Multiply adjusted comp values by the given weight and add up the prices. 

I know a general rule of thumb in $5/SF for light, $10-15/SF for medium, $25/SF for heavy, but I'm curious how or if this skews in the DFW market.Hoping some of you wouldn't mind sharing the square footage multipliers that you use. 

I usually look at the price to rent a studio in the area and then multiply by ~0.75 to get the rent for a bedroom. 

I would take your estimated return on any investment and multiply it by a risk factor two calculate your ROI from real estate.

Your county website will give you the property tax multiplier to tell you your property tax per year. 

@John Carbone how did you arrive at a revenue multiplier of 10x to arrive at purchase price?

I find the "space travellers" are unfamiliar with the area, and they are starting off upset (edit note:  spell checker must have changed the spelling I used from "Pis***" to "upset") because they had to travel so far from home base...and mentally that already sets their calculater up automatically multiplying every number by 90%.2 - "Be prepared with comps that favor what I need the numbers to be for after I got a low appraisal". 

second questions : For multi family in LLC company is easy but I am stuck right now with a rental house and I really like to multiply residential properties and get more experience before update Mutifamily apartment  .

Paint: Interior only (assuming new siding does not need to be painted)Appliances: So you would expect $2,000 for an appliance package (since this is a duplex I multiplied by 2)?

Full gut/rehab (3/2 SFR) 2020 2021 April Multiplier Materials* Materials % of job Multiplier Labor $ Increase 01: Plans / Permits Plans / Permits $ 5,000 $ 5,500 10% 0% 10% $ 500 02: Demolition $ 5,000 $ 5,500 10% 0% 10% $ 500 03: Foundation $ 20,000 $ 22,000 10% 50% 10% $ 2,000 04: Roof / Gutters $ 17,000 $ 18,870 12% 50% 10% $ 1,870 05a: Exterior Paint Exterior Paint $ 7,000 $ 7,700 10% 50% 10% $ 700 05b: Siding $ 5,000 $ 5,500 10% 50% 10% $ 500 06: Windows $ 5,000 $ 5,500 10% 50% 10% $ 500 07: Garage $ 5,000 $ 5,500 10% 50% 10% $ 500 07b: Driveway $ 5,000 $ 5,500 10% 50% 10% $ 500 08: Framing $ 5,000 $ 9,500 170% 50% 10% $ 4,500 09: Finish Carpentry $ 5,000 $ 9,500 170% 50% 10% $ 4,500 10: Sheetrock / Insulation $ 20,000 $ 22,000 10% 50% 10% $ 2,000 11: Interior Paint Interior Paint $ 7,000 $ 7,700 10% 50% 10% $ 700 12a: Flooring (laminate) Flooring (laminate) $ 5,000 $ 5,500 10% 50% 10% $ 500 12b: Flooring (carpet) Flooring (carpet) $ 5,000 $ 5,500 10% 50% 10% $ 500 13: Kitchen All new cabs & countertops $ 7,000 $ 9,940 170% 20% 10% $ 2,940 14: Bathroom $ 5,000 $ 5,500 10% 50% 10% $ 500 15a: Plumbing Rough $ 7,000 $ 7,700 10% 50% 10% $ 700 15b: Plumbing Final Fixtures, water heater, garbage disposal, dishwasher $ 2,500 $ 2,750 10% 50% 10% $ 250 16a: Electrical Rough $ 7,000 $ 8,400 30% 50% 10% $ 1,400 16b: Electrical Final Fixtures $ 2,500 $ 3,000 30% 50% 10% $ 500 17: HVAC Work $ 5,000 $ 5,500 10% 50% 10% $ 500 18: Appliances Range, Garbage disposal, dishwasher $ 4,000 $ 4,400 10% 0% 10% $ 400 19a: Yard Cleanup $ 2,000 $ 2,200 10% 50% 10% $ 200 19b: Fence $ 5,000 $ 9,500 170% 50% 10% $ 4,500 20: Basement / Crawlspace Vapor barrier $ 3,000 $ 3,300 10% 50% 10% $ 300 Contingency Stuff happens $ 5,000 $ 5,500 10% 50% 10% $ 500 trash haul Final trash load $ 500 $ 550 10% 0% 10% $ 50 mow lawn $ 500 $ 550 10% 0% 10% $ 50 Staging $ 3,000 $ 3,300 10% 0% 10% $ 300 $ 180,000 $ 213,360 $ 33,360 16% Does this make sense?