners is pleased to announce the sale of Mendenhall Smith Structural Engineers to IMEG Corp.

Mendenhall Smith is a leading Las Vegas-based Structural Engineering firm founded in 1991. The company is a niche engineering firm providing building engineering for commercial and residential structures, as well as more technical and specialized designs such as tall structures and sophisticated amusement devices. For 30 years, Mendenhall Smith has provided engineered design solutions to thousands of projects and its capabilities are well-recognized by its broad client base in the Las Vegas market and beyond. For more information about the company, visit http://www.mendenhallsmith.com/

IMEG is one of the largest engineering consulting firms in the U.S. specializing in high-performing building systems, infrastructure, program management, and construction-related services. The firm is headquartered in Rock Island, IL, and has over 1,500 employees in multiple locations across the country. IMEG press release: https://www.imegcorp.com/news_events/imeg-acquires-las-vegas-based-structural-engineering-firm/

Blackcastle acted as the exclusive sell-side advisor for Mendenhall Smith Structural Engineers. The transaction closed on March 1st, 2021; the terms of the deal were not disclosed.

Blackcastle Partners is a mergers and acquisitions (M&A) advisory firm providing consulting services to clients in the United States and Canada. Our mission is to help business owners achieve their exit or growth objectives while creating greater opportunities for all shareholders and employees. Blackcastle's experienced advisory team has completed numerous merger and acquisition transactions and has an established network of strategic and private equity buyers. For more information about us and our services, please visit our website at blackcastlepartners.com
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On this day, we honor all who served. #🇺🇸
11/11/2020

On this day, we honor all who served.
#🇺🇸

Address

5940 South Rainbow Boulevard
Las Vegas, NV
89118

Opening Hours

Monday 9am - 5pm
Tuesday 9am - 5pm
Wednesday 9am - 5pm
Thursday 9am - 5pm
Friday 9am - 5pm

Telephone

+19496145564

Website

http://www.blackcastle.us/

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