Geospatial Bracketing: The Future of Appraisal Comps

For decades, appraisers and algorithms have used the same crude tool to find comparable sales: the "1 Mile Radius."

It is a simple circle drawn around a property. It is also deeply flawed. A simple circle blindly crosses major highways, school district boundaries, and neighborhood dividing lines. It treats a house in a luxury gated community the same as a house across the tracks in an industrial zone.

The Resideline Solution: Multi Tiered Bracketing

In 2026, technology allows for something better. Resideline uses a sophisticated Tiered Bracketing system that mimics the logic of a human expert but operates in seconds.

Tier 1: The Model Match: We start by looking for the "perfect" comp. Same bedrooms, same bathrooms, similar square footage, and extremely close proximity (0.2 miles). If these exist, we use them exclusively.

Tier 2: Intelligent Expansion: If exact matches are missing, we don't just jump to a massive radius. We expand incrementally. We widen the search to 0.5 miles, then 1.0 miles, checking for statistical relevance at each step. This ensures we never pull a distant comp when a closer one will do.

Tier 3: Mathematical Bracketing: In rural areas or sparse markets, there may be no similar homes. Here, we use Bracketing. We find a larger home and a smaller home. We calculate the local dynamic coefficient (the price per square foot adjustment) and mathematically interpolate the value of the subject property.

Why It Matters

This approach fills the "Blank Spots." Where other AVMs return an error message or a hallucinated value, Resideline builds a logical, defensible valuation based on the best available evidence. It is not just about finding data; it is about finding the right data.

Stop relying on outdated radius searches. Experience the future of real estate appraisal with Resideline.