, FAR (floor area ratio which is the max SF for the lot), lot occupancy (how much area can the building take up on the lot), green area ratio or pervious surfaces (a lot of places now require soft scale or where water can collect and not drain to the storm drain), parking requirement per unit (can the parking be offset if near public transportation), affordable housing, any view corridors to preserve, is it a historical neighborhood, minimum size per unit, and any public enhancements required?

Do a routine inspection, check the plumbing under the sinks, check the drains for free flow, check for running toilets, check the base of the toilet for leaking flange seal, dripping faucets, change the furnace filter, inspect the attic for potential roof leaks, check the condensate pan under the HVAC, check the pan under the water heater.Common sources of smells are pets (especially cats), kids peeing somewhere other than the toilet, garbage/refuse not being properly disposed of, plumbing issues.

There were 2 courses of action recommended.OPTION 1:> 100% Line replacement and Water proof:> - To dig up both sides of house for gravel instal> - Water Proof both sides of home where water is intruding> -Replace storm drain lines needed on both sides of home> - cover and repitch top side to ensure proper flow away from home>> All Labor, Material, tax $13,255Option 2:> Repair Line, Jett, Repitch:>> -To dig 6ft of Stormdrain> - Repair Storm drain line where broken> -Jett lines to help clear buildup/ debris causing water to sit> -Cover and Repitch ground on driveway side of house>> All Labor, Material, Tax $2700I chose option 2, with the idea of potentially using internal membrane afterwards to thwart risk of any more water intrusion.

Even ‘flushable’ wipes do bad things to the drains.

There were 2 courses of action recommended.OPTION 1:> 100% Line replacement and Water proof:> - To dig up both sides of house for gravel instal> - Water Proof both sides of home where water is intruding> -Replace storm drain lines needed on both sides of home> - cover and repitch top side to ensure proper flow away from home>> All Labor, Material, tax $13,255Option 2:> Repair Line, Jett, Repitch:>> -To dig 6ft of Stormdrain> - Repair Storm drain line where broken> -Jett lines to help clear buildup/ debris causing water to sit> -Cover and Repitch ground on driveway side of house>> All Labor, Material, Tax $2700I chose option 2, with the idea of potentially using internal membrane afterwards to thwart risk of any more water intrusion.

But is it worth the risk buying if I have to drain my reserves?

On March 17, 2020, the tenants reported backed up kitchen drain.

@Michael Moussa mtce is maintenance-fix sink drain, capex is capital expenditure-fix downspout, roof etc. 5% for vacancy is great most of the time during this virus it is hard to know.

don't charge them full each day and don't drain them less than 20%.. 

Treated with professional grade products such as bait gel, growth inhibitor, bait stations, diatomacious earth, boric acid, raid, bleach in the drains, and more.