Pricing an architectural home starts with the same tool as any other house, recent comparable sales, but the comparables rarely line up neatly. A post-and-beam house with an atrium, an architect's name on the plans and original materials doesn't have many true matches, and the closest sale in distance may be the furthest in design.
This guide is about method, not numbers. It explains how appraisers are told to choose comparables, how quality and condition ratings treat architect-designed and tract homes, a step-by-step way to build a price when the comps don't match, and how to prepare for the appraisal, including the reconsideration of value process if the number comes in short.
Why comparables break down for architectural homes
A typical pricing exercise assumes a supply of similar houses that sold recently nearby. Architectural homes strain that assumption in several ways:
Plan differences inside one tract. Palo Alto's Eichler design guidelines describe floor plans that are fairly square around a center atrium and others that are U-shaped around a rear patio or a front carport or courtyard entry. Two houses on the same street can live very differently. Our floor plans page shows how the models vary.
Originality versus renovation. One house may keep its paneling, beams and glass walls; the next may have been remodeled in a way that changed its character. Neither is automatically a match for yours.
Attribution. A house tied to a recognized architect or builder may draw a different set of buyers than a similar-sized house nearby. Our page on the difference between an Eichler and a mid-mod home explains why those labels aren't interchangeable.
Few recent sales. In a small tract, there may simply not be enough sales of similar homes in a given year.
How appraisers are told to choose comparables
When a buyer's loan is headed to Fannie Mae, the appraisal follows Fannie Mae's Selling Guide. Its comparable sales section, dated June 2025, shapes what the appraiser can do:
At least three closed comparable sales must be used.
Sales that closed within the last 12 months should be used; older sales are acceptable when the appraiser explains why.
Distance is reported in miles, measured in a straight line.
The appraiser must not expand neighborhood boundaries just to encompass the comparables selected. Sales from competing neighborhoods can be used if the differences are addressed and explained.
The guide recognizes that an appraiser might need to use properties that are not truly comparable, which is acceptable when the appraiser documents and explains the choice.
Those rules give room to reach further for a good match, as long as the reasoning is written down. A seller's pricing work should be built the same way. One timing note: new appraisals submitted on or after November 2, 2026 use a redesigned appraisal dataset (UAD 3.6), and the Selling Guide says lenders using it follow a separate policy supplement, so ask the lender whether any of these rules differ for your loan.
Quality and condition ratings
Fannie Mae's appraisal rules also rate each property for quality (Q1 to Q6) and condition (C1 to C6), on the home's own merits rather than relative to the neighborhood. Freddie Mac says the redesigned appraisal dataset keeps the same scale but rewrote the definitions for clarity and added separate interior and exterior ratings. The Selling Guide definitions in use through that change show how the scale treats architectural homes:
Q1: usually unique structures that are individually designed by an architect for a specified user.
Q2: often custom designed for construction on an individual property owner's site, though also found in high-quality tract developments.
Q3: higher-quality homes built from individual or readily available designer plans in above-standard residential tract developments, with many materials and finishes upgraded from stock standards.
Condition runs from C1, very recently constructed and not previously occupied, to C6, with substantial damage. C2 means no deferred maintenance; C4 means some minor deferred maintenance. Knowing where your house likely falls on both scales helps you pick comparables in the same band, or adjust honestly for the gap. Ask the appraiser or lender which definitions apply to your report.
A method for pricing when the comps don't match
Start with the same tract and model. Sales of the same builder's plan, in the same tract, come first, even if older. Note how each was updated.
Widen in rings. Next, other models in the same tract; then the same builder's or architect's tracts nearby; then competing neighborhoods with similar homes; then non-architectural homes of similar size and lot as a reference point.
Match quality and condition bands. Group the candidates by likely Q and C ratings. A remodeled house in a different band needs a clear adjustment, not a silent match.
Adjust feature by feature. Living area, bedrooms and baths, lot, garage or carport, atrium or not, and the quality of any renovation. Write down why each adjustment goes up or down.
Bracket the subject. Look for sales above and below your house on the features that matter, so the price sits inside the evidence rather than at its edge.
Check current competition. Active and pending listings don't set value, but they show what a buyer will compare your house against this week.
Write a pricing memo. A one-page summary of the comparables, adjustments and reasoning keeps the seller, the agent and later the appraiser working from the same facts.
Our iconic mid-century homes page shows the kind of design detail worth documenting in that memo.
Preparing for the appraisal
No one on either side should try to steer an appraiser's conclusion, but you can make sure the appraiser has the facts. Prepare a packet that includes:
The comparable sales you relied on, with notes on plan, condition and updates
A list of improvements with dates and permits
Documentation of the architect or builder, such as original plans or brochures
Notes on features a photo can miss, such as radiant heat, glass walls, clerestories and the atrium
If the appraisal comes in below the contract price, a buyer who is financing has a defined process. The Federal Housing Finance Agency describes a reconsideration of value as a request to the appraiser to reassess the value of a property, for reasons such as potential reporting deficiencies or an inappropriate selection of comparables, and it requires lenders to disclose the process. Under Fannie Mae's rules:
Only one borrower-initiated reconsideration is permitted per appraisal, and it can't be submitted after the loan closes.
The request identifies the unsupported, inaccurate or deficient areas of the report and may include up to five additional comparable properties, with their data sources and an explanation of why they support the request.
The lender must give the borrower a disclosure describing the process when it provides the appraisal.
The pricing memo above is the natural starting point for that request. Contract terms and loan rules vary, so check yours with your agent and lender.
Frequently asked questions
How do appraisers value a one-of-a-kind house?
They still use comparable sales, but Fannie Mae's rules let them reach to competing neighborhoods, older sales or properties that aren't truly comparable, as long as they explain the choice. The quality rating, on a scale from Q1 to Q6, also frames how the house is compared; the Selling Guide's Q1 definition describes unique homes individually designed by an architect.
Can I ask the appraiser to use different comparables?
A buyer can request a reconsideration of value through the lender. Under Fannie Mae's rules, one borrower-initiated request is allowed per appraisal, before closing, with up to five additional comparable properties and an explanation.
Should I compare an Eichler to non-Eichler homes nearby?
Start with the same tract and model, then widen. Non-architectural homes of similar size are a useful reference point, but adjust for plan, quality and condition rather than treating them as direct matches.
How old can a comparable sale be?
Fannie Mae's guide says comparables that closed within the last 12 months should be used, and older sales are acceptable when the appraiser explains why. For a seller's pricing, older sales of the same model can still be informative if you adjust for time and condition.
Related reading
Selling a Mid-Century Modern Home: What to Fix and What to Leave
Mid-Century Tract Homes vs. Custom Moderns: What Buyers Should Know
Staging a Mid-Century Modern Home: Scale, Sightlines and Restraint
More guides on this topic: Buying & Selling a Mid-Century Modern Home
Pricing a home that doesn't fit the usual comparables? Call or text the Boyenga Team at (408) 373-1660 or (650) 383-8606, contact the Boyenga Team, or see our selling assistance page for how we build a pricing plan for mid-century and architectural homes.
