I purchased a newly built duplex in August of 2021 to house hack.

Therefore, I wonder if an earnest money deposit of $50k is normal for a newly built single family house? 

We are rapidly becoming experts in the nitty gritty details of construction.We also know who we are not: local market experts.

This implies residential units can be built at lower costs and provide better return. 11) adding an ADU to SFH can make the SFH fall under rent control.

If you rent your home in California, it seems likely, (although not guaranteed) that both your rents and the value of your property will increase more rapidly in comparison with a lower-income / lower cost-of-living state. 

This renovation took 2.5 weeks for two guysScope of WorkDemo and gut entire kitchen, gut one bedroom, and partial gut of bathroomBuild new closet and frame out a wall to create a bedroomInstall new laminate flooring in two bedroomsInstall new subpanel and new electrical for entire apartmentNew (and some reused) cabinetsNew quartz countertopNew (but bought used) 24" rangeNew microwave and fridge (new fridge not shown in photos)New toilet, medicine cabinet and vanity light in bathroom New built-in kitchen table and chairsCost of Work (approximately)Labor $6,500Cabinets $2,000 - I bought some nice, used Ikea cabinets from Craigslist for a previous job and I had some left over.

All brick, built in 1920.

Can't include furnace, hot water tank, central ac and some other built-in appliances - check your local ordinances.

@Gil Levy I recently completed rezoning a project from I-1 (Light Industrial) to C-1 (Community Business District) in Sylvan Hills and built 3 story Triplex.

I think the confidence to take action in a smart way is built on all of these things.