Home Addition Cost in Tampa [2025 Data]

If you’re looking to add square footage to your Tampa home, building an addition can provide the exact kind of extra living space you need. Building a home addition in Tampa costs an average of $43,792, with most homeowners paying between $22,452 and $65,133. The cost of an addition depends on the size and type, whether you build up to another story or out on ground level, and what types of materials you choose.

Home Addition Cost Factors 

The cost of adding on to your Tampa home depends on a range of factors, from addition size and type to the materials you use. We break down some of the most common contributing factors to home addition cost and how you can expect them to affect your budget. 

Size

Home additions cost between $60 and $180 per square foot if you’re building out and between $250 and $450 per square foot if you’re building up. The cost to add a 10x10 room to a house costs an average of $12,000 if you build out and around $35,000 if you build up. The size of your addition will also affect how long building the addition takes, which can also cause your labor fees to increase for larger projects.

Where in those ranges your total falls also depends on the complexity of the room and its finishes. For example, adding a bathroom will often cost more than a bedroom since it requires additional plumbing and electrical work.

Materials

As you can imagine, it takes many kinds of building materials to complete a custom home addition. Material prices vary widely, so your price could push closer to $65,133 if you choose luxury or high-end materials at each step of the way.

Framing Materials Cost:

Insulation Materials Cost:

Roofing Materials Cost:

Flooring Materials Cost:

Siding Materials Cost

Type

The cost to add on a room varies based on the type and size of the room you’re building. Rooms like kitchens and bathrooms require plumbing work that a bedroom doesn’t, while an unfinished attic home addition may not require electrical or HVAC work that a bedroom needs.

The cost per square foot for your home addition will vary based on utilities and the finishes required for how you plan on using the extra square footage. Adding a room above your garage will have different costs and requirements than adding a mudroom, so it’s important to take how the space will be used into consideration when determining your budget.  

Site Prep

On average, site prep for a home addition costs between $1,500 and $5,000. You may not need any site prep in some cases, while other home addition projects may require grading land, demolishing concrete patios, removing trees, and other work that can add to your total. 

Permits

Before you build your home addition, you’ll need a permit from Tampa’s Construction Services Division. Your general contractor or homebuilder will usually pull any necessary permits, but it’s ultimately your responsibility as the homeowner to ensure all work is properly permitted, so confirm that you have all required permits before construction starts. Permit fees vary based on the type and scope of the project, but expect to pay between $400 and $2,000 for most home addition building permits.

Home Addition Pro Costs

Home Builder Pro Costs

Labor costs for a Tampa Bay homebuilder or general contractor will cost about 10% to 20% of your total project costs, and labor costs in general will account for 40% to 60% of your total spend. A qualified contractor will coordinate your building project, hire and manage subcontractors, answer your home addition questions, and keep your project on schedule and budget.

Additional Pros to Consider Hiring

Building an addition requires various pros to complete different kinds of work. Most additions require utilities, so you’ll need a plumber, electrician, and HVAC installer to set those up. Home builders may have roofers, carpenters, and painters on staff, but if not, you’ll need to bring those pros in. A structural engineer is a must for any addition project to ensure your plans are structurally sound and your addition is fully up to code. 

• Interior painter cost: $2–$6 per sq. ft.

• Roofer cost: $4–$11 per sq. ft.

• Electrician cost: $50–$100 per hour

• HVAC technician cost: $100–$250 per hour

• Plumber cost: $45–$200 per hour

• Carpenter cost: $75–$125 per hour

• Structural engineer cost: $200–$1,500

• Landscaper cost: $1,200–$6,200

Does a Home Addition Increase Property Value?

Home additions can add value to your property, providing a return on investment (ROI) of 20% to 50%, depending on the type of addition. Tampa lot sizes are about half the national average, so adding a second story to maximize space on a smaller lot can offer a high ROI compared to other types of additions. In Tampa, sunrooms are also a sought-after feature for prospective homebuyers, so adding a sunroom can make your home more competitive when it comes time to sell. 

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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