What you are asking is how can I get around not doing correct due diligence on the property and the answer is you can't and should not because that isn't fair to the rest of the development who bought there understanding the rules.

I am considering buying an investment property in cash in a very nice development. 

Appraisal for post renovation is 5.5 million.1 million equity for one deal and around 9,000 per month in cash flow once stabilized is life changing to me, along with the cost segregation.You can make money in real estate in so many ways, whether you're @Jay Hinrichs funding deals and developing, or @Brian Burke syndicating, or wholesaling, buying single family homes, fixing and flipping, short term rentals, etc.The key is to pick you vehicle and master it.I would be remiss to say that I believe multifamily is the holy grail of real estate investing.

The macroeconomics here is rapidly growing - lots of population growth and job growth especially with the many companies moving and developing out here like Intel, Honda, Amazon, Google, Meta, etc.

Copper lines usually go bad from acidic water which lets the copper develop pinholes; occasionally you'll have solder joint failure.

I have a rental in a new rural development that does not have city garbage pickup.

Develop an offer strategy, work with a real estate agent, and include contingencies.

Requiring xyz% of new housing to be affordable....find me the studies that indicate this will actually lead to housing affordability....eliminating the 10 year tax abatement that unlocked revenues that are 10x what the city of Philadelphia would've collected on many parcels that would never have been developed if not for the 10 year tax abatement etc.....

When it is a new development, it isn't uncommon to see someone use the date the Certificate of Occupancy was issued - perhaps that marks the "ready", but it still might not be "available".So you can certainly have a property in service in a given year, but not actually have any rental income - but certainly your facts and circumstances are much better if you can actually get a tenant in there, that (should) shore up your defense on that question ever coming up unless you are playing weird games just to get a given in service date for tax purposes.

You can learn to do some things yourself...but make sure you have someone who has experience, who you can trust, in either your geographic area or the skill set, that you need to develop, to give their opinion.