To begin, you need a dry basement. Otherwise the space can be an incubator for mold and mildew. Not only can that make your basement smell bad, it can also ruin whatever refinishing work you did and even cause wood rot or potentially serious illness from exposure to toxic molds. There are two types of moisture that can be present in a basement – water accumulating from the inside due to condensation, and water seeping in from outdoors.
Assumptions: The flooring in this calculator is carpet. For hardbood flooring or tile your cost will be higher. The costs estimated here are from finishing your basement using typical materials. If you want high end bathroom fixtures, flooring, etc add another 20% to the bottom line. This estimate includes adding one new full bathroom with rough-in plumbing in place.
Installing a bathroom in a basement costs more than installing a bathroom above ground. Costs can range from $2,500 to $5,000 on average, depending on the number of fixtures and whether the plumbing must be installed from scratch or if it’s roughed in already. Basement plumbing requires special considerations to ensure proper drainage and tie-in with the main sewer line, which may not be deep enough to allow the basement bathroom plumbing to use gravity the way above-ground plumbing does. Virgil Miranda’s Construction subcontracts all plumbing work. Miranda says that sometimes the toilet alone in a basement can cost up to $2,500 because sometimes homeowners need to invest in a toilet that does not use gravity but instead a macerating function to grind waste down to prevent clogging. Miranda estimates that each bathroom fixture in a basement costs $800–$900 on average, so a full, three-piece bath could cost $3,000 for the fixtures alone. Adding a kitchenette or wet bar sink adds more to overall refinishing costs. In addition, some basements require a French drain with one or more sump pumps, which can cost up to $10,000 on average, depending on how much ground the drain covers.
Finishing a basement can cost between $25–$50 per square foot on average, depending on how the basement is finished, whether any challenges come up or whether there are special circumstances with the project. For this reason, a 1,000-square-foot basement can cost up to $50,000 or more to finish. Virgil Miranda of Virgil Miranda’s Construction, a general contracting company based in New Bedford, Massachusetts, says it can be tricky to estimate remodeling jobs based on square footage alone, due to the variance in each job. Larger basements may have a lower cost per square foot than tiny remodel jobs.

diy home basement is the perfect place to store items that you do not need now but will need in the near future. You can devote a portion of your basement plan to a storage area in the basement. The storage area should be flexible because you will never know what you might want to keep there. The washer and dryer can be noisy appliances. You wouldn't want to disturb anyone who is asleep while you are doing a load of laundry. Keeping them in the basement is perfect because the basement door and floor will muffle out the noise that the washer and dryer make. Just handle the basement plumbing installation and designed piping properly to ensure a flow with your current plumbing system.

The ceiling of this Connecticut basement was very unattractive. Wire, pipes, and insulation were exposed to the room below. Connecticut Basement Systems recommends installing a drop ceiling when finishing basements. These allow easy access to shut off valves, wires, and pipes that lead to the rest of the home. The tiles of our drop ceilings are made of mineral wool, making them completely inorganic. Mold can only grow on organic material, so mold or mildew will never be an issue on our ceiling tiles. They will not sag from moisture in the middle, giving an eternal crisp, clean finish. Our tiles even come with a 30 year warranty against mold and sagging. After the installation of the new drop ceiling, the basement was much brighter and had a clean appearance. The stylish crown molding around the perimeter of the room gives a beautiful transition to where the wall meets the ceiling.
Maybe it’s just great extra space, a blank palette—there are so many awesome ways you can use the basement. A movie room, game room, family room or kitchenette can provide a special place for the family to bond and have fun. Man caves and/or woman caves have become trendy and there are plenty of modern basement cave ideas available to inspire your own private space.
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Accounting for variables such as square footage, materials, electrical and plumbing, the average basement remodel ranges from $11,034 and $29,226. Some cost as little as $5,000, with top of the line remodels costing over $40,000. The average cost to homeowners is $20,126. Expect to spend between $10 and $35 per square foot depending on the changes made.
If the hundreds of photos and stories submitted to this year's annual Search for America's Best Remodel Contest prove one thing, it's that you love flipping the idea of what a basement can be. With a little work, these once dark, desolate spaces can become bonus rooms for entertaining family and friends or getting some work done. Here, the editors of This Old House pick the best basement remodels.
Get estimates from several companies; request and check references. Understand exactly what is (and isn't) included in each estimate, and whether the contractor will do the paperwork for required building permits. Ask about the contractor's length and type of experience, especially if there's anything unusual about your project. Be sure a company is properly bonded and insured and licensed in your state[10] . See if there are any complaints with the Better Business Bureau[11] .
Support beams are common and necessary in most basements. Connecticut Basement Systems provides a bright, attractive, detailed column wrap to transform these unattractive poles into a sophisticated design choice-- SmartPost Column Wrap. Crown molding along the top and bottom makes these especially beautiful. They are made of durable, long-lasting materials, and have the ability to transform your basement into an attractive living space!
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