Accuracy is important so the detailed engineering from actual cost records and detailed engineering using cost estimation methods are the preferred approaches. 

I'm a Software Engineer in the bay area ready to dive into the world of real estate investing.

If both properties are around 250k  what are the typical cost for the segregation studies.Please suggest reliable cost segregation engineers that service East Texas. 

I work full-time as a software engineer in the defense industry.

For example, I've seen where a hobbyist investor/developer works on project, they hire an engineer and/or architect, but they ended up missing something vital, i.e. drainage issues, environmental, fire dept review, planning the wrong type of product for that market (buyer & renter demographic), etc.

Well because you can't count sheer dumb luck single deals as "free information helped me". ) then the effectiveness of "free information on YouTube is:(500,000/17,000,000)*100 = 3%Now let me give you some perspective.In the world of mechanical engineering.. let's say electric AC motors, efficiency numbers are around 95%.

I'd just hit up your favorite search engine and see what ya get.....that usually will give you a pretty good clue.

I'm a former internet marketer and software engineer.

Checking with the engineering/public works department to see if they would allow for a dirt or gravel driveway in lieu of a full blown paved private road as it's cost prohibitive to build the full road right now. 3.

definitely want to speak to an engineer and architect