Freddie Mac Guidelines: Special Property Appraisal Requirements

Why These Special Requirements Matter

When you're buying anything other than a standard single-family home, your appraisal becomes more complex. Fannie Mae knows that investment properties, condos, manufactured homes, and other special property types require different valuation methods than a typical house.

The most detailed requirements apply to 2-4 unit properties because these are income-producing investments. Your lender needs to know not just what the property is worth, but how much rental income it can generate. This income directly affects your ability to qualify for the loan.

Say you're buying a duplex for $400,000. The appraiser can't just look at what similar duplexes sold for. They also need to research what similar units rent for in your area and calculate whether the property's income potential supports its purchase price.

How Appraisers Handle 2-4 Unit Properties

The appraiser must complete Form 72, the Small Residential Income Property Appraisal Report. This form requires much more rental market analysis than a standard home appraisal.

First, they'll research at least three comparable rental properties. These rentals must have current rental information and be similar to your property in size, condition, and location. The appraiser can't use outdated rent data from two years ago or rentals from across town.

The appraiser then creates a rent schedule showing two key numbers for each unit in your property: the actual current rent and the estimated market rent. If one unit currently rents for $1,200 but similar units rent for $1,400, the appraiser will note both figures.

The Four Required Units of Comparison

For 2-4 unit properties, appraisers must calculate four specific measurements for each comparable sale:

• Sales price per square foot of gross building area
• Sales price per unit
• Sales price per room
• Gross rent multiplier

The gross rent multiplier is particularly important. It shows how many years of gross rental income equal the property's sale price. If a duplex sells for $300,000 and generates $30,000 in annual rent, the gross rent multiplier is 10.

For purchase transactions, the appraiser must also calculate these same four measurements for the property you're buying. This lets the underwriter compare your property directly to recent sales.

What the Appraiser Must Explain

The appraisal report must include a reconciliation section that explains how the appraiser arrived at the final value. They can't just average the comparable sales prices. Instead, they must explain which factors matter most to typical investors in your market area.

Maybe investors in your area focus heavily on gross rent multipliers because they're primarily buy-and-hold investors. Or perhaps they emphasize price per unit because they're looking for properties to renovate and flip. The appraiser must identify these market preferences and weight their analysis accordingly.

This commentary section often makes or breaks the appraisal. A weak explanation here can lead to underwriter questions or requests for a new appraisal.

Documents You'll Need to Provide

If you're buying a property that's currently rented, gather these documents before the appraisal:

• Current lease agreements for all units
• Rent rolls showing payment history
• Any recent rent increases or lease renewals
• Utility bills if tenants don't pay their own utilities
• Property tax statements
• Insurance declarations page

For vacant units, provide information about recent rental history if available. The appraiser needs to understand the property's income potential even if units are currently empty.

Common Problems That Delay Closings

Rental comparables can be hard to find, especially in smaller markets. If the appraiser struggles to locate three truly comparable rentals, they may need to expand their search area or use older data with appropriate adjustments. This research takes time and can delay your appraisal delivery.

Market rent estimates that seem too high or too low compared to actual rents often trigger underwriter questions. If your property currently rents units for $800 but the appraiser estimates market rent at $1,200, the underwriter will want a detailed explanation of this difference.

Properties with significant deferred maintenance present another challenge. The appraiser must estimate both current value and potential value after repairs, then determine appropriate rental rates for each scenario.

Special Considerations for Other Property Types

Condominium appraisals require additional analysis of the condo project's financial health and legal status. The appraiser must review the homeowners association budget, reserve funds, and any pending litigation. See [[Section 5701.8(a)]] for complete condo requirements.

Manufactured homes need verification that they're permanently affixed to the foundation and meet HUD standards. The appraiser must also confirm the home's age and condition meet Fannie Mae requirements. Full details are in [[Section 5703.9]].

Leasehold properties require analysis of the ground lease terms, including rent escalations and renewal options. The appraiser must determine how the leasehold affects the property's value compared to fee simple ownership. See [[Section 5704.2]] for leasehold specifics.

Cooperative apartments involve purchasing shares in a corporation rather than real estate directly. The appraisal must evaluate both the cooperative's financial condition and the specific unit's value. Complete requirements are found in [[Chapter 5705]].

Why These Rules Exist

Fannie Mae created these detailed requirements because special property types carry different risks than standard single-family homes. Investment properties depend on rental income for cash flow. Condos can lose value if the association faces financial problems. Manufactured homes depreciate differently than site-built homes.

The additional appraisal requirements help ensure that both you and your lender understand what you're buying. A thorough appraisal protects you from overpaying and protects the lender from making a loan that exceeds the property's true value.

These requirements also standardize how appraisers evaluate complex properties. Without clear guidelines, one appraiser might focus on comparable sales while another emphasizes rental income. The standardized approach creates consistency across the mortgage industry.

References

For the official guidelines, see 5605.9: Special property appraisal requirements in the Fannie Mae Selling Guide.