Mariano Engineering

What Mariano Engineering does

Mariano Engineering, LLC is a Las Vegas-based mechanical, electrical, and plumbing (MEP) engineering design firm founded in 1996, operating as a private LLC under principal Ronald G. Mariano, P.E. The firm is licensed in Nevada, California, and Arizona, with a California branch opened in January 2013, and reports a headcount of 1-10 employees. Its core service is integrated MEP design for commercial, residential, healthcare, education, hospitality, government, and military projects, with an explicit specialization in sustainable and energy-efficient systems, LEED certification support, and Variable Refrigerant Flow (VRF) technology for multi-zone and retrofit applications. Notable delivered work includes the Cottonwood Cove Resort and Marina (described as the world's first floating green building to receive LEED Gold certification), as well as projects for Target, Zappos, Urban Outfitters, Nellis and Creech Air Force Bases, Centennial Hills Hospital, McCarran Airport, City of Las Vegas Fire Stations, and UNLV Grant Hall.

The firm generates revenue through professional-services fees on a project-by-project basis, engaging directly with architects, developers, construction professionals, government agencies, and individual property owners. Pricing is quote-based and not publicly disclosed. Its go-to-market is sales-led and relationship-driven, leveraging the principal's 28+ years of experience, a project portfolio that includes marquee sustainability credentials, lightweight content marketing (the SustainaBulletin newsletter and resources section), and referral partnerships with utilities including Southwest Gas Corporation and Southern California Gas for energy-efficiency rebate traffic. Customer segments are horizontally diversified across enterprise commercial clients, public-sector/government work, and individual high-end residential owners, with named design wins spanning hospitality, retail, healthcare, technology, education, and military facilities.

Technically, the firm operates as a traditional engineering consultancy rather than a software or platform business, with no disclosed proprietary modeling tools, APIs, integrations, AI/ML capabilities, or recurring SaaS revenue. Its principal technical differentiation is the integrated, sustainability-first design methodology, deep VRF retrofit expertise, and design work on credentialed green building projects. With no external funding, no parent company, and a founder-led ownership structure, Mariano Engineering functions as a durable, regionally focused boutique practice whose growth levers are project referrals, geographic licensure, and continued visibility on high-profile sustainable projects rather than scale economies.

Name

Mariano Engineering

Legal name

Mariano Engineering, LLC

Website

https://marianoeng.com

Company type

Private

Founded year

1996

Operating status

Operating

Headcount range

1–10 employees

Short description

Mariano Engineering is a Las Vegas-based MEP (mechanical, electrical, plumbing) engineering design firm licensed in Nevada, California, and Arizona, serving architects, developers, government agencies, and individual clients on commercial, residential, healthcare, education, and military projects with a focus on sustainable, energy-efficient systems.

Ownership category

akta.pro rank

Product category

MEP Engineering Design Services

NAICS

Engineering Services (54133), Engineering Services (541330)

SIC

Services-Engineering Services (8711)

akta.pro primary industry

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

Keywords

• MEP engineering design
• Mechanical electrical plumbing
• Sustainable building design
• LEED certification consulting
• Building systems engineering

Headquarters

HQ city

Las Vegas

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. Engineering Design Services: Professional MEP engineering design services provided to architects, developers, construction professionals, and individuals. Revenue is generated through project-based consulting fees for mechanical, electrical, and plumbing design, equipment upgrades, energy upgrades, and system evaluations for capital improvements.

Go-to-market motion1 record

Distribution channels1 record

Marketing channels4 records

Core offering

Mariano Engineering is a Las Vegas-based MEP (Mechanical, Electrical, and Plumbing) engineering design firm that delivers integrated design services for commercial, residential, healthcare, education, government, and hospitality projects. The firm collaborates with architects, developers, construction professionals, and individuals to produce correctly sized, cost-effective, and energy-efficient building systems, with specialization in sustainable and LEED-certified design, VRF technology for retrofits, and evaluation of existing MEP systems for capital and energy upgrades.

Product overview

Mariano Engineering is a professional MEP (Mechanical, Electrical, and Plumbing) engineering firm offering integrated design services. The company provides a unified suite of engineering services including core MEP design, sustainable/green building design, LEED certification design, VRF technology implementation, and existing system evaluation. These services are offered as professional consulting rather than software products, serving commercial, residential, healthcare, education, government/military, and entertainment sectors across Nevada, Arizona, and California.

Differentiator

Problem solved

Functional benefit

Products and services

• Mechanical, Electrical, and Plumbing (MEP) Design Services

Quantifiable outcome

• World's first floating green building LEED Gold certified - Cottonwood Cove Resort and Marina
• +1 more outcomes

Named customers10 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

Feature3 records

Partnerships

Two partnerships are on record, tiered minor.

• Southwest Gas CorporationminorOthersReferenced as a utility partner providing rebate programs for energy efficiency. Mariano Engineering directs clients to Southwest Gas Corporation's efficiency rebate program on their resources page.
• Southern California GasminorOthersReferenced as a utility partner providing rebate programs for both business and home energy efficiency. Mariano Engineering directs clients to Southern California Gas rebate programs on their resources page.

Scale indicators3 records

Recent moves4 records

Expansion highlights4 records

Market position

Strengths1 record

Competitive moat4 records

Key risks6 records

Key highlights7 records

Customer concentration

• Xtwitter.com/SustainaBull
• Facebookfacebook.com/MarianoEngineering
• LinkedInlinkedin.com/company/mariano-engineering-llc

Compliance1 record

Revenue estimate

Valuation estimate

Number of profiles

Profiles1 record

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 Mariano Engineering