How Often Should You Deep Clean a House?

Twice a year, if something is cleaning the house in between. Every three to four months if nothing is. That is the short answer, and the rest of this is why it moves.

What a deep clean actually is

A recurring clean maintains a steady state. A deep clean changes the state. The difference is not effort, it is reach: a deep clean goes to the places a maintenance visit skips on purpose because doing them every two weeks would be pointless.

That means inside the oven, behind and under appliances, inside cabinets, baseboards wiped rather than dusted, door frames, window tracks, light fixtures, vents, grout, and the tops of things nobody looks at. It is one long visit, and it costs $389 for most two bedroom, two bathroom homes.

The schedule that actually works

Twice a year, if you have recurring cleaning

Spring and fall. A house on a biweekly schedule never gets far from baseline, so the deep clean is catching the reach items rather than digging out. In New England the two obvious moments are after the heating season, when everything is coated in whatever the system has been pushing around since November, and before it starts again.

Every three to four months, if you do not

Without maintenance in between, grime has time to bond. Soap scum that would wipe off in April needs dwell time by August. Four deep cleans a year is more expensive than biweekly maintenance plus two deep cleans, which is the actual argument for recurring cleaning, and it is worth doing the arithmetic on your own house.

Sooner, in these cases

• Before you list a house. Photographs are unforgiving about window tracks and grout.
• After construction or a renovation. Drywall dust travels through a whole house and settles for weeks. This is its own job and it usually needs two passes.
• After illness in the house, when you want everything reset at once.
• Moving in or out. Different job again, and it needs an empty house. That one is $519.

What changes the answer

• Pets. Shedding animals compress the schedule more than anything else on this list.
• Being near the water. Salt air films windows faster within a mile of the coast, and fine beach sand gets into door tracks and stair treads and stays there. Houses in Rockport, Newburyport, and Hampton genuinely need sills and tracks more often than houses ten miles inland.
• Forced hot air. It moves dust around the house continuously. Radiators do not.
• Old houses. Deep box sashes, painted floors, and wide plank boards all hold grit in corners that a modern build does not have.
• How many people live there, which is more or less linear.

The jobs nobody does often enough

Not a guilt list, just the things that are genuinely out of sight.

• Range hood filter. It comes out and goes in the dishwasher. Quarterly.
• Bathroom exhaust fan cover. Twice a year.
• Dryer vent, not just the lint trap. Annually, and this one is a fire issue rather than a cleaning one.
• Refrigerator coils. Twice a year, and it lowers what the appliance costs to run.
• Dishwasher filter. Monthly, and it is the reason glasses come out cloudy.
• Under the beds. Whenever the sheets change, if you can.
• Window tracks. Seasonally, more if you are near sand.

How to decide for your house

Pick a room you do not think about. A guest bathroom, a spare bedroom. Run a finger along the top of the door frame and look at the window track. If either surprises you, you are due. If neither does, you can wait until the season turns.

If you want a number for your own house, the price tool gives you one in about thirty seconds, and the full list of what a deep clean covers is on the cleaning page.