Skip to main contentSkip to navigationSkip to footer

Subject-To Purchase Structure and Mechanics

8 min
2/6

Key Takeaways

  • Subject-to transfers title while existing mortgage stays in place.
  • Due-on-sale is primary risk—lenders rarely invoke when current.
  • Most powerful for capturing below-market rates (3-4% in a 7%+ environment).
  • Ideal sellers have little equity and below-market rates.

Subject-to is the most powerful creative structure for acquiring favorable existing financing.

How Subject-To Works

How Subject-To Works

Buyer takes title (deed transfers), seller's mortgage remains in place. Buyer makes payments on seller's loan. Example: $200K property, $180K mortgage at 3.5%, buyer pays seller $10K, takes over $808/mo payments, rents for $1,600/mo.

Subject-To Economics
Value: $200K | Mortgage: $180K at 3.5% | Seller Payment: $10K Monthly P&I: $808 | Rent: $1,600 | Expenses: $400 Cash Flow: $392/mo | Cash-on-Cash: 47%
The Due-on-Sale Clause

The Due-on-Sale Clause

Virtually all conventional mortgages include this clause allowing lenders to demand repayment upon title transfer. In practice, lenders rarely invoke when payments are current. Mitigation: automatic payments, refinance contingency plan, land trusts in some states.

Risk FactorLikelihoodImpactMitigation Strategy
Due-on-Sale Clause TriggerLow-Medium (5-15%)High — full balance dueMaintain payments on time; use land trust; have refinance exit ready
Seller Files BankruptcyLow (2-5%)High — property enters estateRecord memorandum of agreement; maintain insurance in your name
Seller Insurance CancellationMedium (10-20%)Medium — gap in coverageAdd property to your own policy immediately at closing
Seller Wants to RefinanceMedium (15-25%)Medium — needs payoffInclude non-interference clause; maintain relationship
Property Tax Escrow IssuesLow (3-8%)Low-MediumSet up auto-pay direct to servicer; verify quarterly
Title Issues at ResaleLow (5-10%)Medium-HighUse experienced title company; record deed immediately

Subject-to acquisition risk assessment matrix. Likelihood estimates based on investor surveys. Source: National REIA Creative Finance Committee, 2024.

Ideal Scenarios

Ideal Scenarios

Seller has below-market rate (3-4% when market is 7%+), little equity (small upfront payment), needs quick sale, and rental income covers existing payment.

Key Takeaways

  • Subject-to transfers title while existing mortgage stays in place.
  • Due-on-sale is primary risk—lenders rarely invoke when current.
  • Most powerful for capturing below-market rates (3-4% in a 7%+ environment).
  • Ideal sellers have little equity and below-market rates.

Common Mistakes to Avoid

Not setting up automatic payments on the seller's existing mortgage

Consequence: Missed payments damage the seller's credit and may trigger lender action

Correction: Set up automatic bank payments to the mortgage servicer immediately at closing to ensure timely payment.

Failing to obtain landlord insurance in the buyer's name

Consequence: Coverage gaps if the seller's homeowner policy lapses or is canceled

Correction: Add the property to your own landlord insurance policy at closing — do not rely on the seller's existing policy.

Test Your Knowledge

1.In a subject-to transaction, what happens to the existing mortgage?

2.What is the estimated likelihood of a lender invoking the due-on-sale clause when payments are current?

3.What is the ideal seller profile for a subject-to acquisition?