How Lenders Are Using AirDNA to Assess Rental Income Instead of Traditional 1004 Appraisals

Short-term rentals changed the way investors think about rental income, and DSCR lenders have had to adapt with them. A traditional appraisal can help establish property value, but it may not tell the full story when a property is being purchased or refinanced as an Airbnb, VRBO, or vacation rental.

That is why some DSCR lenders now review tools like AirDNA when they evaluate short-term rental income. AirDNA can help estimate market-level revenue, occupancy, average daily rate, and seasonality for a specific location. Used correctly, it gives lenders a more realistic view of the income potential of a short-term rental property.

The important detail is this: AirDNA does not simply replace a 1004 appraisal for property value. In many loan files, the lender may still require an appraisal for collateral value. AirDNA is more commonly used as a rental-income support tool for short-term rental underwriting, especially in DSCR loan scenarios where property income is the center of the qualification story.

First, Clear Up the 1004 vs. 1007 vs. AirDNA Confusion

A lot of articles talk about AirDNA replacing a 1004 appraisal, but that phrasing is not quite right. The 1004 appraisal is primarily a residential appraisal report used to support market value. Rental-income analysis is usually a separate question.

Fannie Mae's appraisal forms guidance explains the use of appraisal reports such as Form 1004, while its rental income guidance addresses how rental income can be documented in agency loans. DSCR lending is different because it is commonly non-QM and investor-focused, but the distinction between value and rent still matters.

Why Short-Term Rental Income Needs a Different Review

A long-term rental is easier to underwrite because the income is usually fixed by a lease. If the tenant pays $2,500 per month, the lender has a clear starting point.

A short-term rental is different. Revenue depends on nightly rates, seasonality, local events, tourism demand, occupancy, regulations, cleaning costs, property management, and guest competition. A beach-market property, mountain cabin, urban condo, and suburban STR can all perform differently even if the purchase prices look similar.

This is why lenders may look beyond a simple long-term rent estimate when a borrower is applying for a DSCR loan for Airbnb or another short-term rental property.

What AirDNA Shows Lenders

AirDNA collects and models short-term rental market data to estimate how a property may perform. Its Airbnb calculator and Rentalizer tool can show projected revenue, average daily rate, occupancy, and comparable STR performance for a given location.

For DSCR lenders, that data can help answer the practical question: if the property operates as a short-term rental, is the projected income strong enough to cover the proposed mortgage payment?

How AirDNA Fits Into DSCR Loan Underwriting

A DSCR loan compares the income generated by the property with the debt payment on the loan. The core formula is straightforward:

If the AirDNA report projects $6,000 in monthly gross STR revenue and the proposed PITIA is $4,800, the starting DSCR appears to be 1.25. But the lender may not use that number exactly as shown. Depending on the program, the lender may apply a haircut, review market support, factor operating expenses, or use a more conservative income figure.

That is why investors should run the numbers early with a DSCR calculator and then ask the lender how the specific program treats projected STR income. For a deeper explanation of the ratio itself, see Truss's guide to the debt service coverage ratio mortgage.

What Lenders Usually Want to Confirm

Why This Matters for Short-Term Rental Investors

For investors, the difference between long-term rent and short-term rental revenue can be significant. A property that looks weak under a monthly lease estimate may perform much better as a vacation rental. On the other hand, a property that looks strong in a generic STR projection may become much less attractive after occupancy, cleaning, management, furnishing, maintenance, and local rules are considered.

This is where AirDNA can be useful, but only when it is paired with lender judgment and conservative underwriting. Investors should not treat a projected revenue number as guaranteed income. It is a starting point for analysis.

What Can Make a Lender Discount an AirDNA Projection?

Not every AirDNA report will be accepted at face value. Lenders may reduce the usable income or ask for more support when the file has added risk.

If your projected ratio is tight, review Truss's guide on what can happen with a DSCR loan below 1.

Documents That Can Strengthen a Short-Term Rental DSCR File

A strong AirDNA report is helpful, but it is rarely the only thing a lender reviews. The cleaner your file is, the easier it is for the lender to understand the deal.

This is also where the right loan product matters. Some investors may compare short-term rental financing options, while others may need to compare DSCR loans vs. hard money loans if the property needs work before it can generate income.

When AirDNA Can Help Most

AirDNA tends to be most useful when the property's intended use is clearly short-term rental and long-term rent would understate the actual income strategy.

Investors who are new to the space may also want to read Truss's guide on DSCR loans for first-time investors before choosing a lender.

How Truss Financial Group Helps Investors Evaluate STR Income

For investors, the question is not just whether AirDNA looks strong. The real question is whether the property, market, borrower profile, and loan structure fit a lender's actual DSCR guidelines.

Truss Financial Group helps investors look at the full picture: projected STR income, DSCR ratio, down payment, reserves, property type, ownership structure, and whether a DSCR lender is likely to accept the income method being used. That matters because different lenders can treat the same AirDNA projection differently.

If you are comparing an Airbnb-style investment property, start with the numbers before you make the offer. Review the projected revenue, check local restrictions, run the DSCR, and confirm how the lender will treat short-term rental income.

Frequently Asked Questions

1. Can AirDNA replace a 1004 appraisal?

Usually no. AirDNA may support short-term rental income projections, while a 1004 appraisal supports property value and collateral. Some DSCR lenders use both in the same file.

2. Why do DSCR lenders use AirDNA?

DSCR lenders may use AirDNA because short-term rental income depends on nightly rates, occupancy, seasonality, and local demand. A standard long-term rent estimate may not capture that income strategy.

3. What does AirDNA show for a short-term rental property?

AirDNA can show projected annual revenue, average daily rate, occupancy rate, comparable listings, and seasonality. Lenders may use those data points to evaluate projected rental income.

4. Will every lender accept AirDNA income?

No. AirDNA acceptance depends on the lender, loan program, property type, DSCR ratio, market strength, and whether local short-term rental rules support the intended use.

5. What is the difference between Form 1007 and AirDNA?

Form 1007 is generally used to estimate long-term monthly market rent. AirDNA is used to analyze short-term rental performance, including nightly rates, occupancy, and projected revenue.

6. Can I qualify for a DSCR loan using projected Airbnb income?

You may be able to, depending on the lender. Some DSCR programs allow projected short-term rental income supported by AirDNA or similar data, but requirements vary.

7. What DSCR ratio do lenders usually want for short-term rentals?

Many lenders prefer the property to be at or above 1.0, with stronger files often at 1.15 to 1.25 or higher. Exact thresholds depend on the program and the overall risk profile.

8. What can hurt my AirDNA-based DSCR approval?

Weak comparable listings, local STR restrictions, low reserves, a tight DSCR ratio, or a property with no operating history can make approval more difficult.

9. Should I rely only on AirDNA before buying a short-term rental?

No. AirDNA is useful, but investors should also review actual comps, local rules, operating expenses, management assumptions, reserves, and the lender's income calculation method.

10. Does Truss Financial Group offer DSCR loans for short-term rentals?

Truss Financial Group works with investor-focused loan options, including DSCR loans that may fit short-term rental properties depending on the property, income support, and lender guidelines.