Rennia Engineering Design

What Rennia Engineering Design does

Rennia Engineering Design, PLLC (RED) is a multi-discipline engineering firm headquartered in Dover Plains, New York, founded in 2008 by Richard A. Rennia Jr., P.E. after his departure from a larger engineering firm. The firm provides civil, environmental, and structural engineering services across the full project lifecycle — from pre-planning and design through construction management, inspection, and operations/maintenance support — for both private and public sector clients in the Hudson Valley region spanning Westchester County to Greene County.

Service offerings include land development and site planning, hydraulic and hydrological modeling, stormwater management and SWPPP development, water and wastewater system design (including artificial wetland treatment systems for sanitary and industrial waste streams), SEQRA environmental compliance and permitting, structural design for commercial/municipal/residential projects, recreation facility design, and buildings and facilities management. The firm uses industry-standard tools including AutoCAD Civil 3D and HydroCAD and emphasizes regulatory familiarity with NYSDEC, NYSDOH, and 10 States Standards.

RED operates as a founder-owned professional services firm using a quote-based, project-based revenue model with direct client engagement and relationship-based selling. The staff comprises Licensed Professional Engineers, Designers, and Technicians with over 50 years of combined experience. The firm markets itself on a "small firm atmosphere" with hands-on principal involvement and "Value Engineering" to deliver cost-efficient designs on time and on budget. No external funding, M&A activity, or institutional ownership is present.

Name

Rennia Engineering Design

Legal name

Rennia Engineering Design, PLLC

Website

https://renniadesign.com

Company type

Private

Founded year

2008

Operating status

Operating

Headcount range

1–10 employees

Short description

Rennia Engineering Design, PLLC is a founder-owned civil, environmental, and structural engineering firm in Dover Plains, New York, serving municipal, institutional, commercial, and private clients across the Hudson Valley with project-based design, permitting, and construction management services.

Ownership category

akta.pro rank

Product category

Civil Engineering Services

NAICS

Engineering Services (541330), Environmental Consulting Services (54162), Architectural, Engineering, and Related Services (5413)

SIC

Services-Engineering Services (8711), Services-Engineering, Accounting, Research, Management (8700)

akta.pro primary industry

Civil & Structural Engineering Consulting (BPAHAIAA)

akta.pro secondary industries

Water, Wastewater & Hydraulics Engineering Consulting (BPAHAIAD), Environmental & Permitting Compliance During Construction (Erosion Control, Wildlife Mitigation, Monitoring) (EUAMAFAM), Construction Management (Agency/Owner’s Rep) (IMAFAAAC)

Keywords

• Civil engineering design
• Environmental engineering services
• Structural engineering design
• Stormwater management design
• Wastewater treatment design

Headquarters

HQ city

Dover Plains

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, Infrastructure

Revenue model

1. Engineering Design Services: Professional engineering services including civil, environmental, and structural engineering design for private and public sector clients. Services are project-based and span the entire project lifecycle from pre-planning through operations and maintenance.

Go-to-market motion1 record

Distribution channels1 record

Marketing channels1 record

Core offering

Rennia Engineering Design, PLLC is a multi-discipline civil, environmental, and structural engineering firm that provides engineering design, construction management, permitting, and operations and maintenance support to private and public sector clients in the Hudson Valley region of New York. Services are delivered project-by-project across the full lifecycle of land development, stormwater, wastewater, water, and structural projects. The firm emphasizes hands-on founder involvement, cost-efficient constructible design, and regulatory compliance expertise.

Product overview

Rennia Engineering Design, PLLC (RED) is a multi-discipline engineering firm providing a comprehensive suite of engineering services for both private and public sector clients. The firm operates as a single integrated offering rather than a platform-plus-modules architecture, delivering services across the project lifecycle from pre-planning through operations and maintenance. The core portfolio includes Civil, Environmental & Structural Engineering Design; Construction Management & Costing; Site Development Design & Planning; Municipal/Institutional Design Services; Environmental Compliance/Permitting (SEQRA); Hydraulics & Hydrology; Stormwater Management and Design; Water Design; Wastewater Design including Artificial Wetland Treatment Systems; Project Management; Operation and Maintenance Support; Structural Design; and Construction Inspection and Management. The firm emphasizes its 'small firm atmosphere' with a hands-on approach, providing cost-efficient designs through experienced Licensed Professional Engineers, Designers, and Technicians with over 50 years of combined experience.

