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HMC Architects
“Great place to work!”
Best Architects in Ontario, CA
24 firms listed · 4 in Ontario · 3 open weekends · 20 rated 4.5+ · 6 show a license
Data verified October 15, 2026
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Ariza Architect & Associates
- Plans
“He answered all our questions and concerns in a professional manner and would highly recommend to our friends and family and anybody else looking for an architect.”
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Brian R. Bloom Architect
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Tjs Architects
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ACC & Engineering
- Project
- Plan
- Remodel
“He was involved every step of the way from the drawing of the plans and communicating with the contractor to doing site visits to make sure everything was done to code.”
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Andresen Architecture Inc
“Very nice knowledgeable experienced and humble crew.”
Listed for property owners in and around Ontario, CA, these 24 firms take architectural work. The project types each one handles, the stages of service it offers and any license it names are drawn from its own website, next to ratings and quotes from public reviews.
Area overview: Ontario, CA
4 of the 24 firms we list are based in Ontario; the other 20 serve Ontario from towns including Corona (13 mi), Riverside (14 mi) and Anaheim (20 mi). 23 of the firms on this page have a rating, from 4.0 to 5.0 across 183 reviews; 1 has 50 or more reviews and 20 are rated 4.5 or higher. 3 are open on Saturdays and 1 on Sundays. 6 show a license on their websites and 6 have a BBB rating of A or A+. Domain records put 15 websites of the firms on this page at ten or more years old; the oldest dates from 1996. 3 give free estimates and 3 are family- or locally-owned. 1 has Spanish-speaking staff. We have a website on file for 23 of the firms on this page; 22 publish a contact page and 21 list a public email. We count these figures across the firms on this page; distances are straight-line, and hours and prices change, so confirm the details with the firm before you book.
How many listed architects say they are licensed?
6 of the 24 firms on this page show a license on their websites. Ask for the number and check it against the state board, which publishes the register and any disciplinary record. Confirm the individual who will seal your drawings is the one who holds the license, not just a principal whose name is on the door.
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Ruhnau Clarke Architects
“In the heart of downtown the right next to City Hall this architectural office it's pretty neat, building buildings throughout whole Southern California.”
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Handyman Contractor
“Great service!”
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Epic Design Build Inc
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CW Restaurant Permit Plan Services
- Health
“They not only delivered accurate drawing in about 24 hours way before committed timelines but suggested good improvisations that were missing and could have further delayed approval process.”
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ANW Construction Inc
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Birdgroup Construction
“Good work dad its Izaiah”
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J.R. Miller & Associates
“I specially liked the attention to detail made on every project they have worked on and assuring that the client's vision was met.”
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Amor Architectural Corporation
“Their floor plan are detailed, RFI response usually take less than 24 hours.”
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McPherson Engineering
“Ryan is extremely knowledgeable and professional, he is prompt with his communications and replies, and did an outstanding job helping me calculate the structural reworked for my remodel.”
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Verxile Design & Expediting
“Thanks for your very informative website, i was impressed on the mission of the Company and how its most concern in customer first”
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GO Architects
- Team
“Is a phenomenal place of business, with a trusting, collaborative, and honest team of professionals always providing Fabled Service, Second to None!”
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Pirona Design Group
- Codes
- Team
“The Pirona Design Group is by far the best architect/fabrication company I have ever had the pleasure of working with directly.”
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Daniel Dascanio Residential Architect
- Plans
- Home
“Dan was a master at the delicate balance of being tenacious over the long hall, timely in providing needed work results and having a patient upbeat professionalism is dealing with all parties involved.”
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Alpine Home & Design
“The whole process is straight forward and affordable.”
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Stewart Design and Engineering
- Team
“I began working with them years ago and have truly appreciated the continued professionalism from the entire team throughout the years.”
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Alexander & Hibbs Inc
“Great place to work”
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VP Builder Services Inc.
“Mac Edward Ver Planck III”
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Fabric Wallcraft
“They install acoustical wall, Hunter Douglas roller shades, Barrisol ceilings, among others.”
Architectural Services in Ontario, CA Cost Estimates
Minimum cost
$728
Maximum cost
$38775
National Average
$6355
Avg Per Hour Rates
$228
$2423
$10853
Fair price range is based on 431 cost profiles
Why these companies made our list
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