Accessory dwelling units, finished basement apartments, and detached guest houses are common across Arlington and Northern Virginia. They might be used for family, renters, or guests. These spaces have different cleaning needs than the main home.
Why These Spaces Need Different Attention
An ADU or basement apartment is its own space with a kitchen, bathroom, and sometimes a washer and dryer. But it usually gets less light, less fresh air, and fewer people walking through it. That means dust can build up, there is more moisture, and dirt might be different than upstairs. A detached guest house has the opposite problem. It sits empty for a while, so dust and stale air build up between visits instead of from daily use.
Basement Apartments and Humidity
Spaces below ground in this area tend to have more moisture than upper floors, especially in summer. That moisture affects cleaning in a few ways. Bathroom surfaces can get moldy faster. Closets and storage areas need more attention. Stale smells can get into carpet or fabric if the space is not aired out often. If your basement apartment has a dehumidifier, running it all the time helps a lot. It slows how fast grime and smell build up between cleanings.
What Gets Overlooked in a Below-Grade Unit
- Window wells and small basement windows: These collect dust and cobwebs quickly. Window cleaning is an add-on, so ask if you want it.
- Egress stairwells: Often treated as “outside the unit” even though they are used daily. Tell us if they should be included.
- Dehumidifier trays and vents: These are yours to empty and rinse, since odor builds up if they sit.
- Under-stair storage: Common in basement layouts and easy to forget entirely.
For a broader look at these often-missed areas, our guide to basement and garage cleaning lists spaces that tend to get skipped in a routine clean.
Guest Houses: Cleaning Around Infrequent Use
A detached guest house or in-law suite is used once in a while. It has a different cleaning problem than a space used every day. Dust builds up evenly because nothing is used or moved. Before guests come, air out the space and put on clean sheets yourself. Changing sheets is not part of a standard cleaning visit. If you have guests once in a while, book a cleaning a day or two before they come. That works better than trying to keep it clean on your own.
Shared Systems, Separate Spaces
Many ADUs and basement apartments share HVAC or water heater systems with the main house, but they work as separate spaces. When you book a cleaning for one of these spaces, tell us first what we’re cleaning. Do we clean just the extra space, just the main house, or both? Price and time depend on the layout. When you book, make sure we know if the space is separate or bundled with the main house cleaning.
Access Considerations
Detached and below-grade units often have their own doors. That’s good for privacy but means you need to share how to get in. If the space has a lockbox, outside stairs, or a tenant who needs advance notice, tell us when you book. That way we don’t wait at the wrong door.
The Bottom Line
ADUs, basement apartments, and guest houses are not just smaller copies of the main house. They have different moisture levels and different ways people use them. Our standard cleaning service can be booked for an extra space on its own, starting at $135+ for a studio. Tell us the layout and how the space is used, and we will give you a price.