How Much Does It Cost to Add a Second Story to Your Home in Minneapolis, MN? [2026 Data]

The cost to add a second story in Minneapolis, MN, averages $183,400, with projects ranging from $83,840 to $628,800. The size and type of your project affect complexity, particularly because full-size second-story additions often require foundational reinforcement, which can be complex and costly during winter in Minneapolis, MN. Outside of climate challenges, a competitive labor market for specialized trades can also influence labor costs.

Second-Story Addition Cost Factors 

The cost to add a second story in Minneapolis, MN, depends mainly on the size and type of your addition. Foundation reinforcement, landscaping, demolition, and finish level also play a role in the final price.

Second-Story Size

A second-story addition costs between $300 and $500 per square foot on average, but complex projects with high-end materials could reach even higher.

Addition Type

When you can picture your second-story design idea but can't quite put it into words, take a look at the costs by the type of addition. Every second story will be unique, but they typically fall into one of the following categories.

• Full second story: Building a full second story over your current layout comes with stiffer foundation requirements. You will also spend more on windows, roofing, insulation, and all of the homey features that round out your second floor.

• Partial second story: These additions are popular for their flexibility and comparatively lower costs. They may include a guest bedroom, an extra bathroom, or a flexible space for an office.

• Converting a vaulted ceiling into a second story: A vaulted ceiling adds lots of airy space to a house, but some see all that space and wonder if it could be used differently. If the ceiling is higher, it’s possible to convert it into a partial addition or loft to create usable space. 

• Dormer addition: A dormer is a triangular window space on top of a roof. Dormers cost less than full second-story additions but can expand an existing second story and give rooms more light and a bigger feel.

• Add a bonus room above the garage: When adding a room above a garage, square footage matters, but you'll also need to ensure the garage's structure can handle the extra weight. The second floor may also require additional insulation and vapor barriers.

Finish Quality

If you choose higher-end materials, such as stone siding or marble bathroom flooring, expect your costs to be higher than those of builder-grade materials. While some high-end materials reduce maintenance costs, many standard finishes are still durable and save money in the total project price.

Foundation Reinforcement

Depending on the structure of your existing home, your foundation may not be strong enough to support a second-floor addition. You'll want to hire a local structural engineer to evaluate your foundation and determine what you may need to strengthen it.

Foundation support work costs $5,000 to $14,500. Where you live, seasonal weather patterns, and ground characteristics all factor into the amount of work needed. 

Demolition

In many cases, building a second story requires that your contractor remove the roof and then open up walls and ceilings to reinforce your home’s framing. Removing a room costs an average of $1,310, and the cost to replace the roof when all is said and done usually falls between $6,315 and $13,810. While designers often work around existing chimneys, the price to remove a chimney for a second story adds an average of $4,715.

Adding a Staircase

Installing the main staircase in your home costs between $2,515 and $4,190, but high-end designs can reach $6,290. General contractors will often include this price in the second-story price estimate, as it's a crucial element of the design. However, the placement of your stairs, the design, and additional elements like carpeting can raise the price.

Landscaping

While not as common, the landscape surrounding your home may change when you add a second story. Construction equipment can damage your lawn, garden, and surrounding trees. Due to a shift in the shadows of your lawn, you may choose to move certain plants and flowers that sat in direct sun before the build. Professional landscaping costs between $50 and $70 per hour.

Temporary Housing

For safety purposes, you'll need to be out of your house during the construction of your second-story addition. A partial addition can take three to six months to complete, while a full second-story addition can take six to 12 months. If you don't have a nearby relative or a motorhome to stay in, factor in the cost of a rental into your project.

Home Builder Pro Costs

The cost to hire a local home builder in Minneapolis, MN, is based on labor rates, cost of living, taxes, and permit fees.

Labor

Hiring a local home builder in Minneapolis, MN, accounts for 40% to 60% of the total cost of a second-story addition. Home builders and general contractors also charge a fee of 10% to 20% of the total project cost. Those fees account for project management work, including tradespeople hiring and scheduling, permit coordination, purchasing materials, and inspections.

Labor costs are also influenced by the city’s competitive construction market and high demand for specialized trades across the Twin Cities, which can drive up rates and home builder overhead. With the area’s harsh winter, residential construction activity peaks in the spring and summer, and limited contractor availability can result in peak season pricing.

Some labor costs are related to the severe winters of Minneapolis, MN. Reinforcing foundations can be costly in the winter, since tradespeople typically use heated enclosures, insulated blankets, hot water mixing, and other strategies or materials to maintain a minimum temperature for concrete, all of which contribute to greater time and costs for labor.

Cost of Living

The cost of living in Minneapolis, MN, is 7% below the national average. While labor rates may be lower than in other metropolitan areas, the strong demand for residential construction in Minneapolis, MN, and specialized trades can still drive up construction costs.

Taxes

The combined sales tax in Minneapolis, MN, is about 9%. Labor for second-story additions generally isn’t subject to sales tax, since the home builder is considered the end consumer when purchasing building materials. They don’t charge sales tax on their services in most cases, but they do take taxes into account when calculating their total overhead and creating project estimates.

Permits

You’ll need to make sure you pull the proper building permits for your second-story addition. Your building contractor typically handles this, but the cost of a building permit starts at about $2,180 for the average second-story addition. The plan review fee is 65% of your total building permit cost, plus a state surcharge of 0.05% of the total project value.

If you come up against strict laws in your area and your permit is turned down, keep in mind that you may also need to pay for legal assistance. Historic homes, homeowner associations, and areas with strict air rights can be complex to understand without a legally trained eye.

Additional Pros to Consider Hiring

A second-story home addition is a big job, and your home builder will likely have to hire specialized crew members or subcontract to other professionals to get it done. They may hire professionals such as:

• Structural engineers: $110–$150 per hour

• Interior designers: $100–$500 per hour

• HVAC technicians: $75–$175 per hour

• Plumbers: $45–$200 per hour

• Electricians: $45–$95 per hour

Does Adding a Second Story Increase Home Value?

Adding a second story can increase your home's value in Minneapolis, MN, offering a 20% to 50% return on investment (ROI). The city's real estate market is increasingly competitive, largely due to limited lot sizes and limited availability in desirable neighborhoods. A second-story home addition lets you build upward and expand living space while preserving valuable yard space. Projects often see the strongest returns when they add more bedrooms or bathrooms.

How Angi Gets Its Local Cost Data 

To help homeowners plan their next project, Angi provides readers with carefully researched cost data and upholds strict editorial standards. We start with national average project costs, which we collect by analyzing competitor information, retailer material costs, and input from professional contractors. We then apply local price index data to calculate location-specific estimates that reflect what homeowners typically pay in their local area. To do that, we use data from the U.S. Bureau of Economic Analysis (BEA), including its Regional Price Parities (RPPs), which measure price differences across cities. This helps us account for differences in labor, materials, and overall cost of living, so estimates in higher- or lower-cost areas better reflect real-world local pricing.

Every estimate undergoes a thorough editorial review to verify accuracy, consistency, and alignment with observed market conditions.

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