Then I would speak with a land surveyor or civil engineer to get a sense of what it would take to obtain all the entitlements and bring in the utilities, etc.     

I checked all state basis only CA can sustain high growth in home price. 2024 would be fun. 

I talked to a modular home company in my area, and he said to build a 4 / 2.5 2200 square foot home would be 215k, and then foundation and utilities would be another 160k.

I also realized that I don't have to pay any utilities at all with single family homes.

As this approach uses very little documentation, it is the least reliable methodology in preparing a cost segregation study.To see all of the steps included within each method, refer to Chapter 3 of the IRS Cost Segregation Audit Techniques Guide.What methodology has your company utilized?

You could grow a portfolio but will it be sustainable?

And i found launch control but the minimum is $500 a month, but they use cross-referencing data across sources to find the most accurate contact information by using a person's name and address to find their phone number, real address and email by accessing public databases, phone number directories, credit reports, utility bils, public tax records, and social media profiles. this is waaay expensive for me as a beginner. what do you suggest or if anyone has any suggestion I'd greatly appreciate it.??

Does it have shared systems you have to manage or separate utilities for everyone? 

I use this for tax and insurance which all properties have)Expenses (general business like admin/legal and by unit for repairs, trash, utilities...)EBITDA (earnings before interest/taxes/depreciation/amortization.

Tenants may not occupy residence without utility service except during brief interruptions beyond your control.