I guess it's just too many factors to consider and it easy to get overwhelmed and cannot get accurate info and estimation when I conduct analysis (ex. property tax rate, insurance, maintenance fee, rent, repair, closing cost, etc.) 

And you need to keep detailed records of all repairs and improvements.

Nothing to get crazy about but no need to deal with tenants, property taxes, repairs, vacancies, etc. just sit back and collect.

If you can rent 3 units for $2,000 you are close to breakeven.On the plus side, you will have a highly attractive asset and several decades without much cost of capex and repairs. 

Various repair issues, bad tenant, and now this issue.

Zoning says that it is a repair service shop, excluding automobiles, any idea if leasing out storage space would be permitted?

Hard Money will usually finance 90% of your purchase price and 100% of your repair cost up to 70 or 75% ARV (after repair value).

Quote from @Alecia Loveless: @Natalia Perlova Absolutly no to the Sunday repair.

Rough calculations on what I need to be looking for:90k deal (purchase and renovations to get max rent)20% down = 18k from me80% bank loan at 8%, 20 yr amortization = 72k-------------------------------------------------- Here's my DSCR calculation:Calculate Net Operating Income (NOI):Monthly rent: $125040% expense ratio (taxes, insurance, repairs, vacancy) = $480NOI: $1250 - $500 = $750Calculate Monthly Mortgage Payment:Loan Amount: $75,000Interest Rate: 8% per year (0.08/12 = 0.006667 monthly)Loan Term: 20 years (20 * 12 = 240 months)Monthly Payment ≈ $627.83Calculate DSCR:DSCR = NOI / Monthly Mortgage PaymentDSCR = $750 / $627.83DSCR ≈ 1.20Therefore, with a $75,000 mortgage at 8% interest over 20 years, the DSCR is approximately 1.20

Let’s break it down with the 70% rule to see if it’s investor-friendly:ARV: $190,000 (taking the middle of $180K-$200K)70% of ARV: $190,000 * 0.7 = $133,000Minus Estimated Repairs:Roof: $20,000AC: $4,000Additional repairs (general estimate for a property needing updates, say flooring, paint, minor plumbing): $10,000-$15,000Total Repairs: approx. $35,000Max Buy Price for Investor: $133,000 - $35,000 - $10,000 (wholesale fee) = $88,000Since you’re getting it for $91,000, you’re close, but to make it irresistible, consider negotiating the purchase price down a bit further.