Focus on optimizing the current fourplexes (improving rents, reducing expenses).

Freddie has similar intricacies, but also does not require a two year history of receipt; https://guide.freddiemac.com/app/guide/section/5306.4If you can use the rental income to drive the DTI down so that you can reduce the down payment similar to that of the FHA product, the benefits of the conventional option will outweigh the FHA option, as I'm assuming you have a strong FICO based on rate quoted with no points.  

Private funding from a relative may provide flexible terms and reduced financial risk, but formal agreements are necessary, and interest paid is deductible for you but taxable for them.Traditional investment property loans offer stability and tax benefits like deductible interest and property taxes but require larger down payments.

Organizational Delays: Section 8 offices are often overworked and understaffed, leading to slow processing times for new tenants, delayed rent increase approvals, and poor responsiveness.Benefits of Section 8:1.Long-Term Tenants: When you get a good tenant, they usually stay for a long time because of the tedious process required to qualify for Section 8 housing.2.Consistent Income: If Section 8 covers most or all of the rent, you typically receive reliable monthly payments, reducing the risk of non-payment (as long as there isn’t a large tenant portion).3.Lower Barrier to Entry: Because properties in these areas are often more affordable, it’s a good way for new investors to break into real estate without needing a large amount of capital.Overall, I’ve seen the good and the bad of this strategy.

If you pay two years' worth of property taxes in 2025 (January and December), both payments are deductible on your 2025 return, potentially reducing your taxable rental income significantly.

Ok, if it's still sounding do-able, the next issue is that section 179 can't be used to create a business loss, so it would only reduce your taxes for the year if your rentals are operating as a taxable gain (but rentals are often at a tax loss thanks to depreciation).  

If I don’t hear from you in the next 10 minutes, I will assume you aren’t attending and I will move on to my next appointment.Using this system as dramatically reduced any wasted time I used to endure as part of the showing process as well as giving me data about their timeliness/responsiveness/respect for others' time.I often schedule several viewings at a time, 15 minutes apart. 

If your objective is to reduce your own tax burden, you are in essence confirming they have no valid AP claim.

It’s still a worthy strategy to force cash flow that’s rare to find in SoCal, especially if you can reduce the cost of construction by doing a conversion/using an ADU grant or even buying a property with an existing ADU In general, even if the ADU valuation matches your cost including grants, they are usually not worth it in southern CA in single family zones. 

They realize the due on sale clause could get exercised and believe the risk is justified by the reduced rate.