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  • Average homeowner rating star icon4
    Average homeowner rating
  • Verified reviews icon12
    Verified architectural services reviews

Verified Reviews for Architectural Service pros in Ontario, CA

*The Angi rating for Architectural Service companies in Ontario, CA is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Architectural Service needs.

*The HomeAdvisor rating for Architectural Service companies in Ontario, CA is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Architectural Service needs.

Last update on June 23, 2026

Find Architects in Ontario

Avatar for Drafting Design Services
Drafting Design Services
4.8(
18
)

Serving Ontario, CA and surrounding areas

Approved

Super Service Award Winner

In business since 2019

Credit card accepted

Offers commercial services

"If you?re here looking for an architect, look no further. Francisco is the man for the job. He helped us with a garage to ADU conversion. Francisco kept us informed and communicated with us throughout the entire project. He was very professional, helpful and patient. We had tons of questions and he had the answers. He is very efficient and great at his job. We would hire him again with no hesitation. Thank you Francisco for making for making this process a breeze!"
Response time2 days
8 neighbors recently requested a quote
Recommended by70%of homeowners
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Avatar for Pac Sands Corp
Pac Sands Corp
5.0(
7
)

Serving Ontario, CA and surrounding areas

Approved

Super Service Award Winner

In business since 2017

Free estimates

Credit card accepted

"We did a full remodel of our place, full new kitchen, and expanded our place into the backyard for a new master suite. Pac Sands did a really great job with our designs. Great tools that made the communication easy with the plans and changes we needed. And they handled the engineering and permitting too, which was great. Highly recommend."
6-Plex Aerial view
6-Plex Render
Carlsbad 6-Plex Axo
Response time3 days
52 neighbors recently requested a quote
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Avatar for CODAspaces
CODAspaces
5.0(
6
)

Serving Ontario, CA and surrounding areas

Approved

In business since 2007

Free estimates

Small jobs welcome

"Codaspaces and Jerome were excellent to work with. Reasonable in price, and great on execution and creative solutions."
Response time1 day
6 neighbors recently requested a quote
Recommended by66%of homeowners
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Avatar for Viveros landscaping
Viveros landscaping
4.4(
28
)

Serving Ontario, CA and surrounding areas

Approved

In business since 2015

Free estimates

Emergency services offered

"Adrian did an amazing and efficient job. Everything was very professional and came out looking beautiful."
Landscaping Project
Landscaping Project
Landscaping Project
Landscaping Project
Beforw

+131

Response time1 day
12 neighbors recently requested a quote
Recommended by65%of homeowners
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Avatar for Michael Lancy Architect, Inc.
Michael Lancy Architect, Inc.
5.0(
4
)

Serving Ontario, CA and surrounding areas

Approved

In business since 1999

Small jobs welcome

Offers commercial services

"Mike was very professional, all options were fully explained to me. He delivered as promised and continues to make himself available if issues should arise. I would highly recommend his firm."
San Dimas ADU
San Dimas ADU
San Dimas ADU
San Dimas ADU
San Dimas ADU

+12

Response time2 days
Response rate99%
5 neighbors recently requested a quote
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Avatar for Allenbach Architecture
Allenbach Architecture
3.5(
7
)

Serving Ontario, CA and surrounding areas

Approved

In business since 1997

Free estimates

Customers say: Quality work

"I wanted to hire, but landlord wanted to use their choice. Allenbach called me immediately and was great about listening to my needs and had great communication."
Custom Kitchen
Back Yard
Kitchen
After View of Remodel
Custom Garage for a Gear Head buddy

+5

Response time1 day
Recommended by100%of homeowners
Request Quote
Avatar for McCormick Home Builders, Inc.
McCormick Home Builders, Inc.
4.6(
35
)

Serving Ontario, CA and surrounding areas

Approved

In business since 2017

Free estimates

Customers say: True professional

"We hired McCormick Home Builders to remodel our living room, and we are beyond pleased with the result. The team was professional, worked efficiently, and Aris design ideas made a huge difference. The room feels so much brighter and more spacious. This was the best decision we made for our home, and we were already planning our next remodel with them."
.
.
.
.
.

+1

Response time6 hrs
Recommended by19%of homeowners
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Avatar for Evolution Drafting
Evolution Drafting
3.4(
103
)

Serving Ontario, CA and surrounding areas

Approved

In business since 2018

Free estimates

Emergency services offered

"I hired them to create plans for an apartment building. The process was quick and painless. Cost was good. The plans are full complete abd ready to take to builders for quotes. I will definitly use them again."
Zeal Floor Plan
Charcoal
Palm Floor Plan
Charcoal Floor 2
Charcoal Floor 1

+23

Response time1 day
Response rate100%
50 neighbors recently requested a quote
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Showing 1-10 of 443
Architects questions, answered by experts

Architects often oversee project management to ensure design adherence, coordinate with contractors, and address onsite challenges.

You'll find Arts and Crafts homes across the country in varying styles. On the East Coast, bungalows and Tudor Revivals fill the Boston area through New Jersey. In the West, Mission-style homes incorporate terracotta shingles, white stucco siding, and rounded archways.

The essential difference between an architect and an engineer is that architects typically focus more on the aesthetic design of buildings, although not without consideration for the structural integrity of the building. Engineers focus more on the structural, technical, and practical aspects of whether and how an architectural design can be built as drawn. You may need to hire both types of professionals if you’re designing and building a new home.

Villa exterior features often include large windows, arched doorways, patios, terraces, greenery, and gardens. Common exterior colors for villas are whites and off-whites, soft browns, and clay tones. 

Whether you’re building a new home or building an extension on your existing property, you will likely need both a structural engineer and an architect. A structural engineer will determine what loads your foundation and framing can safely handle, and an architect will draw plans according to those structural calculations to simplify the building process. You can start by contacting a structural engineer near you, as many work alongside architects and can get all of the prep work done at once.

The Ontario, CA homeowners’ guide to architectural services

From average costs to expert advice, get all the answers you need to get your job done.

See all articles