Complete Guide to Home Addition Costs in Houston

How Much Do Home Additions Cost in Houston?

Real additions. Real prices. Houston homeowners, start here.

Average Houston Home Addition Cost?

The cost of a home addition in Houston typically ranges from $150 to $300 per square foot, depending on the size, scope, and finishes you select. Smaller projects like bump-outs or sunrooms may start around $40,000–$60,000, while larger additions, such as a full master suite or second-story build, can exceed $150,000–$250,000. Houston homeowners should also budget for design, engineering, permits, and finishes, which can significantly impact the final price.

EVERYTHING YOU NEED TO KNOW ABOUT HOME ADDITIONS:

Welcome to Romo Construction & Design

Welcome to Romo! Whether you’re just starting to explore a home addition, full remodel, attic conversion, or custom project, you’ve come to the right place. As a turnkey Design-Build firm, we guide you through every step, from initial concepts and 3D renderings to architectural plans and construction. Our goal is to create stunning, functional spaces that fit your lifestyle. Let’s bring your vision to life with expert craftsmanship and a seamless process.

Factors That Influence Home Addition Cost

Several key factors determine the total cost of a home addition:

Size & Square Footage – Larger spaces require more materials and labor.
Type of Addition – Kitchens, bathrooms, and second stories are more complex (plumbing, HVAC, structural work).
Design & Materials – High-end finishes, stone exteriors, or custom cabinetry increase investment.
Permits & Engineering – The City of Houston requires architectural plans, engineering approvals, and inspections, all of which add costs.
Site Conditions – Soil, foundation type, and access to your property can affect excavation and construction costs.

Popular Types of Home Additions in Houston

Master Suite Additions

Adding a private master suite with a bedroom, bathroom, and walk-in closet is one of the most popular upgrades. Costs generally range $100k–$200k+ depending on luxury level.

Kitchen & Dining Expansions

Extending your kitchen or dining area allows for open layouts and modern upgrades. Expect ranges from $60k–$150k.

Second-Story Additions

Building up instead of out maximizes your lot space. These projects can run $175k–$300k, depending on structural needs.

Garage Conversions & Attic Build-Outs

Transform unused space into functional living areas. These are often more budget-friendly options, starting around $40k–$80k.

Home Addition Design & Planning

Before construction begins, every home addition requires detailed planning. At Romo Remodeling, we start with architectural drawings, 3D renderings, and engineering analysis to ensure your new space is both functional and structurally sound. Proper planning not only saves time and money during construction but also helps with HOA approvals, city permits, and accurate budgeting.

Why Choose Romo Remodeling
for Your Home Addition?

Years of Proven Experience – We’ve delivered high-quality home additions and remodels across Houston for over a decade, combining expertise with reliability.
Tailored Design-Build Solutions – Every project starts with your vision. From 3D renderings to detailed plans, we design additions that fit your lifestyle, budget, and home’s architecture.
Premium Craftsmanship – Our team uses top-tier materials and trusted professionals, ensuring your new space is built to last.
Transparent Communication – We provide clear timelines, upfront pricing, and regular updates, so you’re never left guessing.
Complete Project Management – From planning and permits to engineering, construction, and final walkthrough, Romo Remodeling handles every step under one roof.
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Frequently Asked Questions (FAQs)

How do you integrate home additions with my existing structure?

Our team conducts a thorough assessment of your current layout and works closely with you to design an addition that blends seamlessly with your home’s architecture. We focus on maintaining a cohesive look and optimal functionality.
How do home additions impact the value of my property?

A well-executed home addition not only enhances your living space but can also significantly boost your property’s market value. By adding functional, high-quality spaces, your home becomes more appealing to future buyers.
Can I see examples of past home additions you’ve completed?

Absolutely. We’re proud of our portfolio and would be happy to show you examples of previous projects that demonstrate our expertise and commitment to quality craftsmanship.

What types of home additions do you offer?

We offer a wide range of home addition services—from expanding living spaces, adding extra bedrooms or offices, to custom sunrooms and outdoor living areas. Our goal is to tailor each project to fit your unique needs and enhance your home’s functionality and value.
How long does a typical home addition project take?

The timeline varies depending on the scope and complexity of the project. Generally, most home additions can take anywhere from a few months to over a year. We provide a detailed schedule during the consultation phase to help set your expectations.
Do you handle the permitting and regulatory requirements?

Yes, our full service approach includes managing all permits and ensuring compliance with local building codes and zoning regulations. We handle these details to avoid delays and ensure a smooth process.

Our Gallery of Work

Get inspired by the spaces we’ve transformed—each one designed, built, and finished by the Romo Remodeling team.

Why does cost vary so much?

General Contractor: General contractors usually charge between 10% to 20% of the project's total construction costs. This is a standard practice across the industry.
Architect: The rate for architects typically falls within the 5% to 10% range of the project cost, consistent with your information.
Structural Engineer: Structural engineer rates can vary. They generally charge between $100 to $200 per hour for their services, which includes tasks like home inspections, foundation inspections, and drafting plans.
Plumber: Plumbers can charge anywhere from $45 to $200 per hour. This wide range depends on the complexity and specifics of the plumbing work involved in the project.
Electrician: Electricians typically charge between $50 to $150 per hour.
Carpenter: Carpenters generally have rates between $75 to $100 an hour.
Painter: Painters can have a broad range of hourly rates, from about $20 to $100 per hour. This variance largely depends on the scope and scale of the painting job.
HVAC Expert: HVAC experts' hourly rates are usually in the range of $50 to $100 per hour.

What's the cost of labor?

General Contractor: General contractors usually charge between 10% to 20% of the project's total construction costs. This is a standard practice across the industry.
Architect: The rate for architects typically falls within the 5% to 10% range of the project cost, consistent with your information.
Structural Engineer: Structural engineer rates can vary. They generally charge between $100 to $200 per hour for their services, which includes tasks like home inspections, foundation inspections, and drafting plans.
Plumber: Plumbers can charge anywhere from $45 to $200 per hour. This wide range depends on the complexity and specifics of the plumbing work involved in the project.
Electrician: Electricians typically charge between $50 to $150 per hour.
Carpenter: Carpenters generally have rates between $75 to $100 an hour.
Painter: Painters can have a broad range of hourly rates, from about $20 to $100 per hour. This variance largely depends on the scope and scale of the painting job.
HVAC Expert: HVAC experts' hourly rates are usually in the range of $50 to $100 per hour.

Ready to Expand Your Living Space?

Let’s bring your vision to life—whether it’s a new room, a second story, or a custom addition. From design to build, we handle it all for a seamless, stress-free experience.

Or fill out the form to schedule your free in-home consultation.

Let's chat about your project!