How Much Does It Cost to Build a Foundation in Denver? [2026 Data]

The cost of a new foundation in Denver, Colorado, runs between $3,521 and $8,370, with the average Denver homeowner spending $5,945 to lay a foundation. That’s roughly 29% less than the national average cost of laying a foundation. Prices largely depend on the size of the foundation and type of foundation, among other factors.

Foundation Cost Factors 

Several factors impact the cost of laying a foundation in Denver, Colorado—most notably, the size and type of foundation. Let’s take a closer look at these cost factors.

Size

Most foundation projects are charged by the square footage, which means you're paying for the area of that space. On average, laying a foundation costs about $3.50 to $26 per square foot, so most homeowners pay anywhere between $3,500 and $26,000 for a 1,000 square foot foundation.

Materials

The material you’ll need for a foundation project will impact its cost. You’ll pay more in material for a basement foundation than a monolithic slab. Besides foundation type, other material costs you’ll need to consider are waterproofing, insulation, and a drainage system. 

Type or Style

Your area’s climate and soil content will call for different types of foundations. Basements and crawl spaces are a different type altogether, as these require extra excavation and supports. Below are the different types of foundations and what they could cost.

Concrete Slab Foundation Cost

A concrete slab costs about $3,700 to $14,900, based on the size and project. The area, soil type, and structural needs will dictate which type you need.

Monolithic Slab Foundation

A monolithic concrete slab goes for an average of $3,700 to $9,225. This is quicker and easier than laying other foundations, so it brings your labor costs down considerably. However, it won’t work unless the ground is level throughout your property and the soil is well-compacted. For areas requiring builds to rise above a floodplain, it’s not a good choice.

Stem Wall Foundation

You’ll likely pay between $4,975 and $14,900 for a stem wall foundation. More excavation, materials, and labor are involved, so they carry a higher price tag than a monolithic concrete slab.

Pier and Beam Foundation 

Also known as post and pier foundations, pier and beam concrete foundations cost an average of $5,675 to $10,650, or about $4.25 to $8.50 per square foot, with a steel l-beam cost at the higher end of this range.

These were common before builders started constructing concrete slab-on-grade foundations in the 1960s. They’re still a good choice for moisture- and flood-prone areas, as they elevate and provide excellent airflow to prevent mold.

Pile Foundation 

Piles cost about $14 to $43 per linear foot, with an average minimum cost of $19,875. These are good when the soil isn’t fit to support a concrete foundation. Prices vary by material:

Basement Foundation 

To pour a basement concrete foundation costs anywhere from $17,050 to $105,075. This price depends on the type of basement foundation you need and the size of your project. However, basements are the most common type of foundation in Denver—and they’re also among the most expensive.

Here are some factors that will affect the price:

• Waterproofing and drainage systems are important for keeping your basement hangout space dry.

• Finishing the basement costs a lot more than leaving it unfinished, but it improves your home’s resale value.

• Doors and windows are something to consider, as you’ll need exit windows for code compliance.

Crawl Space Foundation

Crawl space foundations cost around $7,100 on average, but they can approach $14,200 for bigger projects. Since there isn’t a need to jack up your home or do extensive excavation, crawl space foundations will cost a lot less than a basement build. They allow access to machine systems for important repairs.

Garage Foundation 

A garage foundation costs $1,425 to $4,975 on average and depends on if you need a one-, two-, or three-car garage built. It can be worth the investment since it can add to your resale value. 

Shed Foundation

A poured concrete foundation for a 10-by-16-foot shed will cost about $700. You may opt for a gravel pad for your shed instead, which will cost about $150 to $225 for a 10-by-16-foot shed.

Block Foundation 

A block foundation is stacked cinder blocks cemented using mortar and reinforced with rebar and are best for larger homes. On average, homeowners spend $8,175 to $13,500 or $6.50 to $10.75 per square foot on this foundation.

Foundation Pro Costs

Labor makes up roughly 40% to 60% of the total cost to build a foundation for a new home or an add-on to an existing home. For foundation costs in Denver, that means labor accounts for anywhere from $1,400 to $5,025 for typical foundations.

Among the pros required for this project are Denver-based foundation contractors, architects, and structural engineers. Consult your foundation contractor to get an accurate estimate based on the specifics of your project.

Additional Pros to Consider Hiring

If you’re building a foundation for a new house, you’ll likely hire a building contractor who oversees the entire project. That general contractor may be responsible for hiring your foundation pro, structural engineer, and several subcontractors, from plumbers and carpenters to electricians and HVAC technicians. The number of sub-contractors will depend on the size and scale of your foundation project.

Permits and Inspections

Building a new house or adding an addition to your existing house involves a lot of labor costs beyond just the foundation. As far as the foundation is concerned, however, you’ll need multiple permits and inspections in Denver, including for excavation and structural reviews. Your contractor can help you obtain and arrange for these and will review all necessary permit and foundation inspection costs.

Does a New Foundation Increase Home Value?

The existence of a foundation doesn’t increase the value of your home on its own. After all, permanent, modern homes in Denver require a foundation, so home buyers simply expect their home to come with a foundation.

However, the type of foundation you choose when building or expanding your home can absolutely impact the value of your home, as some foundations are more durable and thus more valuable. Basements, for instance, tend to offer the most value, as they offer additional storage space or, if finished, living space. Other high-value foundation types in Denver include pier and beam, which are great for Colorado’s soil conditions, and crawl spaces.

How Angi Gets Its Cost Data

Home is the most important place on earth, which is why Angi has helped more than 150 million homeowners transform their houses into homes they adore. To help homeowners with their next project, Angi provides readers with the most accurate cost data and upholds strict editorial standards. We survey real Angi customers about their project costs to develop the pricing data you see, so you can make the best decisions for you and your home. We pair this data with research from reputable sources, including the U.S. Bureau of Labor Statistics, academic journals, market studies, and interviews with industry experts—all to ensure our prices reflect real-world projects. 

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