Dagher Engineering, PLLC

What Dagher Engineering, PLLC does

Dagher Engineering, PLLC is a New York City-based building systems engineering and sustainability consulting firm that, prior to its acquisition by Pennoni effective June 30, 2025, operated as a private professional services practice founded in 2000 with 11-50 employees headquartered at 29 Broadway in Manhattan. The firm delivers comprehensive MEP engineering — HVAC, electrical, plumbing, fire protection and alarm, and low-voltage systems — alongside a higher-margin layer of specialized services including Passive House consulting, energy modeling, computational fluid dynamics (CFD) analysis, LEED certification and sustainability consulting, commissioning and start-up services, and NYC-mandated Special & Progress Inspections.

The business model is straightforward B2B professional services: project-based engagements delivered directly to building owners, developers, and construction project stakeholders in the New York market, with revenue generated through consulting and engineering service fees rather than product or licensing revenue. No specific pricing model or contract structures are publicly disclosed. The firm serves two primary customer segments — building owners/developers and NYC construction and development projects — with horizontal segmentation across both commercial and residential real estate. The company's stated differentiators are its depth in high-performance building design and its credentialed ability to perform NYC-regulated Special & Progress Inspections, capabilities described as 'award-winning' though specific awards are not named.

Following the June 30, 2025 asset acquisition by Pennoni (a Philadelphia-based multidisciplinary engineering firm), Dagher Engineering operates as 'The Dagher Engineering Division of Pennoni,' with founder Elias Dagher, PE, LEED AP, CPHC retained as Senior Principal and the full staff joining the acquirer. Pennoni's existing Manhattan office at 130 West 29th Street remains the regional headquarters while Dagher's 29 Broadway location serves as a second Pennoni office. The transaction was initiated and advised by Morrissey Goodale, a management consulting firm focused on the A&E industry.

Name

Dagher Engineering, PLLC

Legal name

Dagher Engineering, PLLC

Website

https://dagherengineering.com

Company type

Private

Founded year

2000

Operating status

Acquired

Headcount range

11–50 employees

Short description

Dagher Engineering is a New York City building systems engineering and sustainability consultancy providing MEP design, Passive House consulting, energy modeling, CFD analysis, commissioning, LEED advisory, and NYC Special & Progress Inspections to commercial and residential building owners, developers, and construction projects.

Ownership category

akta.pro rank

Product category

Building Systems Engineering Services

NAICS

Engineering Services (541330), Architectural, Engineering, and Related Services (5413)

akta.pro primary industry

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

Keywords

• Building systems engineering
• MEP engineering services
• Sustainability consulting
• Energy modeling services
• HVAC design

Headquarters

HQ city

New York

HQ country

United States

HQ region

North America

Offices1 record

Markets served

GTM type

B2B

Offering type

Services

Cost components

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

Revenue model

1. Engineering Consulting Services: Professional engineering consulting services including MEP design, sustainability consulting, and specialized building systems services delivered on a project basis

Go-to-market motion1 record

Distribution channels1 record

Core offering

Dagher Engineering, PLLC is an award-winning building systems engineering and sustainability consulting firm providing comprehensive mechanical, electrical, and plumbing (MEP) design for commercial and residential buildings. The firm integrates core building systems engineering (HVAC, electrical, plumbing, fire protection/alarm, low-voltage systems) with advanced high-performance services such as Passive House consulting, energy modeling, CFD analysis, commissioning, LEED certification, and NYC-mandated Special & Progress Inspections.

Product overview

Dagher Engineering, PLLC is an award-winning building systems engineering and sustainability consulting firm providing comprehensive MEP (mechanical, electrical, and plumbing) services combined with advanced high-performance building expertise. The company's portfolio includes core building systems engineering (HVAC, electrical, plumbing, fire protection, and low-voltage systems) integrated with specialized services such as Passive House consulting, energy modeling, computational fluid dynamics (CFD) analysis, commissioning, LEED certification, and NYC Special & Progress Inspections. Following the June 30, 2025 acquisition by Pennoni, the firm now operates as 'The Dagher Engineering Division of Pennoni' while maintaining its office at 29 Broadway in Manhattan.

