We are new to Texas but have experience in buying, flipping, rehabs, some new builds.If it comes to construction, seems like we've done most of it. 

I am more than happy to share my preferred lenders that specialize in investment properties, home inspectors, contractors, landlord and builders risk insurance carriers, and CPA's that know to do cost allocation studies with my investor clients (that's how you know you have a CPA that knows real estate investing accounting).

My septic inspector regularly tells me there’s generally no septic police for these matters once the property is built.

Go to a construction site (production home builders--- Toll Brothers, Orleans, KHov) and find the carpet installer.

Hi,I have a permit to build a 720SF ADU in Oakland. Has anyone had a good experience building an ADU with a GC out here that they would recommend?Detached ADU behind SFH, on flat ground with excellent access, in Adam'...

Insurance probably sent an inspector who gave a ballpark repair cost in addition to the cost estimate the clean up company provided.I'm assuming you used the clean up mitigation company the insurance suggested, who may not be your best choice.Get another estimate to return the property to full glory, cost for paint, glue, dumpsters, every nitty gritty drywall screw, plus putting your tenant in like kind housing.

Maybe new construction from a builder who is willing to sell 5 houses under one closing?

my scenario was a little different I would buy 20 to 80 acre parcels in Oregon and WA.. then log them .. using the skids roads and log landings strategically ( put them were future driveways and house pads would go). then do short plats  4 lots or less.. then sell the lots on contract.. the logs generally paid for the land so we had no debt on the land .. most land buyers took a few years to get to the point they were ready for construction loans..

Will they allow that with a form of construction loan?

I've used them (not sure if I can name, but starts with an R and ends with an A) on about 6 or 7 of my deals so far and its true 100%, no money down financing.The only catch is that they cross collateralize against other properties you own - including your primary residence.But they close and are very thorough.Their appraiser and rehab inspectors are very good too.