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Basement Finishing Cost Estimates


Add a 3/4 Basement Bathroom

Adding a bathroom to your new basement is a great way to add value to your home and give your family more options. At Custom Built we can add a bathroom to your existing finished basement, or you can add it to your basement finishing project. 

Entry-level basement bathrooms will come with fiberglass tub + shower, toilet, sink, facet, vanity, LVT flooring, plumbing, electrical and lighting fixtures.   

Starting at $25,000


Add a Basement Wet-Bar

Starting at $25,000


Additional Details on Basement Finishing Cost Estimates

Basement finishing cost estimates assume open layout. The more walls and upgraded trim details, the higher the price per sqft goes up. Please note that even though the size of a basement may be smaller than 1000 sqft and the cost may be less, the price per square foot may increase.

¾ Bath is based on a 5′ x 8′, which includes a vanity, toilet, and shower. Whether the drains are pre-roughed & the level of cabinetry, countertops, fixtures and tile will indicate the final price.

Wet Bars are very hard to estimate until a final design is established. An Entry-Level Beverage Center consists of 7’-8’ of cabinetry and countertops. A Mid-Level Wet Bar includes the same as the basic-level except it adds an island or peninsula section for bar stools. A Luxury-Level wet bar is a more customized space for parties including multiple appliances and high-end finishes.

INCLUDED IN BASEMENT FINISHING COST ESTIMATE:  Space planning and layout design with our designer, a dedicated project manager, and all labor & materials. access to our customer portal where you can monitor progress and design selections via your phone and computer.

NOT INCLUDED IN BASEMENT FINISHING COST ESTIMATE: Demo, adding egress windows, upstairs smoke detectors (code requirement), or permit fees. Caution: Flooring upgrades such as hardwood, tile, & luxury vinyl tile (LVT) can accelerate the cost significantly. Please note that, Pricing estimates do not include new appliances, permit fees or additional smoke detector systems that might be required for inspection approval.

Financing Options:


Custom Built Design & Remodeling is the best basement finishing contractor in the Lansing MI region.  We have finished, renovated and remodeled dozens of basements over the past 15 years for our clients all across Mid-Michigan.  You can count on our team of professionals to get your basement remodeling project done right, on-time and on budget. 

Below you will find basement finishing cost estimates based on projects we have completed in the past. They are merely estimates, so please know that pricing varies based on the uniqueness and complexity of each individual project.

Design, labor, materials, flooring, countertops and fixtures are included in the estimates below. Please note that, Pricing estimates do not include new appliances, permit fees or additional smoke detector systems that might be required for inspection approval.

Basement finishing cost estimates below; the “Entry“, “Mid” & “Luxury” levels, distinguish which level you go with based on your budget.

If you have any questions about your basement finishing or remodeling needs contact us. We would be happy to answer any of your questions. 

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