What Quiddity does

Quiddity, Inc. (formerly Jones and Carter, founded 1976) is an employee-owned civil engineering professional services firm headquartered in Bellaire (Houston), Texas, with 700+ employees across 14 offices — 12 in Texas and 2 in Florida (Lakeland and Tampa). The firm provides multidisciplinary civil engineering design, planning, surveying, construction management and inspection, and program management for transportation, water and wastewater, environmental, hydrology and hydraulics, structural, electrical/SCADA, permitting, and landscape architecture projects.

Its core customers are state and municipal agencies (notably TxDOT and Houston Public Works), municipal utility districts, counties, and private developers across healthcare, industrial/warehouse, single-family and master-planned community, mixed-use, aviation, and water/wastewater segments. Featured project work spans the Lago Mar Crystal Lagoon (largest in Texas), the Bagby Street Improvement Project in downtown Houston, the North & South Kuehler Wastewater Treatment Plant in New Braunfels, and Amazon's 4.8M sq ft 'Project Charm' fulfillment center in Pflugerville.

Quiddity earns revenue through professional services engagements on a quote-based, project-specific fee model, winning work via competitive bidding on public-sector projects and direct engagement with private developers. The firm markets itself through a professional-services website, the 'Texas by Design' podcast, an industry insights blog, and social channels, while delivery is executed by in-house engineering teams across its office network. Recent moves include the 2024 launch of an environmental division, the 2026 opening of a Waco office, ongoing Florida build-out, and senior leadership additions in transportation, public infrastructure, and business development.

Name

Quiddity

Legal name

Quiddity, Inc.

Website

https://quiddity.com

Company type

Private

Founded year

1976

Operating status

Operating

Headcount range

501–1,000 employees

Short description

Quiddity is an employee-owned civil engineering firm founded in 1976, providing design, planning, surveying, and construction management/inspection services to TxDOT, municipalities, and private developers across 14 offices in Texas and Florida.

Ownership category

akta.pro rank

Product category

Civil Engineering Services

NAICS

Water Supply and Irrigation Systems (221310)

SIC

Water, Sewer, Pipeline, Comm & Power Line Construction (1623), Heavy Construction Other Than Bldg Const - Contractors (1600)

akta.pro primary industry

Water, Wastewater & Hydraulics Engineering Consulting (BPAHAIAD)

Keywords

• Civil engineering services
• Transportation infrastructure design
• Water and wastewater engineering
• Construction management inspection
• Land surveying planning

Headquarters

HQ city

Bellaire

HQ country

United States

HQ region

North America

Offices12 records

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: Professional engineering services including civil engineering design, planning, surveying, construction management and inspection for infrastructure projects

Go-to-market motion1 record

Distribution channels1 record

Marketing channels5 records

Core offering

Quiddity is a full-service civil engineering firm providing design, planning, surveying, and construction management and inspection services for public and private infrastructure projects. The firm delivers transportation, water and wastewater, drainage, site civil, structural, traffic, environmental, permitting, planning and landscape architecture, electrical/SCADA, program management, and water district services across Texas and Florida through 14 offices and more than 700 employees.

