How to Remodel a Dark Basement

After photo of basement renovationImages: Michael W. Groman Consulting/David Očenáš Photography

How one homeowner turned a dark, unfinished basement into two cozy bedrooms (and a bath!).

Refinished basementsare a great way to add living space to a small home. But what do you do when it’s so dark, you can’t imagine actually spending time there?

You add light. 

Here’s how Mike Groman transformed his 1920s bungalow’s dank and musty basement into a light-fllled space.

What the Basement Looked Like Before

Basement stairway before renovationImage: David Očenáš Photography

Groman’s cinder-block basement, typical of 1920s construction in the area, extended throughout the full footprint of the house. It was musty from moisture seeping beneath the basement door and from gutter downspouts that were directed at the foundation. 

Musty basement before renovationImage: Michael W. Groman Consulting

Over time, so much water had entered the basement that the bottom of the staircase had rotted.

Rotted wood on stairs to basementImage: David Očenáš Photography

How He Added Light to the Basement

Groman had two goals: 

  1. Fix the wet basement problems
  2. Banish that middle-earth feel so he didn’t think he was sleeping underground. 

Excavating 18 inches down accomplished both goals. He also could install a footing drain system that directed water — ground and otherwise — to a new sump pump. The new depth effectively raised the ceiling from 7 1/2 feet to 9 feet (Groman is 6’ 2”, so he appreciated the extra headroom).

Excavation to deepen basementImage: David Očenáš Photography

Downstairs was also screaming for more light. Digging away foundation soil along the south side of the house allowed him to install windows big enough for code-compliant emergency egress.

Egress windows in newly remodeled basementImage: David Očenáš Photography

Plus, the new windows added plenty of light.

New basement window in bedroomImage: David Očenáš Photography

Being an environmentalist, Groman updated the house with eco-friendly, energy-saving heating and cooling systems.

  • Rinnai on-demand tankless hot water system
  • Buderus gas-fired heating system, which sends hot water to baseboard radiant heat panels throughout the house.
  • Unico high-velocity mini-split air-conditioning system that shoots cold air through 2-inch insulated tubes, a space-saver in smaller homes.

In case you’ve never seen a tankless hot water system, here’s Groman’s. It’s only 1-by-2-ft. and fits neatly on the wall.

New tankless water heater in basementImage: David Očenáš Photography

Here’s a picture of the baseboard radiators in a finished bedroom. They look like trim on the bottom of the wall.

Baseboard heatersImage: David Očenáš Photography

Groman added “half walls” throughout the perimeter of the downstairs to hide water, electric, and gas lines. I love half walls for all the uglies they cover and the design opportunities they provide; the top of the half wall makes a convenient shelf for artwork and knicknacks.

This is what’s behind the half wall.

Half wall in basementImage: David Očenáš Photography

And here’s what the space looks like finished. That half wall makes a great picture gallery.

Picture rail in basementImage: David Očenáš Photography

How He Fit a Small Bathroom Into the Basement

Groman wanted the bathroom remodel to look modern and uncluttered. And although he hadn’t planned on installing a tub — he thought the 70-sq.-ft. bathroom was too small — his friends convinced him that every house should have at least one tub, for little kids and big aches. 

The basement bathroom has a small shower, which you can see peeking out of the bottom left corner in the picture below.

Bathroom shower in basementImage: David Očenáš Photography

Groman repurposed one of the house’s original exterior doors for the bathroom. He sanded and painted it, and covered its windows with window film, which lets in light and protects privacy. 

Barn door in basement renovationImage: David Očenáš Photography

Other Custom Touches

  • Floating (not glued down) cork flooring throughout the lower level — a better choice than carpet, which can harbor bacteria in underground spaces. Cork is sustainable and waterproof.
  • Chestnut tongue-and-groove wood on staircase landing, left over from another project.
  • Under-stairs storage.
  • Reusing demolished basement concrete as the base of the backyard rain garden — instead of sending it to a landfill.

How Much the Basement Remodel Cost

  • Excavation of basement: $6,400
  • Install drainage system: $1,000
  • Tankless water heater, installed: $3,000
  • Heating system with radiant panels: $6,000
  • High velocity air conditioning system: $7,000
  • Cork flooring, installed: $2,640
  • Barn door hardware: $360

TOTAL: $26,400

Related:Ideas and Tips for a Basement Ceiling