Quote from @Gary Monroe: Given your property's appreciation and potential rental income, it's understandable you're torn between selling or renting.

Simple, ALL IN, divided by NET income.

A little bit about myself: Day-time, I do project management for corporate real estate clients, and a registered architect.

Typing out EVERY SINGLE income and expense in my life, personal or business.

I am looking forward to connecting and learning from those who are more experienced in doing passive income. 

Doing all 3 scenarios here would cost about 1M$ to 1.2M.The numbers are:- Purchase price: 1.5M$- Current mortgage: 65% LTV, 2.55% 30y fixed- Property taxes: estimate 25k$/y- Current rental income from two 1bed/1bath units: 2200$/m each- Previous rental income from the 2bed/1bath house: 3600$/m- Property mgmt: 12%- Quote for garage ADU conversion: 500k- Quote for remodel: 400k- Quote for JADU: 300k- Estimated rental income from ADU conversion: 3500-4000$/m.- Estimated rental income from remodeled house: 5000-5500$/m.- Estimated rental income from JADU: 2500$/m.Concerns we have:- There's no comp in the area that sells for more than 2.5M for a setup like this.

Because one of the best things about investing in real estate is the tax benefits. when you invest with your SDIRA, you do not get to take advantage of those benefits. but with notes, where income is interest income and typically taxed at ordinary income rates - that is huge if you can defer or not pay taxes on that income.

Also, I won't profit right now from rental income - only my IRA will profit (yes I know it's me later in life), but I want more capital now so I can pay down my private student loan faster and repeat the process with other properties.The place is 1 mile from the beach, 2 minutes to the bus stop, 1 mile to the train, and less than 1/2 mile to a new mixed use development that will open this spring (just the 1st phase) and it's a 20 - 30 yr mixed use project. 

Looking at around 500K for purchase and rehab but the income potential is amazing!

I would suggest that you rent the property and consider using a property manager who can finance the improvements for you up front and be repaid out of the rent so you can have passive rental income over the long run.