Lonz Pools Service

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Concrete location

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About

Great service for Great pricess. Service areas in Ontario, Rancho Cucamonga, Upland. All of San Bernardino. and Riverside Also Service Commercial accounts. We also do Plaster work, Cement work. Pump and filter installs

Overview

Hired 63 times

Background checked

2 employees

14 years in business

Business hours

SunClosedMon7:00 am - 6:00 pm

Payment methods

This pro accepts payments via Cash, Check, Credit card, PayPal, Venmo, and Zelle.

Services offered

Work needed

Pour new concrete for entire area

Concrete location

Patio or porch

Property type

Residential

Commercial

Projects and media

Reviews

Customers rated this pro highly for responsiveness, value, and professionalism.

3.3

20 reviews

5

55%

4

0%

3

0%

2

5%

1

40%

Your trust means everything to us. Learn about our review guidelines.

Read reviews that mention:

Frida B.

Jul 9, 2026

•

Hired on Thumbtack

I called Mario to get help with my dads pool. He was there within an hour! His pump was not working. Feedback i received from my dad "I love that guy" He knows his stuff. Fixed it just like that! Couldn't tell you the last time I heard my dad say he loved somone ha..ha.. I even warned Mario dad gets a lititle grumpy and has no filter. He is going to be his new pool guy from here on out. Knows his stuff and priced wellyou can't go wrong! Thanks Mario!

Details: Outdoors • In-ground pool • Home

Swimming Pool Inspection

Justin L.

Jul 3, 2025

•

Hired on Thumbtack

Mario came to my house and took care of business for my pool. After just one visit the pool looks better than it has in quite some time. His rates are better than most and he’s down to earth.

Details: Cleaning and Maintenance • In-ground pool • Concrete • Chlorinated water • Pool water is clear • Algae • Leaves • I do not need my pool drained • Once a week

Swimming Pool Cleaning, Maintenance, and Inspection

ZUOFEI W.

Nov 30, 2023

•

Hired on Thumbtack

Mario did a great job replacing my pool filter. His expert recommendations and efficient replacement of my pool filter, along with impeccable plumbing work, exceeded my expectations. Mario’s reasonable pricing adds to the overall satisfaction.

Details: In ground • Outdoors • Concrete • Filter replacement • Leaks

Swimming Pool Repair

Gina K.

Aug 7, 2026

•

Hired on Thumbtack

come and check out the product that needs warranty so I can have secret

Details: Cleaning and Maintenance • In-ground pool • Concrete • Chlorinated water • Pool water is green or cloudy • Algae • I do not need my pool drained • Once a week

Lonz Pools Service's reply

Honestly your review doesn't even make sense.

Swimming Pool Cleaning, Maintenance, and Inspection

Ken L.

Apr 4, 2023

•

Hired on Thumbtack

Great job. It’s still working. Had new multiport installed on sand filter

Details: In ground • Outdoors • Concrete • Non-functional pump

Lonz Pools Service's reply

Great to hear that. thanks for the review.

Swimming Pool Repair

Credentials

Background Check

Mario Diaz

Lonz Pools Service

About

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Popular in Ontario

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