Learn how to buy land for a house. Understand the differences between raw and improved lots, secure the right financing, and manage site development costs.

Buying land requires evaluating utility access, zoning, and soil suitability before purchase. Because land loans often require 20-50% down, prioritize getting a professional survey and a percolation test. Always budget an extra 15% for unexpected site preparation costs, such as utility hookups and land clearing, to avoid project stalls.
“Most buyers underestimate the 'hidden' infrastructure costs of undeveloped land, which can easily exceed the purchase price of the dirt itself. Always prioritize a feasibility study over the visual appeal of the plot to ensure the site can support your planned home design.”
Buying land is the foundational step in building a custom home, requiring a different approach than purchasing an existing property. Purchasing land involves assessing site development, securing specialized financing, and confirming legal zoning requirements before you commit to a purchase agreement.
According to the National Association of Realtors, vacant land sales often require higher down payments—frequently between 20% and 50%—compared to the 3% to 20% typically required for traditional residential mortgages. Because land does not generate income and cannot be easily liquidated, lenders view it as a higher-risk asset.
Land is categorized by its level of development, which directly impacts the total cost and timeline of your build. Raw land is completely undeveloped with no access to utilities, roads, or sewage, while improved land features existing connections to municipal infrastructure and necessary permits.
Financing raw land is distinct from a standard mortgage because there is no structure to serve as collateral for the loan. Most buyers use a land loan, a home construction loan, or seller financing to fund the acquisition.
Before closing, you must conduct thorough due diligence to ensure the land is suitable for your specific construction plans. Failing to verify local regulations or environmental conditions can result in a property that is legally impossible to build on.
Calculating the true cost of land goes beyond the purchase price. You must account for "soft costs" and "hard costs" that arise before construction even begins. These include property taxes, insurance, permit fees, and the physical labor required to prepare the site for a foundation.
According to the National Association of Home Builders, site preparation costs—including clearing, grading, and utility hookups—can account for 10% to 25% of the total project budget. Always keep a contingency fund of at least 15% of your total budget to cover unexpected site issues, such as hitting bedrock during excavation or discovering a need for specialized drainage systems.
Buying an existing house is generally cheaper and faster than building from scratch. Building requires paying for land, site preparation, utility installation, and custom construction labor, which often leads to a higher cost per square foot compared to purchasing an established home.
A perc test, or percolation test, measures how quickly soil absorbs water. It is required by local health departments to determine if the soil is suitable for a septic system. If the soil does not drain properly, you may be unable to legally build a house on the property.
No, traditional mortgages are designed for homes that already exist. To buy land, you typically need a land loan or a construction loan, both of which usually require higher down payments and shorter repayment terms than standard 30-year residential mortgages.
Hidden costs include utility connection fees, land clearing, grading, soil testing, survey fees, impact fees, and property taxes. These expenses, often called site development costs, can add tens of thousands of dollars to your project budget before you even break ground on the house itself.
Finance Analyst
David Sterling is a personal finance writer covering mortgages, banking, insurance, and investing for Groundwork. He turns complex financial research into practical decisions.
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