Easier said than done, but at least now you're competing in the marketplace.OK, so there's a lot more to it than what fits in this tiny post.

There is new construction popping up all over the downtown area in every tiny crevice possible.

At the end of 2021 we sold the condo we purchased in 2017 (put less than $40k down initially) to do a tax deferred 1031 exchange and purchased a ugly/tiny 4plex in Golden Hill but I was selling 1 unit to buy 4 in a better area so I was happy.....in 2022 we purchased a 4plex with low money down, also in east county using a small bank that did this type of loan at the time....So between 2021 to 2022 we purchased most of our units (11 units) with little money out of pocket since 2 of them were from cash out refi funds and 1 was from a 1031 exchange. 

Since you said tiny homes, this is probably not an option.  

I would focus less on quantity and more on quality.

Got into my first house purchase in 2010, got involved with AirBnB since 2012, learned and built a Tiny House, been enjoying learning and renovating parts of my initial property purchase and involved in taking care of others properties (cleanings, airbnb/rentals, and maintenance).

If 32% of all purchases are bought for cash (assuming no HML is involved), then we either have a huge influx of foreign  cash, or the inventory is so microscopically tiny that 1% or less of Americans buy almost third of existing inventory.

Quality, Quantity, and Frequency.

All very nice, but you still have a tiny kitchen and for a lot of buyers the house will need a paint job before they can move in.

From a realtor/buyer perspective, there's nothing worse than going to see a 3 bedroom house and finding the 3rd bedroom to be something too tiny to use, blatantly non-conforming**, or impractical.