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Find Basement remodelers in Ontario

Christie Architecture LLC
4.9(
39
)

Serving Ontario, OR and surrounding areas

In business since 2004

Free estimates

"Lisa is a genius! With creativity and precision, she maximized every nook and cranny of our tiny 1906 cottage and brought it into the 21st century, while maintaining its original charm and character. Our "new" home is so much more functional now, and a delight to live and work in. Lisa took the lead on our projects (kitchen, bathroom, basement), but Adam is equally savvy. Both are fantastic listeners, brainstormers, collaborators, total professionals and all-around lovely human beings. We highly recommend Christie Architecture, and look forward to working with them again in the future!"
Recommended by97%of homeowners
Avatar for A-Built Construction
A-Built Construction
5.0(
9
)

Serving Ontario, OR and surrounding areas

In business since 2015

Free estimates

"I recently had the pleasure of working with A-Built Construction for the framing of my custom house, and I am thrilled with the results. From the moment I engaged their services, it was clear that A-Built Construction was dedicated to providing top-notch craftsmanship and ensuring a seamless construction process. With their extensive experience in framing, A-Built Construction was able to bring my vision to life with precision and skill. The quality of their workmanship was evident in every aspect of the framing process. From laying the foundation to erecting the walls and roof, they demonstrated exceptional attention to detail and a commitment to delivering a structurally sound and aesthetically pleasing end result. One of the things that stood out during my collaboration with A-Built Construction was their ability to seamlessly integrate ideas and modifications into the framing plans. They were highly responsive and receptive to my input and worked closely with me to ensure that every aspect of the framing aligned with my vision for the house. Their expertise and creativity were invaluable in making design adjustments that enhanced the overall functionality and appeal of the project. The professionalism and reliability of the A-Built Construction team were outstanding. They maintained open lines of communication throughout the construction process, updating me regularly on progress and addressing any concerns or questions I had promptly. Their commitment to clear and transparent communication fostered a strong sense of trust and confidence in their abilities. Not only did A-Built Construction deliver exceptional craftsmanship, but they also adhered to agreed-upon timelines and budgets. They displayed a strong work ethic and ensured that the framing work was completed within the specified time frame without compromising on quality. This level of professionalism and punctuality added further peace of mind and made the entire experience stress-free. In conclusion, I wholeheartedly recommend A-Built Construction for any framing needs. Their commitment to detail, exceptional craftsmanship, collaborative nature, and professionalism exceeded my expectations. If you're looking for a reliable and skilled team to frame your custom house, A-Built Construction is an excellent choice. Working with them was a true pleasure, and the end result was nothing short of remarkable."
Midvale Shop
Weiser Barndominium
Midvale Shop
Weiser Barndominium
Midvale Shop

+9

Recommended by100%of homeowners
Avatar for Rhino Restoration & Remodeling
Rhino Restoration & Remodeling
5.0(
4
)

Serving Ontario, OR and surrounding areas

In business since 2017

Free estimates

Emergency services offered

We are a 24/7 Water Damage, Mold and Bio Growth Remediation company serving the Treasure Valley and beyond. We have 12 years combined construction and remodeling experience and have been actively restoring water damage and remediation mold and biogrowth with 1 800 Water Damage of Meridian from August 2015 to February 2017. Call today to schedule your FREE water damage and mold inspection.

Recommended by100%of homeowners
American Maintenance Company
5.0(
3
)

Serving Ontario, OR and surrounding areas

In business since 1996

Free estimates

Credit card accepted

American Maintenance Company is a trusted construction company for residential remodeling and construction services. For 20 years we have been providing quality general contractor work at a very reasonable price. From office renovations to kitchen and bathroom remodeling, we have the knowledge and know-how to get the job done!\nCall Darrell Knight at (541) 331-3105 today for more information and to schedule your free estimate.\nOur construction company is lead by experienced professionals who have more than 20 years experience. American Maintenance Company has earned a reputation in the industry for being efficient and knowledgeable in all areas of construction and will provide personal service from beginning to end.

Recommended by100%of homeowners
Avatar for Specialty Construction LLC
Specialty Construction LLC
5.0(
2
)

Serving Ontario, OR and surrounding areas

In business since 1989

Free estimates

Emergency services offered

Specialty Construction is a family business licensed buy the state of Oregon as a general contractor. We provide a broad range of services, and have been doing so since 1989. My son Jason and I work together with you to identify the work scope, design, estimate the cost of the job within your budget. Our list of satisfied customers will encourage your choice for who you can count on to be help you get the job done with the flavor of goodness all the way through.

base of deck
footers for stairs and walk
Completed job
Recommended by100%of homeowners
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FAQs for basement remodeling projects in Ontario, OR

Finishing a basement turns unused square footage into livable space and returns up to 70% of what you spend when you sell your home. Beyond that resale boost, you gain a playroom, home office, or guest suite you can start enjoying right away. That mix of daily comfort and solid return on investment (ROI) makes basement finishing one of the smartest upgrades you can tackle.

In some parts of the country—especially lots on swamps, high water tables, or other wetlands—local codes prohibit basements. Saturated soil puts constant pressure on foundation walls and lets water seep in faster than any sump pump can handle. 

If your property sits on waterlogged ground, building on a slab or crawl space is often safer, more affordable, and code-compliant.

Most basements wrap up in four to eight weeks. Framing takes three to five days, with electrical and plumbing rough-ins following over the next week. Add five days for drywall, two to three for flooring, and another week for paint, trim, and punch-list items. 

Delays can happen if materials run late or your contractor’s calendar is packed, so build in a little cushion when you plan.

Whether a finished basement counts toward your home’s official square footage depends on local rules. Many areas only include below-grade space if it has code-approved egress, fully finished walls, ceilings, and floors, plus consistent heating. 

Check with your local assessor or building department before you start; meeting those standards can affect taxes, appraisals, and resale value.

Building codes require a checklist: dedicated heat and electrical service, a code-approved stairway, and at least one egress window or exterior door. Walls, ceilings, and floors must be fully finished and meet insulation, ventilation, and fire-separation standards. If you add a bedroom, you’ll also need a closet, proper clearances, and safe exits. If you change the layout later, be ready to update the space so every new room still meets today’s code.

The Ontario, OR homeowners’ guide to basement remodelings

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