Greenhaven | Social Security Housing Calculator
GREENHAVEN SOLUTIONS, LLC

Social Security + Small Multifamily
Housing Calculator Plus

Your Social Security calculator, now with individual unit rents, live-in selection, property comparisons, closing funds and a Greenhaven report.

Planning estimate · Not a loan approval or lender decision

Enter your scenario

Borrower income and debts

Only use a gross-up permitted by the selected loan program.

Property and rental assumptions

Live-in unit rent is excluded from the qualifying estimate.
All four values support the comparison. The selected property uses only its first 2, 3 or 4 units.
All unit rents are totaled first. The selected live-in unit is then excluded before the rental adjustment.
Enter the applicable PHA’s current payment standard for the bedroom size. It is a gross rent limit, not a guaranteed tenant payment.
Lenders may apply different rules or use a rent schedule.
Illustrative credit based on estimated purchase price. Lender and program limits apply.
Estimated gift funds available toward the down payment. Lender documentation and eligibility rules apply.
Used to estimate monthly property taxes from the calculated home price.

Closing funds and report

Seller credits are limited to the entered cap and eligible closing costs. They do not cover the down payment. Gift funds offset remaining down payment and costs. Lender rules apply; reserves and upfront program fees are excluded.

Results update as you type. Blank optional dollar amounts count as $0.

Estimated results

Adjusted Social Security$1,72515% illustration on $1,500 benefit
Base qualifying income$1,725before rental income
Monthly non-housing debt$200entered debt payments
Target DTI45%user-selected estimate

Estimated affordable purchase price

Market rent 4 units

$293,896 estimated affordable purchase price

Total potential rent: $7,200 · Excluding live-in unit 1: $5,400

Income calculation: $1,725 grossed-up Social Security + $0 other income + $4,050 rent after 25% adjustment = $5,775/mo.

Monthly housing budget: $2,399

Projected total housing payment: $2,399/mo. at $293,896 estimated affordable price.

Principal & interest $1,793 · Taxes $306 · Homeowners insurance $150 · Mortgage insurance $150 · HOA $0

Loan amount: $283,610 · Estimated back-end DTI: 45.0%

Cash needed to close

Down payment $10,286 + eligible closing costs $8,817 + other prepaids $2,500

Seller credit applied: $0 · Gift applied: $0 · Earnest money credited: $0

Cash still due: $21,603 · Total personal contribution: $21,603

Unused seller credit $0 · Unused gift funds $0.

Section 8 note: HUD publishes Fair Market Rents; local Public Housing Agencies set payment standards and may apply bedroom-size, utility, and rent-reasonableness rules. This calculator does not retrieve local rates automatically. Confirm the current figure with the PHA serving the property.

This educational calculator is not financial, legal, tax, or lending advice. This is a planning estimate, not a loan approval. Actual qualifying income, tax assessment, insurance, mortgage insurance, and rental treatment depend on the loan program, property, documentation, and lender. Gross-up does not increase the actual benefit check. Reserve requirements, upfront program fees and any FHA self-sufficiency test are not modeled. Confirm terms with a licensed lender before relying on the estimate.

Duplex vs. triplex vs. fourplex

Same financing assumptions for each property size. Individual-rent mode uses units 1–2, 1–3, or 1–4. If your live-in unit does not exist in a smaller property, its last unit is used. Closing funds use the entered price, or each estimated affordable price if price is zero.

Market rents

Property Live-in Total rent Rent counted Qualifying income Affordable price Payment Cash due
Duplex Unit 1 $3,600 $1,350 $3,075 $123,755 $1,184 $10,544
Triplex Unit 1 $5,400 $2,700 $4,425 $208,826 $1,791 $16,074
Fourplex Unit 1 $7,200 $4,050 $5,775 $293,896 $2,399 $21,603