Blanket Mortgage Calculator

Calculate the combined monthly payment for a single mortgage covering 2-10 investment properties. Model release clause costs, compare to individual mortgages, analyze DSCR, and assess cross-default risk.

props
$
$
%
Combined Monthly Payment
$6,208
One payment covering all 3 properties
Portfolio LTV
70.0%
Per-Property Payment
$2,069
Release Clause Price
$322,000
Closing Costs (est.)
$16,800
Cross-collateralization warning: All 3 properties serve as collateral for one loan. Default on any payment triggers default on all properties simultaneously. Understand this risk before proceeding.

A blanket mortgage lets investors and developers finance multiple properties under a single loan — one application, one closing, one monthly payment.

Single Loan, Multiple Collateral
Instead of 3 separate mortgages, you take out one loan of $840,000 secured by all 3 properties simultaneously. The lender holds a lien on every property in the portfolio. This is called cross-collateralization.
One Closing, One Payment
You close once and pay a single monthly payment of $6,208. This simplifies accounting, reduces administrative overhead, and eliminates the need to track 3 separate loan payments, insurance policies, and tax deadlines per lender requirement.
Partial Release Clause
The partial release clause is the mechanism that makes blanket mortgages usable for developers and active investors. When you sell one property, you pay a release price (in your case: $322,000 per property) and the lender removes that property from the blanket lien — allowing it to be sold with a clear title.
Not Available from Fannie/Freddie
Blanket mortgages are not available through conventional conforming channels (Fannie Mae, Freddie Mac). They are offered by portfolio lenders (banks that hold loans on their books), credit unions, and private lenders. Terms, rates, and underwriting criteria vary widely — shop multiple lenders.

Portfolio breakdown (3 properties, equal allocation):

PropertyValueLoan AllocatedMonthly P&IRelease Price
Property 1$400,000$280,000$2,069$322,000
Property 2$400,000$280,000$2,069$322,000
Property 3$400,000$280,000$2,069$322,000
Total$1,200,000$840,000$6,208$966,000

Experienced real estate investors use blanket mortgages as an acquisition tool — then refinance into individual mortgages as equity builds.

$
Portfolio DSCR
0.88x
Debt Service Coverage Ratio — lenders typically require 1.20x–1.35x
Monthly Rent
$8,400
Est. Annual NOI (65%)
$65,520
Annual Debt Service
$74,490
DSCR Requirement
1.20x–1.35x

Blanket-to-individual refinance strategy:

Phase 1: Acquisition (Year 1-2)
Use the blanket mortgage to acquire all 3 properties with a single closing ($16,800 closing vs. $36,000 individual). Speed of acquisition and lower initial friction is the primary advantage.
Phase 2: Stabilization (Year 2-4)
Focus on getting all properties tenanted, increasing rents to market, and completing any needed improvements. Document rent rolls and income — this becomes your refinance package. Build cash reserves: 6 months of blanket payments minimum.
Phase 3: Individual Refinance (Year 3-5)
As each property reaches strong LTV (65-70%) and demonstrated rental income, refinance it into an individual DSCR loan or conventional investment property loan. Use the release clause to free it from the blanket, then immediately refinance with a new individual lender. Each property can now be managed, sold, or leveraged independently.
Phase 4: Scale (Ongoing)
Once equity is built and properties are individually financed, use the freed equity to acquire the next portfolio via another blanket mortgage. Repeat the cycle. The blanket mortgage becomes the acquisition vehicle; individual mortgages become the long-term hold structure.

How to Use the Blanket Mortgage Calculator

This calculator analyzes single mortgages covering multiple investment properties — calculating combined payments, per-property allocations, release clause requirements, and portfolio risk for real estate investors and developers.

Quick Calculator

Enter the number of properties (2-10), total portfolio value, total loan amount, interest rate, and loan term. The calculator shows your combined monthly payment, portfolio LTV, per-property payment, and the release clause price required to sell an individual property from the blanket.

Advanced: How It Works, vs Individual Mortgages, Release Clause

The How It Works tab explains cross-collateralization, partial release clauses, and why blanket mortgages are unavailable from Fannie/Freddie — with a per-property breakdown table. The vs Individual Mortgages tab compares total closing costs, monthly payments, and lifetime interest. The Release Clause tab walks through the exact step-by-step process for selling one property out of a blanket.

