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Find Basement remodelers in Ontario

Avatar for JBI General Construction & Renovations
JBI General Construction & Renovations
4.8(
39
)
Basement - Remodel

Serving Ontario, CA and surrounding areas

Approved

In business since 2017

Free estimates

Emergency services offered

"Mr Avila and his crew did amazing work, i had a complete master bath , hall bath and my kitchen remodeled and the work is to perfection. I love my house now and would highly recommend J A V to anyone wanting good quality work. They left the premises in cleaned order every day that they worked. They can be trusted to be left alone in your home. Very Satisfied"
Bathroom remodel
Bathroom remodel
Bathroom remodel
Bathroom remodel
Bathroom remodel

+67

Response time11 hrs
5 neighbors recently requested a quote
Recommended by93%of homeowners
Avatar for McCormick Home Builders, Inc.
McCormick Home Builders, Inc.
4.7(
42
)
Basement - Remodel

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."
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+1

Response time6 hrs
Recommended by17%of homeowners
Home Pro Remodeling & Construction, Inc.
4.1(
31
)
Basement - Remodel

Serving Ontario, CA and surrounding areas

Approved

In business since 2019

Free estimates

Credit card accepted

"I had my garden and bathroom remodel done. Albert and Samuel were professional, friendly, and a delight to work with. They're responsive and reliable. I also like the subcontractors whom they used on my project. They kept me informed of everything and I appreciate their excellent work."
Response time5 days
Recommended by77%of homeowners
Avatar for Oshri Construction
Oshri Construction
4.3(
6
)
Basement - Remodel

Serving Ontario, CA and surrounding areas

Approved

In business since 1986

Free estimates

Emergency services offered

"Asher and his team delivered the job on time and met our discussed estimates budget! They included my wife and I in the decision making process from beginning to end. They were respectful and a pleasure to work with and completely trustworthy. I would recommend them to friends and family without hesitation. -R"
Deck
Kitchen Remodel
Bathroom Remodel
Upscale Bathroom
Guest Bathroom

+99

Response time6 hrs
8 neighbors recently requested a quote
Recommended by75%of homeowners
Avatar for Monroy's Father & Son Construction
Monroy's Father & Son Construction
5.0(
4
)
Basement - Remodel

Serving Ontario, CA and surrounding areas

Approved

In business since 2006

Free estimates

Credit card accepted

"I worked with Daniel and he was very prompt and responsive, did exactly what he said he'd do. He worked underneath the house in an area I couldn't access. Took and showed me pics to illustrate the issues and he worked excellently."
Response time12 hrs
Response rate95%
1 neighbors recently requested a quote
Gima Construction
5.0(
2
)
Basement - Remodel

Serving Ontario, CA and surrounding areas

Approved

In business since 2010

Free estimates

Offers commercial services

We're a locally owned and operated company that values honesty, integrity and treats your home as if it were our own. We offer a variety of general Contractor home improvement services that are customizable to each individual project. We specialize in additions and kitchen remodels, but also offer a wide range of expertise for a variety of other projects. We pride ourselves on the quality of our work as well as our commitment to outstanding results. We look forward to building lasting relationships and guarantee your satisfaction!

Response time4 days
Recommended by100%of homeowners
True Vine Remodeling
5.0(
2
)
Basement - Remodel

Serving Ontario, CA and surrounding areas

Approved

In business since 2025

Free estimates

"True Vine was amazing from start to finish. They handled construction work at my home that was fully covered by insurance, and the entire process was smooth and stress-free. The workers were incredibly professional, friendly, and respectful of my home. They showed up on time, communicated clearly, and made sure everything was done right. The quality of the work was excellent, and the project was completed within the promised timeframe, which I truly appreciated. I highly recommend True Vine to anyone who needs remodeling, insurance-related work, or add-ons. They are reliable, efficient, and genuinely care about their customers. I’m very happy with the results!"
1 neighbors recently requested a quote
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Basement Remodel questions, answered by experts

It is common for a contractor to ask for a down payment before starting a project, especially for jobs that require purchasing materials and equipment or hiring a crew. The deposit amount can range from 10% to 50% of the total job cost. While a request for up to 50% is not unusual, a contractor should not ask for more than that, and you should never pay for a project in full before the work has begun. To protect yourself, always discuss payment terms before starting and have a written contract that outlines the project timeline and expectations. Additionally, be sure to hire reputable contractors and check their licensing and insurance before the project begins.

Common mistakes when finishing basement walls include neglecting proper insulation, insufficient moisture management, and poor ventilation. Not addressing these issues can lead to mold growth, water damage, and discomfort. Additionally, inadequate planning, improper framing, and rushing the project can result in subpar outcomes. 

It's essential to follow best practices, seek professional guidance if needed, and prioritize thoroughness and attention to detail.

Some older homes have toilets in the basement to combat sewage backups. This type of toilet, also known as a Pittsburgh potty, acted as a safety valve over the incoming sewer line. If a line backed up, it would back up into the toilet because it was the lowest fixture in the home, keeping it out of sight and away from the finished areas of the house.

Basement toilets were also used by workers with messy jobs, like those who worked in coal mines or steel mills. This way, they could clean up and avoid tracking dirt through their home.

The time it takes to finish or remodel a basement can vary significantly, ranging from a few weeks to several months or even up to a year. On average, the construction phase can take four to eight weeks, but the total project time can extend to three or four months when including planning and permits. The timeline depends on several factors, including the basement's size, design complexity, the scope of the work, and your contractor's availability. A more detailed breakdown for an average-sized basement might include: framing (3-5 days), electrical and rough-in plumbing (3-5 days), drywall installation (5 days), flooring (2-3 days), and final touches like painting and trim (about a week). If preliminary work like installing a waterproofing system or addressing structural issues is needed, the timeline could extend to six to twelve months. Factors like difficult access, material transport, and ventilation needs can also add to the project's duration.

Unless you have extensive experience in construction work, remodeling a basement is best left to a professional. There are several tasks associated with this project that require exact precision, including:

  • Replacing insulation 

  • Replacing carpet or other flooring 

  • Adding heating and cooling

  • Adjusting or adding walls and doors

  • Altering or adding plumbing elements

If any of these elements is done incorrectly, it could severely impact the quality of your basement remodel and be dangerous. Changing a basement often comes with code safety requirements, like egress windows and proper ventilation. Therefore, leaving it up to a professional is often the best decision.

The Ontario, CA homeowners’ guide to basement remodels

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