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Grounded Solutions Network
Inclusionary Housing Calculator
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We are filling in values for a hypothetical project in a hypothetical place. You can adjust the affordability requirement to see how much affordable housing can be supported.

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Enter my New Project

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FEASIBLE
NOT FEASIBLE
Profit is too low
AFFORDABLE UNITS
AS % OF TOTAL UNITS
PROJECT
DESCRIPTION
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Description

Enter a name or description for this project.
Tenure
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Tenure

Rental or Ownership
  • Rental
  • Ownership
BASE UNITS
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Base Units

Number of units in the building (excluding any density bonus units)
SITE AREA
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Site Area (acres or hectares)

Size of the property (in acres or hectares) on which the project will be built
PARKING RATIO (spaces per unit)
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Parking Ratio (spaces per unit)

The number of parking spaces compared to the number of units in the building. Generally based on local planning/zoning requirements.
UNIT MIX
  • Basic Mode
  • Detailed Mode
UNIT SPECIFICATIONS
# units avg. size (sq. ft) approx. rent
Studio
1BR
2BR
3BR
4BR
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AFFORDABILITY
AFFORDABLE UNITS AS % OF TOTAL UNITS
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Affordable Units as % of Total Units

The share of housing units in a project that are sold or rented at a regulated affordable price
METHOD OF AFFORDABLE PRICE CALCULATION
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Method of Affordable Price Calculation

'Income based' calculates affordable prices based on a target income category. 'Price based' calculates prices based on a fixed discount relative to the market price. With 'Custom' you must input your own prices for each size and type of unit.
  • Income based
  • Price based
  • Custom
AVERAGE LOCAL MARKET HOME PRICE
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Average Local Market Home Price

Published median or average home sales price for the area (not this project)
AVERAGE LOCAL MARKET RENT
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Average Local Market Rent

Published median or average rent for the area (not this project)
AFFORDABLE HOUSING FEE (per unit)
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Community Benefit Fee (per unit)

Some communities require or allow payment of a fee to support development of affordable housing instead of providing onsite units. Note: be sure to set Affordable Units to 0% if you intend for this fee to take the place of onsite units
AMI: AREA MEDIAN INCOME for a family of 4
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Area median income

Area Median Income is a typical way of measuring affordability levels for housing policy. Defined by the US Department of Housing and Urban Development (HUD) on an annual basis, you can find the latest Area Median Income for your area published by HUD at http://www.huduser.org/portal/datasets/il.html
Affordable units breakdown
AFFORDABILITY LEVELS
affordability level bchlr 1br 2br 3br 4br
A
percentile income:
of AMI
of market
B
percentile income:
of AMI
of market
C
percentile income:
of AMI
of market

This development doesn't contain any affordable units.

Adjust “AFFORDABLE UNITS” at the top of the page to add some affordable units to your development.

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INCENTIVES
AVAILABLE INCENTIVES     make small
Density Bonus
An allowance for additional bonus units.
Parking Reduction
The developer is required to build fewer parking spaces.
Streamlined Processing
The process of applications, permitting etc. is expedited.
Fee Reduction
A reduction in fee, based on the number of units.
Tax Abatement
The developer is incentivized with a reduction in taxes.
Grant (per unit)
A developer grant based on the number of units.
Grant (fixed)
A fixed-value developer grant.
Annual Operating Grant
Any annual grant or operating subsidy incl. any rent subsidies.
MY INCENTIVES
Click on the incentives you’d like to add to the project.
DEVELOPMENT COST
CONSTRUCTION COSTS
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Construction Costs (per sq ft, per sq meter, total cost, or cost per unit)

Construction hard costs include all construction material, labour, and general contractor overhead. Construction costs depend on building type. Buildings built with wood frames are much cheaper than those built with concrete or steel frames, for example.
LAND COST
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Land Cost (per acre, per hectare, total cost, or cost per unit)

This is the price that a developer would need to pay to acquire the property.
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OPERATING COST
RENTAL VACANCY RATE
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Rental Vacancy Rate (% of units)

The percent of units in a rental property that are vacant after the initial lease-up period is over. Five percent vacancy is considered fully occupied with regular turnover.
RENTAL OPERATING COST
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Rental Operating Cost (% of gross revenue)

The percent of gross rental revenue that is dedicated to operations and upkeep.
FINANCING
CONSTRUCTION LOAN INTEREST RATE
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Construction Loan Interest Rate

The interest rate on a developer's construction loan
LOAN TO COST RATIO
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Loan to Cost Ratio

The share of the total project cost that a developer finances with the construction loan
PERMANENT LOAN INTEREST RATE
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Permanent Loan Interest Rate

The annual interest rate on the permanent loan (after completion of construction)
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PROFITABILITY
MEASURE OF PROFITABILITY
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Measure of Profitability

Which measure or profitability will be used to determine whether the project is financially feasible?
  • Profit as a % of Development cost
  • Yield on Cost
  • IRR
  • Residual Land Value
REQUIRED PROFIT (% of development costs)
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Required Profit (% of development costs)

The total developer profit as a percent of total development costs required to build this project. The project is considered feasible if the profit is above this threshold.
REQUIRED YIELD ON COST
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Required Yield on Cost

The minimum yield on cost at which a developer will deem a project feasible. Often this value is near 10%.
CAP RATE
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Cap Rate

The capitalization rate, or 'cap rate,' is the ratio between the Net Operating Income and the project's value. The cap rate is used to calculate the value of a rental property. Cap rates differ among different project types and markets and depending on the level of risk.
Project Name
Total units (inc. bonus)
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Units per acre
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Development cost per unit
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Net Operating Income
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Total Profit
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Profit as % of TDC
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Welcome to the Inclusionary Housing Calculator!
Your goal is to ensure that your project remains financially feasible (with a green check mark) as you change the inputs.
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The right bar contains some more detailed information on your project. This information updates in real time as you make changes to project parameters.
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Let's start by adding some affordable units to your project. You can either drag the white slider, or enter a percentage into the field.

Try setting 10% or more affordable units.
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Notice the changes to your project as you adjust the percentage of affordable units (e.g. costs go up and profit goes down as you add more affordable units). To offset these changes, you might try adding some incentives. Scroll down to the “Incentives” section and experiment with the sliders and fields there. Click “More” on the lower right under Incentives to see more options.
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For more details on the specifications and financials of the current project, click the "Report" button.
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To return to the main calculator page from the Report page, click on the “Home” button.
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The Calculator lets you save multiple projects. When you’re ready, you can use the Save button, and the Projects menu at the right to save and switch between projects.
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Have fun!
The Calculator is meant to invite exploration. Enter some values that reflect a real-world project, or just try out some of the pre-fab templates. Drag sliders, change values, and see how these changes can affect your project.
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