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Calcimator

Mixed-Use Development Calculator

Plan mixed-use projects with residential, retail, and office components. Calculate unit counts, parking with shared reductions, and trip generation.

Inputs

sq ft
sq ft
spaces/unit
spaces/1,000 sf
spaces/1,000 sf

Results

Residential Units

70

Required Parking Spaces

184

Residential Area60,000 sq ft
Retail Area25,000 sq ft
Office Area15,000 sq ft
Base Parking229 spaces
Shared Parking Savings46 spaces
Est. Residents147
Est. Employees125
Net PM Peak Trips124
Three Bed10
Parking Structure Area64,400
How to Use This Calculator
  1. Enter Total Floor Area, Residential %, and Retail / Commercial %.
  2. Set Office %, Avg. Unit Size, and Residential Parking Rate.
  3. Adjust Retail Parking Rate, Office Parking Rate as needed.
  4. Review Residential Units and Required Parking Spaces.
  5. Use Residential Area (sq ft) and Retail Area (sq ft) to inform your decision.

How the result changes with Total Floor Area

Total Floor AreaResidential UnitsRequired Parking Spaces
209,000147384
706,5004981,298
1,303,5009202,396
1,801,0001,2713,310

What each input means

Total Floor Area
Total gross floor area of the mixed-use building or complex.
Residential %
Percentage of floor area dedicated to residential units.
Retail / Commercial %
Percentage of floor area for retail and commercial uses (typically ground floor).
Office %
Percentage of floor area for office use.
Avg. Unit Size
Average residential unit size including common area allocation.
Residential Parking Rate
Parking spaces required per residential unit. Urban: 0.5-1.0, Suburban: 1.5-2.0.
Retail Parking Rate
Parking spaces per 1,000 sq ft of retail area.
Office Parking Rate
Parking spaces per 1,000 sq ft of office area.
Shared Parking Reduction
Reduction for shared parking between uses with different peak hours. Typical 15-30%.

How this is calculated

Worked example, using the default values

  1. Identify Input Parameters
    4 parameters
    Total Floor Area = 100000, Residential % = 60, Retail / Commercial % = 25, Office % = 15 = 9 input(s) provided
  2. Calculate Residential Units
    Residential Units
    70 = 70
  3. Calculate Required Parking Spaces
    Required Parking Spaces
    184 = 184
  4. Calculate Residential Area
    Residential Area
    60000 = 60000
  5. Calculate Retail Area
    Retail Area
    25000 = 25000

Engine last updated . Checked against 3 independently-derived tests — how we verify calculators.

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