Hi BP - My tenant just provided notice to terminate her lease on my condo in Seattle, WA. 

Some factors to take into account will be the overall condition of the property and current rental income in comparison to market rents (comps).Queens has many SFR with liveable basements so you may be able to find someone willing to househack and keep the current tenants but you'd be working with a very specific buyer pool and this could lead to less interest in the home, a lengthy selling process and a below-market selling price.With regards to giving notice to the tenants, assuming you're going to aim to close when their lease is up in April, I'd mention it 30-60 days before putting the property on the market.

I heard since it is month to month, I can increase the rent at any time by providing rent increase notice to the tenant.

I’ve noticed you’re a frequent poster!

Then notice is made by printing it in a publication of record.

With my price point of no more than $280k, I've noticed a few quads for sale for less than $300k with tenants already in place.

I noticed there are people in California recommended to buy duplex in Houston.

I don't really notice too much change in the Winter months, maybe a bit of slowing in the number that move out, but parsing through many years of data, I don't see any identifiable patterns of slowing rentals when it gets cold and blustery. 0Having said that, I have been seeing extremely strong rent up in the past 3 months.

As there is no lease, check your local laws and see how much notice you need to give. 

-- Have you ever received an eviction notice?