Investing in the market that you have knowledge of and the economic factors that support it is necessary. 

Also your permitting process, type or land, grade of land, if underpinning is required will all play a factor into your cost. 

Experienced managers can help evaluate potential investments by providing insights on rental demand, market rents, tenant preferences, and location-specific factors that affect leasing success.For example, rental properties need to be close to conveniences like major roads, shopping, and schools.

The main factor is will rents cover the debt liability and can you sustain 3-4 months of no income to cover the debt? 

Ah yeah, they allow couch surfing style stays since that has been a thing there forever.

In evaluating seller financed notes, there is always a balance between redeeming and non-redeeming factors. 

., the 2006 or 2009 IECC — International Energy Conservation Code).Cost Considerations for a 90-unit or 112-unit Project:The actual cost of qualifying for the 45L tax credit depends on various factors, including:Energy Efficiency Compliance: The primary cost will come from ensuring that each unit meets the required energy efficiency standards, which typically involve energy modeling, certification from third-party energy raters, and potentially upgrading insulation, HVAC systems, windows, and other components of the building to meet the necessary performance levels.Energy Modeling: Typically, you'll need to pay for an energy consultant or engineer to model the building's energy performance and ensure it qualifies for the credit.

I understand there are some other factors I glossed over like gaining the approval of the first seller to switch collateral and the lien in second position, gaining approval of the second seller to put a second position lien below the big loan, and scheduling the sale of the first property to coincide with the purchase of the second property.

Definitely worth factoring into your strategy, though

I've included an example below to help illustrate this.So different lenders have different rates (which do vary even for DSCR loans) but these are factors they all consider.See example below:DSCR < 1Principal + Interest = $1,700Taxes = $350, Insurance = $100, Association Dues = $50Total PITIA = $2200Rent = $2000DSCR = Rent/PITIA = 2000/2200 = 0.91Since the DSCR is 0.91, we know the expenses are greater than the income of the property.DSCR >1Principal + Interest = $1,500Taxes = $250, Insurance = $100, Association Dues = $25Total PITIA = $1875 Rent = $2300DSCR = Rent/PITIA = 2300/1875 = 1.23If a purchase, you also generally need reserves / savings to show you have 3-6 month payments of PITIA (principal / interest (mortgage payment), property taxes and insurance and HOA (if applicable).