I may have missed a few things in my list but I believe I stayed under $6000 total cost.The break down was the following:Drywall and Studs: $500Bathtub:   $150Tile: $300 (450 sq/ft at approx. 67 cents per sq/ftThinset&Grout:  $100Closet doors: $150Wood Door 36 x 80: $170tub surround Porcelain tile:  $160Plumbing supplies: $300Sliding mirror tracks $20Mirror $20Vanity: ExistingToilet: ExistingAll wood cabinetry: $950 (I get 60% off at my supplier)Sink: $95Faucet: $85Backsplash linear tile: $100Fridge: $400 at Sears OutletMicrowave $140 at Sears Outlet110 V single cooktop $80Miscellaneous parts/screws etc. $200Paint & paint supplies $150Granite $156 Labor to mud and finish drywall $1200 (only part of home improvement that I don't do myself is drywall finishing and stucco as also major concrete work)Now, I added a Fireplace TV Console which I bought on sale at Walmart online for $208 including tax.I have not decided if I rent it out or not or if I just use it for guests..

I am looking for a good concrete contractor to tear out and replace a 3-4 foot wide sidewalk running along the house.

Without knowing your market average rents for that type of space are $15 - $18 a foot so 5000x$15 = $75k a year- expenses of  $20k NOI $55k CAP rate for a property like this is usually 8% so value would be $55k/8%= $687,500 10 CAP would be $550k These are rough numbers based on averages I see in most markets.

You always want to put your best foot forward.Plan AheadAt this stage, your email campaign has done its job and you are now preparing for that next meeting.

With that being said looking only at ROI is a linear approach blinded by analytics. 

If the add isn't relatively accurate you could also be shooting yourself in the foot by not getting an accurate response (one way or the other).

You still need to excavate footings and frost walls.

If your borrowing for an owner occupant down payment, which isn't a lot of money, then you dont have the financial footing to invest.

You need about 2x that size to begin considering a condo (the building foot print on a small lot is too inefficient - stairs, hallways and parking mean for too few units to pay for construction, the land and make money).

I'm not familiar with your market specifically, but I do know LA is pretty inflated so I'm not sure that you can find a great option but it's a fantastic way to get your foot in the door with investing, gain experience as a landlord, build equity and possibly save some money with less risk.