However, I'd probably want to add a shower to the basement bathroom as well as a small kitchenette (sink and minifridge, couple cabinets) and additional bedroom down there. 

Cabinets - Wood, composite, or ? 

Single Story 3 bed 2 bath 1585 sqftPaint Interior - 1585 sq ft - $1.9/sq ft = $3,000Scrape popcorn ceiling, texture, and paint - 1350 sq ft - $3.1/sq ft = $4,185Remove old carpet and install vinyl plank flooring - 1175 sqft - $5/sqft = $5,875Replace carpet with new carpet - 410 sq ft - $2.2/sqft = $910Remove dead grass and install sod - 1850 sqft - $2.1/sq ft = $3,850New two car garage door/opener/track and installation = $1,500New window and installation = $250 eachBathroom remodel - vanity, mirror, light, toilet, demo and build back new tub or shower with ceramic tile - $4,500Kitchen remodel - 30sqft quartz, 12ft upper cabinets, 12ft lower, backsplash, sink/garbage disposal, $9kThere are many more items to be repaired/replaced but I realize this is turning into a long post so I will stop there.

(House was in Highland Park, Los Angeles)Purchase price: $600kRehab: $94k - Full rehab: new layer of shingles on roof, 13 new windows, all new doors, new laminate floors, new 3' front retaining wall, full gut kitchen (new cabinets, quartz countertops, tile backsplash), 2 full gut bathrooms (new tub, floor tiles, wall tiles, vanities, faucets, toilets, vanity lights), converted one closet into a washer/dryer closet, created a master ensuite with a hallway bath, opened up some walls, recessed lights throughout, scraped popcorn ceiling, installed new HVAC, interior paint, exterior paint, stucco repair, new landscaping front and rear of house, new wrap around deck, installed double french doors master bedroom and garage, to new tankless water heater, new exterior lights, updated light plumbing and electrical, new garage door with motor, and some other normal repairs like replacing drywall, floor boards, and replacing some wood trims like facia boards.    

Early on I used the Lowe's preferred contractor for installing stock cabinets in two units at a quad.

I put roughly 35k into the property (including the 8k from obama) from 09-11. 1 bathroom remodel and 1 full bath install in the basement, 2 kitchens original kitchen painted the cabinets, new appliances and counters, beadboard backsplash, basement kitchen used cabinets painted, paint, landscaping, some trim and new floors in one of the bedrooms, ripped out some carpet while living there with roommates.

Also Looking for referrals for someone to put in Vinyl plank flooring, kitchen cabinets and counter-tops.

And if you go direct to the TK company you can potentially save some because they don't have a marketing fee they need to pay.Ask for Scope of work one of my clients that I fund acquisitions for takes EACH and every property to the studs.. and his TK product has all new. plumbing , electrical , hvac, windows, Kitchen is torn out and a brand new kitchen is put in with new cabinets and Slab granite with under mount sinks designer tile work...

New flooring and cabinets in 2009Purchase price: $194,000Down payment: $40,00030 year mortgage at 5% - 20% downIncomeRental income: $25,920ExpensesProperty taxes: $1,000 annuallyInsurance: $1,000 annually (guess)Property management: (6% of rent) $1,560 annuallyMaintenance/repairs: (6% or rent) $1,560 annuallyUtilities: $2,100 annually (water/trash)Mortgage: $12,348 annually Total Expenses: $19,568 Net Income: $6,352Cash flow: $530 monthlyAlso should I use my heloc or cash for the down payment?

New appliances, cabinets, bathrooms, etc.So of course, the first thought in our mind is to rent it out as a duplex.