Property upgrade can increase the value of your house by almost £40k – and it’s simple

Another expensive task is painting. Hiring painters can get pricey, so if you’re able, paint it yourself. Lighter colours can help offset the lack of natural light. 

Because of the lack of windows, basements can get a musty smell. Eliminate that with an air purifier, which will help with smell and increase general air quality. 

Another important decision is the ceiling. The cheapest option is to paint, but other options include sheetrock and ceiling tiles.