@Madhan S.
I would reach out to @Jonna Weber who is an agent and very active on BP and an REI club here in Boise.
From what I see the cap rates on nice four plex units are running 5% to 6% (assuming 40% to 50% expenses, which should include CAPEX accruals) and by nice I mean there would only be minor differed maintenance and those could probably be remedied before closing at the seller's expense. However, depending on how much one puts down the cash-on-cash return might be decent. The one I own is in a small seven building community. Our HOA is low, $158 per month and that covers, landscaping, watering, trash, and snow removal. I've seen where some of the larger communities can have HOAs that run $250 to $400 per month, especially if they have a club and a pool and an onsite management office, etc. Also, my community allows the owner to self-manage and some communities dictate the property management company. I know one large community where the majority-owner of the complex also owns the PM company, which I would not like because I feel they would be inclined to get their units rented first as vacancies come up.