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Top-Rated Foundation repair specialists in Diamond Bar - Updated Nov 2026

Avatar for Alpha Structural, Inc.
Alpha Structural, Inc.
4.6(
241
)
Concrete Foundation - Repair

Serving Diamond Bar, CA and surrounding areas

Approved (Corporate)

In business since 1992

Free estimates

Emergency services offered

"Incredibly knowledgeable and trustworthy. Errin gave us a clear understanding concerning our foundation, deck and balcony needs. He was friendly and professional and easy to work with. Great experienced staff!"
Basement Addition
Basement Expansion
Caisson Supported Retaining Wall
Cantilevered Deck Design Build
Deck Expansion and Slope Failure with Retaining Wall

+323

Response time10 hrs
Response rate100%
11 neighbors recently requested a quote
AJB Concrete & Masonry Construction
5.0(
19
)

Serving Diamond Bar, CA and surrounding areas

Approved

In business since 1984

Free estimates

Credit card accepted

"AJB Construction did a great job. Workers were knowable in all areas of the work performed. Work site was cleaned up at the end of each day, project was started and completed as proposed. I would highly recommend AJB for any concrete or block work needed."
Masonry Project
Driveways - Concrete Project
Masonry Project
Concrete - Pouring & Repair Project
Concrete - Pouring & Repair Project

+48

Response time1 day
3 neighbors recently requested a quote
Recommended by94%of homeowners
Avatar for M E CONCRETE
M E CONCRETE
4.7(
21
)

Serving Diamond Bar, CA and surrounding areas

Approved

In business since 2000

Free estimates

Small jobs welcome

"Our project was one step and a landing on our porch. Approx. 30 sq feet. We had the top layer of tile removed and concrete around the door area chiseled and jack hammered away. They then cut fossil stone for risers and step/landing in large squares as requested. They did put up a moisture barrier at the entrance and calked after grouting the stone. This was done upon the City of Downeys expectations. I believe that wouldn't have been done had I not called the city to come by to clarify the code for this job. So my only complaint is that some workers, actually most don't keep up or research the code. Then when the city does visit you may have to tear down a project and re do it. That can be costly and frustrating. Our porch and step look great. Not sure if the cost to us was cheap, but it is done and looks great."
STONE
STONE
STONE
CONCRETE
DRIVEWAY

+3

Response time11 hrs
5 neighbors recently requested a quote
Recommended by100%of homeowners
Avatar for Just Stamping Concrete
Just Stamping Concrete
5.0(
28
)
Concrete Foundation - Repair

Serving Diamond Bar, CA and surrounding areas

Approved

In business since 2007

Free estimates

Credit card accepted

"I had a great experience working with this landscape designer. They were able to take my ideas and turn them into a beautiful, functional outdoor space. The team was professional, friendly, and the end result is stunning."
Concrete
Response time2 hrs
Response rate100%
3 neighbors recently requested a quote
Avatar for Groundworks
Groundworks
3.5(
176
)
Concrete Foundation - Repair

Serving Diamond Bar, CA and surrounding areas

Approved (Corporate)

In business since 1995

Free estimates

Warranties offered

"Bob Warren was simply terrific, i had a great experience consulting on my crawl space. Really, Ive never had a crawl space and while having one in my first home i did not know what to look for that was in need of repair. Bob did a thorough job looking over it for me and very honestly delivered me feedback. Turns out i am not in a dire need of repairs but when i do, i know who to turn to. Thank you Bob, and GroundWorks for the professionalism"
Foundation
Foundation
Foundation
Concrete
Concrete

+16

Response time11 hrs
95 neighbors recently requested a quote
Recommended by38%of homeowners
Avatar for Robert A. Garcia Concrete
Robert A. Garcia Concrete
4.8(
64
)

Serving Diamond Bar, CA and surrounding areas

Approved

In business since 2010

Free estimates

Emergency services offered

"Robert was outstanding! He?s a great communicator - and was attentive to our needs throughout the project. Over three mornings, he removed portions of our old back patio, repaired parts of the remaining concrete, then coordinating and finished the replacement of concrete for a slightly smaller patio. He made sure everything was completed in a timely manner, managed some cost adjustments and made sure to keep the area clean and organized. Exactly what we asked for! We would hire him again!"
Response time9 hrs
Response rate88%
Recommended by85%of homeowners
Avatar for McCormick Home Builders, Inc.
McCormick Home Builders, Inc.
4.7(
42
)
Concrete Foundation - Repair

Serving Diamond Bar, 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."
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.
.
.
.

+1

Response time6 hrs
Recommended by17%of homeowners
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