Pro: Portfolio Strategy, Risk Analysis, Lender Sources

The Portfolio Strategy tab shows the blanket-to-individual refinance strategy experienced investors use to scale, with DSCR analysis. The Risk Analysis tab quantifies cross-default risk, vacancy concentration, and sale restrictions. The Lender Sources tab covers where to find blanket mortgages (community banks, credit unions, private lenders, DSCR programs) with specific terms and approaches.

How Blanket Mortgage Payments Are Calculated

Combined Monthly Payment = PMT(rate/12, term × 12, total loan amount)

Per-Property Payment = Combined Payment ÷ Number of Properties

Portfolio LTV = Total Loan ÷ Total Portfolio Value × 100

Release Price = (Total Loan ÷ Properties) × Release Clause %

Example: 3 properties worth $1,200,000 | Blanket loan: $840,000
Rate: 7.5% | Term: 25 years
Combined Payment = PMT(7.5%/12, 300, $840,000) = ~$6,198/mo
Per-Property = $6,198 ÷ 3 = $2,066/mo
Portfolio LTV = $840,000 ÷ $1,200,000 = 70%
Release Price (115%) = ($840,000÷3) × 115% = $322,000

The release clause price (typically 100-125% of the allocated loan amount per property) is the key number that determines whether selling an individual property is financially feasible from within a blanket structure.

Example: 3-Property Rental Portfolio in Texas

3 properties worth $1.2M total — blanket loan of $840,000 at 7.5% for 25 years

Total Portfolio Value$1,200,000
Total Blanket Loan$840,000
Portfolio LTV70%
Rate / Term7.5% / 25 years
Combined Monthly Payment$6,198
Per-Property Payment (equal)$2,066
Gross Monthly Rent (portfolio)$8,400
Est. NOI (65% ratio)$5,460/mo
DSCR0.88x (below 1.2x threshold!)
Blanket Closing Cost (2%)$16,800
Individual Closing (3% × 3)$36,000
Closing Savings$19,200
Release Price per Property (115%)$322,000

This example shows a DSCR below the typical 1.20x lender requirement — indicating the portfolio generates insufficient cash flow to service the debt at these terms. The investor would need to either increase rents, reduce the loan amount, or extend the term to improve DSCR before a lender would approve this blanket structure.

Frequently Asked Questions

A blanket mortgage is a single loan that uses multiple properties as collateral — typically 2-10 properties. Real estate investors use them to acquire multiple properties in a single transaction, reducing closing costs and simplifying financing. Residential developers use them to finance multiple lots or units under construction. The key feature is cross-collateralization: all properties secure the same debt, and a partial release clause allows individual properties to be sold from the portfolio.
Cross-collateralization means all properties in the blanket serve as security for the entire loan. If you default on one monthly payment, the lender has the right to foreclose on all properties simultaneously — not just one. This is the fundamental risk of blanket mortgages. With individual mortgages, a problem on one property affects only that loan. With a blanket, one vacancy or repair crisis can cascade into a total portfolio default. Always maintain a payment reserve of at least 3 months.
A partial release clause allows you to sell an individual property from the blanket by paying the lender a specified release price — typically 100-125% of the property's allocated loan amount. For example, if a property is allocated $280,000 of a blanket loan and the release clause is 115%, you pay $322,000 to the lender, they release the lien on that property, and the remaining properties continue under the blanket. Negotiate release clause terms before signing — a high release percentage can make selling individual properties difficult.
Blanket mortgages are not available from conventional sources (Fannie Mae, Freddie Mac) — they must be found through portfolio lenders. Your best sources are community banks and credit unions in your market (walk into the commercial lending department), private/hard money lenders for short-term needs, and DSCR portfolio loan programs from lenders like CoreVest, Visio Lending, or Lima One Capital. Each lender sets their own terms, LTV limits, and DSCR requirements — shopping multiple sources is essential.
A blanket mortgage makes sense when: (1) you are acquiring multiple properties simultaneously and speed matters, (2) closing cost savings are significant ($20,000+ vs. individual closings), (3) you have a clear exit plan (refinance into individual loans or sell within 3-5 years), and (4) the portfolio cash flow comfortably covers the combined payment. Individual mortgages make more sense for long-term hold strategies, when properties have very different risk profiles, or when you want the flexibility to sell, refinance, or leverage properties independently.

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