How to underwrite model home leaseback returns

Start with the four core metrics

You can run all four against a real deal structure on our example listing, which includes an interactive pro forma with adjustable down payment, rate, and hold period.

Build the net operating income carefully

The single biggest underwriting error is treating the headline rent as net income. Whether that's roughly true depends entirely on the lease structure.

• NNN-style lease: the builder pays taxes, insurance, HOA, utilities, landscaping, and routine maintenance, so NOI sits close to gross rent. Confirm it line by line in the lease, not from a marketing sheet.
• Gross or modified lease: you carry some of those costs, and each one comes straight out of NOI.
• Reserves: even with new construction and a corporate tenant, hold a reserve for the post-lease period.
• Property taxes: new-construction assessments frequently reset upward after the first year. Underwrite the reassessed figure, not the builder's current tax bill.

Then underwrite the exit, not just the coupon

Conversion cost

A sales office is not a house. Signage, commercial-grade lighting, converted garage offices, extra parking, and accessibility features typically have to come out. The lease should specify the restoration scope and who pays for it; if it doesn't, price the work yourself and subtract it from your return.

Market rent after the builder leaves

The contracted leaseback rent and the market residential rent for the same home are two different numbers, and they can differ in either direction. Pull local rent comps for the same bedroom count and finish level, and model the post-lease years at that market rent rather than the leaseback rent.

Resale value and the appraisal gap

Model homes carry an upgrade premium — design finishes, corner or premium lots, mature landscaping. Some of that premium holds at resale and some does not, because your comps will be standard-spec homes in the same community. This gap matters twice: at acquisition, where it can limit loan proceeds, and at exit, where it can compress your gain.

Sensitivities worth running

• Rent drops 10% at the re-lease event.
• Two to three months of vacancy between the builder vacating and your first residential tenant.
• Conversion cost comes in at double your estimate.
• Exit price flat rather than appreciating.
• Interest rate one point higher if you plan to refinance.

If the deal still clears your target under those conditions, the underwriting is honest. If it only works at the headline cap rate, the margin is thinner than it appears.

What to request from the builder before you commit

• The full lease draft, including guarantor, escalations, options, and restoration scope.
• The signing entity and its parent, so you can assess credit behind the rent.
• Community absorption to date and remaining lots, which drives how long the builder actually needs the model.
• The upgrade package cost breakdown versus base-model pricing.
• Recent closed comps in the community and current tax assessment status.
• Warranty coverage and what transfers to you at closing.

Nothing here is investment, tax, or legal advice, and no return is guaranteed. Verify every figure against the actual lease and closing documents with your own advisors.