Land vs Building Value Calculator

The Land vs. Building Value Calculator helps you accurately allocate a property's purchase price between its land and building components, a crucial step for optimizing depreciation deductions. As of 2026, understanding this split is more important than ever for maximizing your tax benefits on investment properties, especially with potential changes in depreciation schedules. This tool ensures you establish a proper cost basis for your building, allowing for accurate write-offs over its useful life.

Our calculator primarily utilizes the assessed values provided by local tax authorities, which often differentiate between land and improvements. We calculate the land value percentage by dividing the assessed land value by the total assessed property value. This percentage is then applied to your actual purchase price to derive the land value, with the remaining portion allocated to the building. In cases where assessed values are unavailable or deemed inaccurate, we recommend obtaining an appraisal that specifically allocates value.

A common mistake is simply using a generic 20% land / 80% building split; this can lead to under-depreciation or, worse, IRS scrutiny. Always use the most accurate available data, preferably from your property's tax assessment or a professional appraisal. Remember that land is not depreciable, so over-allocating value to it reduces your potential tax savings. Also, keep records of your valuation methodology for audit purposes.