Differentiator

Problem solved

Functional benefit

Products and services

• HVAC Systems Engineering Engineering design services for heating, ventilation, and air conditioning systems in commercial and residential buildings.
• Electrical Systems Engineering Electrical power distribution, lighting, and electrical infrastructure design services for commercial and residential buildings.
• Plumbing Systems Engineering Water supply, drainage, and plumbing infrastructure design services for buildings.
• Fire Protection and Alarm Systems Engineering Design of fire suppression systems, sprinklers, and fire alarm systems to meet building safety requirements.
• Low-Voltage Systems Engineering Engineering services for low-voltage systems including data, communications, and security infrastructure.
• Passive House Consulting Consulting services for Passive House building certification, focusing on ultra-low energy consumption building design.
• Energy Modeling Simulation and analysis of building energy consumption to optimize efficiency and sustainability.
• Computational Fluid Dynamics (CFD) Analysis Advanced airflow and thermal analysis using computational methods to optimize building comfort and systems performance.
• Commissioning and Start-Up Services Verification and testing services to ensure building systems are designed, installed, and perform as intended.
• LEED Certification and Sustainability Consulting Leadership in Energy and Environmental Design certification advisory and sustainability strategy services.
• Special and Progress Inspections Required inspection services for New York City construction projects to verify compliance with building codes.

Segments2 records

Ideal customer profiles1 record

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature6 records

Partnerships

One partnership is on record.

• Morrissey GoodalecoreImplementation/ SI/ Consulting Partner · 30 June 2025Morrissey Goodale, a specialized management consulting and research firm exclusively serving the architecture, engineering, and environmental consulting industries, initiated the transaction and advised Dagher Engineering in its acquisition by Pennoni.

Scale indicators1 record

Recent moves3 records

Expansion highlights4 records

Direct peers

• Jaros, Baum & Bolles: Long-established NYC-based MEP engineering consulting firm serving building owners and developers. Directly comparable in service mix, project types, and geographic focus to Dagher Engineering.
• AKF Group: Mid-sized MEP and sustainability consulting firm with strong NYC presence. Overlaps directly with Dagher's HVAC, electrical, plumbing, and LEED/sustainability consulting offerings for commercial real estate clients.
• ME Engineers: MEP and lighting design consulting firm serving high-performance buildings across major U.S. markets including New York. Comparable business model and specialization in complex, sustainability-focused building projects.
• Syska Hennessy Group: National MEP and critical facilities engineering firm with a strong NYC office. Competes in similar commercial, healthcare, and mission-critical project segments.
• Cosentini Associates (a Tetra Tech company): NYC-headquartered MEP engineering consulting firm now part of Tetra Tech. Direct competitor for high-performance commercial and institutional building projects in the New York market.
• Atelier Ten: Specialist environmental design consultancy focused on high-performance, Passive House, and net-zero buildings. Closely comparable to Dagher's specialized sustainability, energy modeling, and CFD consulting services.
• Integral Group: Engineering firm specializing in MEP, energy modeling, commissioning, and net-zero building design. Strong overlap with Dagher's high-performance building and sustainability consulting offerings.
• PAE Consulting Engineers: MEP engineering firm with a strong sustainability and high-performance building focus. Comparable in service mix to Dagher with a similar size and project orientation.

Broad incumbents

• Buro Happold: Global engineering consultancy with strong sustainability, energy modeling, and building services practices. Competes with Dagher on high-performance and Passive House projects but at much greater scale and broader service portfolio.
• Arup: Global engineering and sustainability consultancy with deep NYC presence. Competes with Dagher on high-performance, sustainable building design and energy consulting but offers a much broader portfolio including structural and civil.

Market position

Strengths4 records

Weaknesses4 records

Competitive moat2 records

Key risks5 records

Key highlights6 records

Customer concentration

• LinkedInlinkedin.com/company/dagher-engineering

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 Dagher Engineering, PLLC