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What Is the Sales Comparison Approach?

2025/09/27
16by9 New Blog Post 2

Step-by-Step: How Brokers Use the Sales Comparison Approach

1. Define the Subject Property

The process begins with gathering detailed information about the subject tract:

  • Acreage (gross and net)
  • Location and access (proximity to highways, paved vs. dirt roads)
  • Topography and soils
  • Timber volume and age classes
  • Improvements (fencing, barns, cabins, utilities)
  • Zoning and land use restrictions
  • Highest and best use (e.g., recreation, timber, agriculture, development)

A site visit is often critical at this stage, allowing the broker to observe factors not always evident in maps or aerials, such as wet areas, viewsheds, or access quality.

2. Identify Comparable Sales

The next step is selecting recent, relevant sales of similar land tracts. Brokers typically look for:

  • Sales within the last 12–24 months
  • Similar acreage range and land use
  • Geographically close properties (same county or region)
  • Transactions involving arm’s-length buyers and sellers

They draw from a variety of data sources, including:

  • Internal sales databases and company records
  • Public deed records and tax assessor data
  • MLS or land-specific listing services
  • Networking with other brokers and appraisers

3. Analyze the Comparable Sales

Each comparable sale is then analyzed in detail:

  • Price per acre is calculated.
  • Brokers note how features such as road frontage, utilities, timber value, or conservation easements may have impacted the sale price.
  • Adjustments are made to reflect differences from the subject property. For example:
    • If the comp had a well and septic system but the subject doesn’t, a downward adjustment may be made.
    • If the subject property has superior access or better timber, a premium might be applied.

This step is both analytical and judgment-based, requiring knowledge of local buyer behavior and land value trends.

4. Determine a Value Range

After adjustments are applied, brokers narrow down the value range per acre and apply it to the subject property. For example:

  • Comparable 1: $3,800/acre (after adjustment)
  • Comparable 2: $4,100/acre
  • Comparable 3: $4,000/acre

The subject property might reasonably be valued between $3,900 and $4,100 per acre, depending on which comps the broker gives more weight to.

5. Provide a Broker Price Opinion Report

The final BPO includes:

  • A summary of the subject tract
  • A map showing location and surrounding land uses
  • A table of comparable sales
  • Notes on adjustments and valuation logic
  • A final estimated value or value range

The report may be informal (a letter or internal memo) or formatted like an appraisal-style report, depending on the client’s needs.

Why the Sales Comparison Approach Works for Land

Unlike income-producing properties where a capitalization rate might be applied, most rural land does not generate consistent income, it could be 15 years between income events. And cost-based valuation often doesn’t reflect market behavior for unimproved land. That’s why the sales comparison approach is the gold standard for valuing land—it reflects what buyers are paying for similar properties.

Final Thoughts

A well-researched Broker Price Opinion can provide landowners, investors, and lenders with confidence and clarity. It’s not just about plugging numbers into a formula—it’s about understanding the market, land use potential, and the subtleties that make each tract unique.

For landowners considering a sale or buyers evaluating an opportunity, a BPO by a qualified land broker using the sales comparison approach is one of the most practical tools available to assess value in today's rural land market.

Need a BPO for Your Property?
If you’re considering selling or investing in rural land, reach out to one of our professional land brokers at AFM Real Estate who understands your local market and can provide a customized Broker Price Opinion to help you make informed decisions.

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Frequently Asked Questions

  • The sales comparison approach estimates a property's value by comparing it to similar properties that have recently sold in the same market area, known as comparable sales or comps. Brokers gather detailed information about the subject property, identify recent arm's-length sales of similar tracts, and then adjust for differences such as size, location, access, timber value, and improvements. After those adjustments, brokers arrive at a credible market value range expressed as a price per acre.

  • A broker begins by collecting information on the tract's acreage, location, and access quality, as well as its topography, soils, timber volume and age classes, improvements like fencing or cabins, zoning restrictions, and highest and best use. A site visit is often a critical part of this step because it allows the broker to observe factors not always visible on maps or aerials, such as wet areas, viewsheds, or road conditions.

  • Brokers typically look for sales that closed within the last 12 to 24 months, involve similar acreage and land use, and are located in the same county or region as the subject property. They draw from sources such as internal sales databases, public deed records, tax assessor data, MLS or land-specific listing services, and networking with other brokers and appraisers. Only arm's-length transactions between unrelated buyers and sellers are used, to ensure the prices reflect true market behavior.

  • Each comparable sale is analyzed in detail, and adjustments are made to account for differences between that sale and your property. For example, if a comparable sale included a well and septic system that your property lacks, a downward adjustment may be applied to that comp's price. Conversely, if your property has superior access or better timber, a premium might be added. This process combines analytical methods with knowledge of local buyer behavior and land value trends.

  • Most rural land does not generate consistent income, so income-based valuation methods that rely on a capitalization rate are difficult to apply. Cost-based valuation often does not reflect how the market actually behaves for unimproved land either. The sales comparison approach directly reflects what buyers are paying for similar properties, making it the most market-grounded method available for rural land.

  • A Broker Price Opinion, or BPO, includes a summary of the subject tract, a map showing its location and surrounding land uses, a table of comparable sales, notes on adjustments and valuation logic, and a final estimated value or value range. The report can be formatted as an informal letter or structured like an appraisal-style document depending on the client's needs. Landowners considering a sale, buyers evaluating an opportunity, and lenders can all use a BPO to make more informed decisions about rural land.