As families grow and lifestyles evolve, many homeowners are turning to home additions as a smart alternative to moving. Whether you're adding a new bedroom, expanding your kitchen, or building a sunroom, home additions can greatly improve comfort, functionality, and property value.

But one of the most common questions homeowners have is: How much does a home addition actually cost? In this guide, we’ll break down the factors that influence pricing and help you plan for a successful project.

Why More Homeowners Are Choosing to Build Instead of Move

Home prices and interest rates continue to rise in many areas, making it less attractive for families to buy new. In places like Bedford, NH, homeowners are finding that staying in place and building home additions is often more affordable and convenient than purchasing a larger home.

Adding space tailored to your needs not only enhances your quality of life but also increases your home’s resale value. It’s an investment that pays off both now and in the future.

Average Cost of a Home Addition

The cost of a home addition can vary significantly depending on the size, type, and complexity of the project. On average, a small room addition of around 100 to 200 square feet may cost between $20,000 and $50,000. A mid-sized addition ranging from 200 to 400 square feet typically falls between $40,000 and $80,000. Larger additions of 400 square feet or more can easily exceed $75,000, reaching upwards of $150,000 or more for custom projects. If you're considering a second-story addition, expect the investment to start around $100,000 and potentially go well beyond $250,000 depending on structural requirements and finishes. Additions like in-law suites or attached garages can range from $60,000 to $120,000 or more. These figures are estimates and may vary based on material choices, location, labor costs, and whether plumbing, electrical, or HVAC systems are involved. To get a precise quote, it’s best to consult with an experienced contractor who can assess your specific needs.

Key Factors That Affect Cost

1. Size and Scope

The bigger the addition, the more materials and labor it will require. A single-room bump-out is far less expensive than adding a second story or a full apartment.

2. Foundation and Structural Work

If the addition requires new foundation work, expect higher costs. Adding to a second floor may also require reinforcement of the existing structure.

3. Plumbing, Electrical, and HVAC

Additions that include bathrooms or kitchens will cost more due to plumbing and appliance installation. Extending HVAC systems also adds to the price.

4. Finishes and Materials

The type of flooring, countertops, siding, and windows you choose can have a major impact. High-end finishes will increase your total investment.

5. Permits and Design Fees

You'll need building permits and possibly architectural drawings. These professional fees should be factored into your budget.

Maximizing Value with the Right Contractor

Choosing an experienced contractor is key to making the most of your investment. A skilled builder ensures the job is done right, on budget, and up to code.

Southern New Hampshire Remodeling specializes in customized home additions, helping homeowners expand their space efficiently while boosting long-term value.

Final Thoughts

Home additions are one of the most impactful upgrades you can make to your property. Whether you're looking for more space for your family or planning for future resale value, a well-executed addition can meet your goals while staying within budget. Always work with a trusted professional to get accurate pricing, proper permits, and high-quality results.

FAQs

1. How long does a typical home addition take?
Most additions take between 2 to 6 months depending on the size and complexity of the project.

2. Do I need a permit for a home addition?
Yes, building permits are almost always required. A licensed contractor will usually handle this for you.

3. Is it cheaper to build up or out?
Building out is usually more affordable, but it depends on your lot size and structural limitations.

4. Will a home addition increase my property taxes?
Yes, increasing your home’s square footage can raise its assessed value and property taxes.

5. Can I live in my house during the addition?
In most cases, yes — though you may need to adjust your living arrangements depending on the scope of the work.