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How important is it to have perk test done when you buy vacant land that requires a septic system?

By
Real Estate Agent with Coldwell Banker Realty/Coldwell Banker Commercial NRT 30SA0872839 

How important is it to have perk test done when you buy vacant land that requires a septic system?

A perk test (percolation test) is critical when buying vacant land that requires a septic system. Here’s why:

  1. Determines Septic Feasibility – The test evaluates how well the soil drains, which affects whether a septic system can be installed and what type is needed. If the land fails, you may not be able to build.

  2. Affects Cost – If the soil doesn't drain well, you may need an expensive engineered system, significantly increasing development costs.

  3. Impacts Lot Value & Resale – Land that doesn't perk is worth much less, making it harder to sell in the future.

  4. Zoning & Building Approvals – Many municipalities require a passing perk test before issuing building permits.

  5. Negotiation Leverage – If a test hasn’t been done, you can negotiate contingencies or a lower price to account for the risk.
    How important is it to have perk test done when you buy vacant land that requires a septic system?

    "Are you looking for vacant land in
    Westchester or Putnam Counties?

    Now is the time to buy!

    Give me a call to find your land!

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    845-590-5488

    Thomas Santore

Show All Comments Sort:
Dennis Neal
Exp Realty of Southern California, Inc. - Big Bear Lake, CA
Your Home Sold in 21 Days or We Sell It For Free

Thomas, this is excellent advice for anyone considering purchasing vacant land. Highlighting the importance of a perk test is crucial for avoiding costly surprises and ensuring a successful building project. Thanks for sharing your expertise!

Feb 18, 2025 09:56 AM
Thomas Santore Lic Associate Real Estate Broker

Thank you,

Tom S

Feb 18, 2025 11:01 AM
Ed Silva, 203-206-0754
Mapleridge Realty, CT 203-206-0754 - Waterbury, CT
Associate Real Estate Broker

The perc test could be the most important test as no place to discharge household waste without proper soil conditions.

Feb 18, 2025 06:54 PM
Thomas Santore Lic Associate Real Estate Broker

Yes Thank You,

Tom S

Feb 19, 2025 05:47 AM
Mark Don McInnes, Sandpoint-Idaho
Sandpoint Realty LLC - Sandpoint, ID
North Idaho Real Estate - 208-255.6227

Much like the home inspections a perc test is so very important for a buyer of Vacant Land.  m

Feb 19, 2025 05:30 AM
Thomas Santore Lic Associate Real Estate Broker

Yes Thank You,

Tom S

Feb 19, 2025 05:46 AM