Differentiator

Problem solved

Functional benefit

Products and services

• Civil, Environmental & Structural Engineering Design Multi-discipline engineering design services covering civil, environmental, and structural engineering for private and public sector projects across the Hudson Valley.
• Site Development Design & Planning Land development and site planning services guiding projects through design and permitting for local, state, and federal regulatory requirements, including subdivisions, lot line adjustments, and complex commercial site plans.
• Construction Management & Costing Construction management and cost estimation services to oversee project execution and maintain budget control.
• Stormwater Management and Design Stormwater management design including development of Stormwater Pollution Prevention Plans (SWPPPs) and Stormwater Retrofit Practices, with runoff quantification, drainage analysis, and management planning covering diversion, retention, treatment, and transport.
• Hydraulics & Hydrology / Hydrologic and Hydraulic Modeling Hydraulic and hydrological assessment services applying fluid mechanics expertise to quantify volumetric flow rates, flow depth, flow velocity, and forces from flowing water on surfaces and structures.
• Water Resources Engineering / Water Design Engineering design and oversight services for public water system suppliers including schools, restaurants, apartment complexes, mobile home parks, offices, and private communities, spanning source development through treatment system design.
• Wastewater Treatment System Design Onsite sewage treatment system design for commercial and residential projects, including discharge to ground or surface waters, and a premier offering of artificial wetland treatment systems for sanitary and industrial waste streams.
• Environmental Compliance / Permitting (SEQRA) Environmental compliance and permitting guidance through municipal boards and state/federal agencies, including State Environmental Quality Review Act (SEQRA) navigation, wetlands and endangered species considerations, and NYSDEC/NYSDOH coordination.
• Municipal / Institutional Design Services Engineering design services for municipal and institutional projects including buildings, facilities management, and recreation facility design and planning.
• Project Management Services Project management services advancing projects from conceptual plan to construction, including process management, approval coordination, and resource coordination across the full project lifecycle.
• Operation and Maintenance Support Operations and maintenance support services to help maintain and operate constructed systems, including development of comprehensive maintenance schedules.

Quantifiable outcome

• Projects completed on time and on budget

Segments3 records

Ideal customer profiles3 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature3 records

Partnerships

One partnership is on record.

• New York State Department of Environmental Conservation (NYSDEC)supportingOthersRED maintains relationships with regulatory agencies for project permitting and compliance. NYSDEC is referenced as a key regulatory body for environmental projects.

Scale indicators3 records

Recent moves4 records

Expansion highlights3 records

Broad incumbents

• HDR: Global engineering firm with significant water resources, environmental, and infrastructure practices. Competes with RED on municipal water/wastewater and stormwater work in NY, but at much larger scale and broader service portfolio.
• Tetra Tech: Large global engineering and consulting firm with deep water, wastewater, environmental, and stormwater practices. Provides overlapping capabilities to RED at municipal and institutional clients, but at significantly larger scale and broader portfolio.
• CDM Smith: Major engineering and construction services firm with strong water, wastewater, and environmental practices. Competes for the same municipal water/stormwater RFPs as RED but as a broad incumbent offering a much wider portfolio.

Direct peers

• Barton & Loguidice: New York-based engineering, planning, and environmental firm with strong municipal water, wastewater, stormwater, and site/civil practices. Directly comparable in client base (municipal/institutional), services, and regional focus on Upstate and Hudson Valley NY.
• LaBella Associates: Multi-discipline engineering and architecture firm headquartered in Rochester, NY with significant civil, environmental, water/wastewater, and municipal engineering practices across the Hudson Valley and broader New York. Highly comparable service mix, geographic overlap, and similar multi-discipline engineering consulting model.
• Colliers Engineering & Design (formerly Maser Consulting): Mid-size engineering firm with strong civil/site design, water resources, environmental, and municipal practice across NY and the Northeast. Directly comparable in service breadth and project types; a likely competitor on Hudson Valley municipal and commercial work.
• Passero Associates: Multi-discipline engineering and architectural firm serving NY and the Northeast with civil/site development, environmental, and water resources capabilities. Closely comparable mid-size professional services model and municipal/commercial client base.
• CPL (Clark Patterson Lee): New York-headquartered multi-discipline engineering, architecture, and survey firm with civil/site, water/wastewater, environmental, and municipal capabilities. Comparable mid-size consulting model with strong Upstate/Hudson Valley presence.
• Tectonic Engineering Consultants: NY/NJ-area multi-discipline engineering and surveying firm offering civil/site, geotechnical, environmental, and construction management services. Comparable mid-size firm with overlapping civil/environmental consulting capabilities and regional client base.
• M.J. Engineering and Land Surveying: New York-based civil engineering, land surveying, and environmental firm providing site development, water/wastewater, and municipal services. Comparable mid-size professional services firm with overlapping client types in Upstate/Hudson Valley NY.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat3 records

Key risks5 records

Key highlights6 records

Customer concentration

• LinkedInlinkedin.com/company/rennia-engineering-design

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 Rennia Engineering Design