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Home Additions in Louisville, KY

Expand your home without leaving the neighborhood you love.


Whether you need more room for family, a workspace, or simply want to enhance your lifestyle, a custom home addition can make it happen. We design and build additions that seamlessly blend with your existing home — with options for both high-performance Passive House quality and traditional construction.

Start Your Addition Today
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Blackwell Built is a Phius certified Passive house builder

PHIUS Certified Expertise

As a PHIUS Certified Builder, we bring advanced knowledge of Passive House and high-performance building techniques to every project. Even if you choose a traditional addition, our background in energy-efficient construction means you benefit from better insulation, air sealing, and comfort-focused design.

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Tailored to Your Needs

We understand that every home and homeowner is unique. That’s why we offer both high-performance and traditional construction options, allowing you to choose the path that fits your goals, budget, and timeline. Our team will help you weigh the pros and cons so you can make the most informed decision.

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Craftsmanship That Lasts

We’ve built our reputation on meticulous attention to detail and quality that stands the test of time. From the foundation to the finishing touches, every part of your addition is constructed to meet or exceed industry standards, ensuring durability and beauty for decades.

Construction Planners

Proven Process, Clear Communication

Home additions can be complex, but our process is designed to make it as smooth as possible. We keep you informed at every stage, answer your questions promptly, and ensure the worksite is safe and respectful of your home. Our goal is to minimize disruption and maximize satisfaction.

Blackwell Built serves the Louisville Ky and surrounding areas

Local Knowledge, Regional Reach

Based in Crestwood, KY, we know the building codes, climate challenges, and architectural styles of Louisville and the surrounding region. We also serve clients in Lexington, Cincinnati, and Nashville, bringing the same level of quality and service wherever we work.

Why Choose Us for Your Home Addition

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Second-Story Additions

When you need more space but don’t want to expand your footprint, building up is the answer. We specialize in adding full second stories or converting half-stories into functional living space, nearly doubling your home’s square footage. This is an ideal option for growing families or homeowners who love their lot but need more room.te the font, size and more. To change and reuse text themes, go to Site Styles.

Ready to Expand Your Home?

Let’s create a space you’ll love today and for years to come. Contact us to schedule your consultation and start planning your perfect home addition.

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Our Home Addition Process

Permits & Planning

We handle the details to keep things stress-free.

Final Walkthrough

Ensuring every detail meets our quality standards.

Blackwell Built home addition time line

Consultation & Design

We discuss your goals, budget, and style

Construction

Skilled craftsmanship with clear communication.

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Two Paths to Your Perfect Addition

High-Performance Additions

Built using Passive House principles, these additions offer exceptional energy efficiency, year-round comfort, and healthier indoor air. Expect super insulation, airtight construction, high-performance windows, and balanced ventilation — all designed to dramatically reduce energy bills and improve your living environment.

Traditional Additions

Quality, conventional construction for projects where ultra-high performance isn’t required. You’ll still get our attention to detail, durable materials, and a seamless match to your existing home — just without the extra cost of advanced Passive House upgrades.

Why Build a Home Addition?

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Stay in the neighborhood you love

When you add an addition to your home you make that space unique to your needs

Personalize your space

Adding a home addition by Blackwell Built adds value to your home

Increase your home’s value

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Improve comfort and efficiency

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