How did we add a surprising amount of usable space to our house—going from 1,300 to 1,550 finished square feet in just 48 hours? No overnight addition, no major renovation. We simply installed a permanent heat source in our sunroom, and that change made the room count as livable square footage.
A realtor friend pointed out something many sellers don’t realize: in our area of Richmond, a room only needs a permanent heat source to qualify as “finished” square footage. It doesn’t have to be connected to central air conditioning—just a reliable source of heat is enough. That meant our large sunroom, which had been considered a three-season space, was being excluded from the official total simply because it lacked permanent heating.
Once we knew that, the fix was straightforward. We called a few electricians for estimates to hardwire and install a six-foot electric baseboard heater. The heater would be powerful enough to keep the room comfortable on cool days as long as the sliding doors and windows stayed closed. The installers gave a winning bid of $250, and the work was completed within two days.
The installation required more than a surface mount. The electricians had to drill through the sunroom’s concrete floor and run wiring through the basement and crawl space back to the breaker box, so we were glad to leave the job to professionals rather than attempting a DIY electrical project while the house was on the market.
Beyond the practical comfort of being able to use the sunroom year-round, the most immediate benefit was updating our listing. Increasing our finished square footage from 1,300 to 1,550 makes a real difference for buyers searching by size. That 1,500-square-foot threshold matters to many house hunters and affects how attractive our listing looks compared with others. Changing the flyer was a small step with an outsized impact on perceived value, improving our price-per-square-foot metric and reaching more potential buyers who had filtered out smaller homes.
We also like the way the heater looks—neat and unobtrusive at the base of the brick wall. The simple dial with low, medium, and high settings is easy to use and gives us control over the room’s temperature whenever we want to enjoy that space.
We considered a one-room heat pump, but those estimates ran between $2,000 and $3,000. Our realtor recommended the baseboard heater as a simple, cost-effective solution that meets the common requirement for finished square footage. For roughly a dollar per additional square foot, we gained 250 usable feet with minimal expense and disruption.
Have you ever finished an almost-finished room to sell or simply to enjoy it more? We’re a bit surprised it took us so long to complete what we now call “Project Baseboard.” The sunroom is one of our favorite rooms, and it’s rewarding to finally use it through the colder months—we only wish we’d done it sooner.
Note: If you plan to add a permanent heat source to qualify a room as finished square footage, consider getting an impartial appraisal so the updated area is verified and recorded. You may also need to notify your county or local assessor about increased finished square footage, which could affect property taxes. Different jurisdictions have different rules, so check local regulations and confirm any required permits or filings before you proceed.