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Business Details
27 Years
experience
Award-Winning Architectural Design in Riverside
Tr Design Group is a faith-driven architectural firm where talent and purpose converge to create meaningful spaces. Founded in 1999, our work is rooted in the belief that architecture should honor both divine gifts and community needs. With over 35 years of leadership from President Thomas Riggle, we deliver award-winning designs across diverse sectors including churches, civic buildings, and educational facilities. Our team of seasoned architects combines technical expertise with servant leadership, ensuring projects align with client visions and community values. We prioritize quality construction documents to minimize costs and change orders while maintaining principal involvement throughout every project phase.

Our commitment to excellence extends to community engagement, as demonstrated by our collaborative approach to public projects and outreach initiatives. From concept to completion, we advocate for clients, integrating field insights to refine processes and enhance outcomes. With a portfolio spanning complex land development and specialized facilities, we serve as trusted partners in transforming architectural visions into reality. Our Riverside-based team remains dedicated to architectural innovation, ethical practice, and continuous improvement in service to both clients and the broader community.
Services
Church Architecture Civic Projects Commercial Design Educational Facilities Residential Development Healthcare Architecture Industrial Planning Aviation Facilities Land Development Tenant Improvements
Details
  • Year established: 1999
Highlights and features
  • We offer 30+ years of combined architectural experience with principal-led project management.
  • Our faith-driven approach ensures ethical design solutions aligned with community values.
  • We specialize in complex public projects requiring community engagement and regulatory coordination.
  • Our quality construction documents reduce change orders and control project costs.
  • Guaranteed principal involvement ensures consistent vision throughout every project phase.
Associations and certifications
  • American Institute of Architects
  • National Council of Architectural Registration Boards
What people say
Exceptional presentations Community-focused designs Quality documents Experienced team Faith-driven values
Services
Church Architecture
Specializing in sacred spaces, we design churches and religious facilities that balance spiritual significance with functional needs. Our services include sanctuary renovations, classroom expansions, and master planning for growing congregations. With projects like the 2,500-seat Reliance Church sanctuary remodel, we create worship environments that enhance community engagement while maintaining architectural integrity through detailed code compliance and accessibility solutions.
Civic Projects
We deliver comprehensive civic architecture solutions for libraries, community centers, and government facilities. Our expertise includes the award-winning Marcy Library Branch renovation and crisis treatment center designs. By integrating community input with technical precision, we create public spaces that meet regulatory standards while addressing evolving societal needs through thoughtful site planning and sustainable design practices.
Commercial Design
Our commercial architecture services cover office developments, retail centers, and mixed-use complexes. From the CBU Food Center to corporate office tenant improvements, we focus on creating functional, code-compliant spaces that enhance business operations. Our approach combines market knowledge with innovative design to maximize property value while meeting specific client branding requirements through comprehensive construction documentation.
Educational Facilities
We specialize in K-12, higher education, and vocational training facilities. Current projects include the CBU School of Nursing Annex and the School of the Future master plan. Our designs prioritize learning environments that meet ADA standards while incorporating flexible spaces for technological advancements, ensuring educational institutions receive durable, purpose-driven architectural solutions tailored to student and staff needs.
Residential Development
Our residential services include multi-family complexes, custom homes, and crisis residential treatment facilities. From the Village at CBU student housing to specialized care facilities like Casa Paseo Center, we create living spaces that balance comfort with regulatory compliance. Our team addresses zoning challenges and accessibility requirements while maintaining design aesthetics that enhance community integration and resident well-being.
People
Thomas Riggle
President
Licensed architect with 35+ years' experience, NCARB and AIA certified. Founded Tr Design Group in 1999, leading award-winning projects like Marcy Library renovations. Specializes in community engagement and regulatory coordination for complex public projects.
Rick Jaeger
Senior Project Architect
Licensed architect and ICC Certified Plans Examiner with technical expertise in project coordination. Joined Tr Design Group in 2007, focusing on scheduling, budgeting, and design documentation. Brings methodical approach to commercial and church architecture projects.
James Horecka
Senior Project Architect
AIA-certified architect with 45+ years' experience in constructability and accessibility solutions. Specializes in QA/QC for diverse project types including theme parks and civic facilities. Recognized for problem-solving expertise in complex architectural coordination challenges.
Leo Romero
Senior Project Manager
20+ years managing architectural projects from programming through construction. Experienced in civic, educational, and residential sectors with track record of 100+ successfully completed projects. Combines technical knowledge with crisis-management skills from chaplaincy background.
Questions
What architectural services does Tr Design Group specialize in?
We provide full-service architecture for churches, civic buildings, educational facilities, commercial spaces, and residential developments. Our expertise includes land development, code compliance, and community-engaged design for both public and private sector clients.
How does faith influence your design approach?
Our Christian values shape our commitment to ethical design and community service. We view architecture as a calling to create purposeful spaces that honor both clients' visions and societal needs through servant leadership and principled practice.
Can you handle complex public projects requiring community input?
Yes, we specialize in public projects requiring stakeholder engagement. Our team has successfully managed community outreach for library renovations, senior centers, and school developments, ensuring transparent communication and regulatory compliance.
What makes your firm different from other architecture practices?
We combine technical excellence with principal-led project involvement and faith-driven values. Our focus on quality documentation reduces construction costs, while our servant leadership approach ensures client-centric solutions tailored to each community's unique needs.
Do you work outside the Riverside area?
While based in Riverside, we serve clients throughout California. Our portfolio includes projects in Ontario, Temecula, and Brea, demonstrating our ability to navigate regional regulatory requirements while maintaining consistent design excellence.
How do you ensure project quality and cost control?
We produce detailed construction documents that minimize change orders and unexpected costs. Our quality assurance process incorporates field insights into design improvements, and we maintain strict budget oversight throughout each project phase.