While property owners often confuse the two, a Perc Test and a Geotechnical Report serve entirely different purposes and cannot be used interchangeably for structural work.
### Perc Test (Percolation Test)
- Primary Purpose: Used solely for septic system design.
- Key Data: It measures the soil’s absorption rate in minutes per inch to determine the size of a leach field.
- Structural Relevance: It provides no data on whether soil can support a building. Building departments will not accept a perc test for foundation permits.
- Typical Cost: $100 – $300 per test hole.
### Geotechnical Report
- Primary Purpose: Evaluates soil bearing capacity for structural foundation design and repair.
- Key Data: Provides comprehensive technical details including soil type classification, density, groundwater depth, shear strength, and shrink/swell potential.
- Structural Relevance: Essential for calculating foundation dimensions and determining the depth and spacing of helical piers.
- Typical Cost: $800 – $3,500 depending on the project scope and site access.
In the Denver metro area, geotechnical reports must be prepared by a licensed geotechnical engineer and follow ASTM standards to ensure the long-term stability of the structure.
Related FAQs
-
What are the Most Durable Eco-friendly Countertops for a Kitchen?
Read More »: What are the Most Durable Eco-friendly Countertops for a Kitchen?When selecting durable and eco-friendly countertops for your kitchen, we recommend materials that are specifically suited for the dry climate in Centennial and the Front Range. The most resilient options for a sustainable remodel include: For homeowners seeking a complete…
-
Are Low-voc Paints and Stains Standard in Modern Kitchen Remodels?
Read More »: Are Low-voc Paints and Stains Standard in Modern Kitchen Remodels?Yes, selecting low-VOC paints and stains is a standard priority in modern, sustainable kitchen remodels, particularly for those aiming to create a wellness sanctuary home remodeling project. We prioritize these products because they off-gas fewer volatile organic compounds, which significantly…
-
Which Custom Home Builders Offer Low-interest Rate Financing in 2026?
Read More »: Which Custom Home Builders Offer Low-interest Rate Financing in 2026?We offer comprehensive support for homeowners looking to secure competitive financing for their 2026 custom home projects. Through our Design Build Services, we provide the single-point accountability and detailed documentation—including fixed construction schedules and written scopes of work—that lenders require…
-
How do Mortgage Rate Buydowns Work for New Construction Homes?
Read More »: How do Mortgage Rate Buydowns Work for New Construction Homes?When you are building a custom home, a rate buydown is a financing strategy that involves paying an additional upfront cost—often referred to as discount points—to secure a lower interest rate on your mortgage. This can be particularly beneficial when…
-
Is White Oak Cabinetry Still Popular for Modern Kitchens?
Read More »: Is White Oak Cabinetry Still Popular for Modern Kitchens?Yes, white oak remains a central pillar of modern kitchen design trends 2026. Its popularity stems from its ability to provide organic texture and warmth while maintaining the clean, simplified aesthetic favored in contemporary Centennial homes. We utilize white oak…
