I know for a fact using DSCR loans you can do a cash-out refinance with as little as three months seasoning. To echo a point made above, an optimal LTV structure for a lender for short-seasoned cash-outs is as follows:
3-6 Months: 70% LTV
6+ Months: 75% LTV
What's also important to note is that because you don't have a year of STR history to qualify the loan, assuming you go the DSCR route, you'll also want to go with a lender that can underwrite with Air DNA projections, even on a short-seasoned cash-out!
Most lenders allowing STR cash-out refinances have a breakdown as follows.
3-5 months: 70% LTV on cashout refinances
6+ months: 75% LTV on cashout refinances
Please note that 75% LTV loans are priced differently than 70% LTV due to the additional leverage and, in the long run, might be more expensive than beneficial.
If it is non-government loan (Freddie, Sally, FHA, etc.), then you can do whatever the bank will agree to. There are no uniform "rules" across banks for lending. If you have a good banking relationship, you might be surprised at what they will agree to.
If you want the new refinance loan/LTV to be based off the new appraised value, generally need to see 6 months of ownership seasoning, but can also get exceptions that will allow 90 days of seasoning. If you're refinancing before those time periods, the LTV would generally be off the purchase price + the documented improvements. For an single family, the max LTV would be 75% for a cash out and 80% LTV for a rate & term refinance.
Every lender will have different requirements. From my experience its most are 6 months. However as mentioned above I would recommend waiting if you can as rates will likely drop next year and that could also send values up which will let you get more money, for less.
I know for a fact using DSCR loans you can do a cash-out refinance with as little as three months seasoning. To echo a point made above, an optimal LTV structure for a lender for short-seasoned cash-outs is as follows:
3-6 Months: 70% LTV
6+ Months: 75% LTV
What's also important to note is that because you don't have a year of STR history to qualify the loan, assuming you go the DSCR route, you'll also want to go with a lender that can underwrite with Air DNA projections, even on a short-seasoned cash-out!
You generally do not have to wait a year to refi on a DSCR loan for short-term rentals. The only time this could take effect is if the lender has a look-back period. There are a few lenders that do not have a look-back period on STRs and they are able to use the market short-term rent or AirDNA estimates.