Differentiator

Problem solved

Functional benefit

Products and services

• Construction Management & Inspection Construction management and inspection services for civil infrastructure projects, supporting clients through the construction phase of transportation, water, wastewater, and site development projects.
• Transportation Engineering Planning and design services for highway, street, and transit infrastructure projects for state agencies such as TxDOT and municipal clients.
• Site Civil Services Civil engineering services for land development including grading, drainage, utilities, and site infrastructure for commercial, residential, and industrial developments.
• Water Distribution and Treatment Engineering services for water treatment plants, distribution systems, and storage facilities for municipalities, water districts, and private developers.
• Wastewater Collection and Treatment Engineering services for wastewater treatment plants, collection systems, and lift stations for municipalities and water districts.
• Surveying Professional land surveying services (RPLS) supporting civil engineering, site development, and infrastructure projects across the firm's markets.
• Environmental Services Regulatory and permitting services supporting transportation, residential, commercial, healthcare, and water/wastewater projects, led by the Environmental Division.
• Permitting Permitting services supporting regulatory approvals for infrastructure, land development, water, and environmental projects.
• Planning + Landscape Architecture Master planning and landscape architecture services for master-planned communities, mixed-use developments, and public spaces.
• Structural Engineering Structural engineering services supporting infrastructure and land development projects.
• Hydrology & Hydraulics Hydrologic and hydraulic analysis and design for stormwater management, drainage, and flood control projects.
• Traffic Engineering Traffic engineering studies, traffic impact analyses, and signal/roadway design for public agencies and private developers.
• Single-Family Developments Engineering services tailored to single-family residential subdivisions, including site civil, utilities, drainage, and platting support.
• Water District Services Engineering and consulting services dedicated to municipal utility districts (MUDs) and water authorities for water and wastewater operations.
• Electrical, Instrumentation, and SCADA Development Electrical, instrumentation, and SCADA system design and development services for water, wastewater, and industrial clients.
• Program Management Program management services for multi-project capital improvement programs for public agencies and large private developers.

Named customers6 records

Segments5 records

Ideal customer profiles2 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Scale indicators4 records

Recent moves9 records

Expansion highlights5 records

Direct peers

• LJA Engineering: Texas-based, employee-owned engineering and surveying firm offering civil, transportation, water, and infrastructure services to public agencies and private developers — directly overlapping with Quiddity's core offering in the same regional markets.
• Kimley-Horn: One of the largest and fastest-growing U.S. civil engineering consulting firms, employee-owned like Quiddity, with a comparable mix of transportation, water, environmental, and land development services to public- and private-sector clients across the Sun Belt.
• Lockwood, Andrews & Newnam (LAN): Texas-headquartered civil engineering firm with transportation, water, and public-infrastructure practices; competes for the same TxDOT, municipal, and developer engagements as Quiddity across Texas.
• Freese and Nichols: Texas-based engineering and consulting firm with strong water, wastewater, and infrastructure practices serving municipalities and developers, directly comparable to Quiddity's Water & Wastewater and public infrastructure service lines.
• Raba Kistner: Texas-based engineering and consulting firm providing civil, geotechnical, environmental, and construction management services — closely mirroring Quiddity's full-service civil engineering + CM&I model in overlapping Texas and Sun Belt markets.
• Halff Associates: Texas-headquartered, employee-owned civil engineering firm with a nearly identical service mix (transportation, water/wastewater, environmental, land development) and a comparable set of TxDOT and municipal clients, making it Quiddity's closest head-to-head competitor in Texas.

Broad incumbents

• AECOM: Global infrastructure consulting firm with large transportation, water, and environmental practices; competes with Quiddity on the largest Texas and national infrastructure programs and sets the upper bound of scale in the engineering services market.
• Burns & McDonnell: Large national employee-owned engineering firm with significant transportation, water, environmental, and power practices; competes for the same TxDOT and municipal work as Quiddity but operates at much greater scale and across many more verticals.
• AtkinsRéalis: Global engineering services firm with significant Texas presence in transportation, water, and environmental consulting — directly competing with Quiddity for public-sector work, and notably the prior employer of Quiddity's new environmental division lead.
• Jacobs Solutions: Global engineering and professional services firm with major transportation, water, and environmental practices; competes for large Texas and federal infrastructure programs and represents a much larger incumbent alternative to Quiddity.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks6 records

Key highlights6 records

Customer concentration

• YouTubeyoutube.com/@QuiddityEngineering
• LinkedInlinkedin.com/company/quiddity-engineering
• Instagraminstagram.com/quiddityeng
• Xx.com/quiddityeng
• Facebookfacebook.com/quiddityeng

Revenue estimate

Valuation estimate

Number of profiles

Profiles6 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 Quiddity