In an audit, is a 'DIY' software or a full engineering-based study considered mandatory?

Pre-Application Meetings (1–2 months) Meet with planning staff, engineers, and other departments (fire, utilities, stormwater).  

You can buy thease porperties for 90% off from the countys.I typically get 2 to 3 houses that turn into tax deeds and then I turn them into rentals.I have done very well over the years and I no longer work as an Electrical Engineer and my wife quit her job as a manager at a local hospotal because the rental inco.e.from tax lien sales has dwarfed out w2 job income.I also own a good many of these houses in a Self-directed ROTH IRA which makes all the rental income from these houses tax free for forever. 

They are really accommodating for investors and one of the owners (brothers) does the engineering report himself. (972) 740-2235

This "free land" development is the primary engine behind the project’s projected 90.5% Return on Equity (ROE) and 31.8% Net IRR.

I entered Andover as the water/sewer laterals approached max capacity and after talking with engineers noting it will be minimum 7yrs to expand that capacity and that's if political process started that day.

Soft Costs: ~$340,000 (~13%)Architecture & Engineering: ~$65,000Civil / Survey / Geo / Testing: ~$58,000Permits & SDCs: ~$162,000Professional Fees / Legal: ~$12,500Insurance (Builders Risk, etc.): ~$12,600Development Fee: $50,000Soft Cost Contingency: $15,0003.

Since it's a new detached structure placed in service in 2025, you treat it like a newly acquired rental asset — the 2022 purchase price and overall property basis are irrelevant for this depreciation calculation.On the cost seg question: at $120K construction cost, the math on a full engineering-based study might be tight depending on what's inside.

When I was looking, I spoke with four different firms and paid close attention to how they explained their engineering process and audit support. 

Now, though, I have 25 years of data engineering and working with software engineering teams behind me, and these last 4 years I fiddled with modern open-source software like PostgreSQL for db, D3.js for interactive maps and analytics, CSS and SASS for elegance.