Multiple times if necessary to keep lot and sidewalks clear.

I bought a property once that had an unrecorded Municipal Sidewalk Lien. 

takes time to sell 7 lotsYou may have zoning issues - may need curbs/sidewalk/guttersWith that many lots that close together is the main property your rehabing going to be an asset or a limitation to who or what is built near it Could re zone and split it and list it and let new buyer either buy house by itself and multiples of lots and give them a price break on lots

Short sale to an investor who can generate a nice ROI before it's done in 26 years4. 4-5 other investors who want to share the unit and these expenses for the next 26 years.Expenses:Mortgage: $1600HOA: $450 per mo- includes exterior landscaping and lighting, maintenance for 3 pools/spas, tennis courts, security gates, private streets, sidewalks)Land Lease: $170 per moThe HOA (Waverly Park) recently passed a ruling for no vacation rentals under 30 days, however, my attorney suggests that should only apply to new owners and not me as that was not the rule when I purchased.

Each city has their own criteria as to setbacks required for various things (landscaping, sidewalks, driveways, lot coverage, etc.)  

New roofs have been done, sidewalks, landscaping, etc. with more improvements to come.  

I get a notice for a couple of small weeds barely visible up close, yet my neighbors can place basketball hoops in the middle of the street (not allowed), window AC units (not allowed) cars parked on sidewalks and in once case a lawn for a month (def. not allowed), etc.

For example if investor A has 5 duplexes and investor B has 10 and they both have the same amount of money to spend on those units, that's 5 more roofs that need to be replaced, 5 more property taxes to be paid, 5 more sidewalks that crack and need to be replaced, 10 more water heaters to upgrade, 10 more furnaces that eventually go bad, 5 more yards to mow and do snow removal on, 5 more PM's if that's your thing, you get the point. 

The only similar experience I have is running a transit level and grade stick on building foundations and sidewalks. 

One of the buildings had some severe cracks between the sidewalk and the foundation wall.