Home Additions You Dream It, We Build It

Home Additions in Des Moines

Family-Owned Room Addition Contractors Serving Greater Des Moines Since 2009

For Des Moines homeowners who need more space but love where they live, a custom home addition is often a smarter move than relocating. You stay in your neighborhood, keep your established life, and gain a space designed around how your family actually lives. The challenge is finding a room addition contractor who understands local building requirements, manages the process cleanly, and delivers work that holds up.

That’s what 3 Sons Construction provides. We’re a family-owned, licensed, and insured home remodeling contractor based in Ankeny with over 20 years of combined construction experience. We guide homeowners through every stage of a home addition, from the first consultation through design, permitting, construction, and final walkthrough, with every project built to align with Des Moines building codes and integrate seamlessly with your existing home.

Choosing a local room addition contractor matters. We know the Des Moines housing market, we understand what Iowa winters demand of a structure, and we handle the permitting process so you don’t have to. Free estimates are available with convenient online scheduling, and flexible financing options mean you don’t have to put your project on hold.

Expand, upgrade, and personalize your home to match your lifestyle. Call (515) 498-5212 to schedule a consultation or contact us online.

Types of Home Additions We Build for Des Moines Homeowners

The right addition depends on your household’s priorities, your property, and your budget. We build a full range of addition types, each designed to address a specific need and built to last through Iowa’s demanding climate.

Common home addition types we build:

Extra Bedrooms or Bathrooms: Among the most requested additions for growing families, a new bedroom or bathroom improves daily function and can strengthen long-term resale value in the Des Moines market.
Kitchen Expansions: More open layouts suit the way Midwest families use their homes, for everyday meals, holiday gatherings, and the kind of cooking that requires real counter space. A kitchen expansion can make the heart of your home actually work for the people in it.
Home Office Additions: As remote work remains a fixture for Greater Des Moines households, a dedicated home office provides separation from the rest of the house and a quieter, more productive environment.
Garage Expansions: Iowa winters make covered storage a practical necessity. A garage expansion creates room for vehicles, tools, and seasonal equipment without sacrificing what’s already there.
Sunroom and Four-Season Room Additions: A well-built sunroom lets Des Moines homeowners enjoy natural light and outdoor views even when temperatures drop, extending usable space across every season.

Iowa Permitting & Frost Line Requirements

Home additions in Iowa require a building permit through the local municipality. Des Moines and surrounding cities each maintain their own submission and review timelines, and skipping permits creates real problems at resale, with insurers, and with lenders. Our team handles the permitting process so homeowners aren’t navigating city requirements on their own.

Iowa’s frost line runs 42 to 48 inches deep. Any addition with a foundation requires footings set below that depth to prevent structural movement during freeze-thaw cycles. This is a standard requirement, and it’s one of the reasons local construction knowledge matters. We build additions that account for Iowa soil and climate conditions from the ground up.

Hear What Our Clients Have to Say

Real Stories, Real Transformations

From kitchens to custom homes, we’re committed to exceeding expectations. Don't just take our word for it - see what our customers are saying!

“Quality Work”
“Ty just listened so much better than the other contractors I spoke with. He truly wanted to make our vision become a reality, and he and his team nailed it. We are in love with our new kitchen and couldn’t be happier with the result.”

- Luke L.
“Talented Team”
“Ty is a talented designer along with managing a crew of construction workers, plumbers, electricians, and others who are committed to doing the best job they can and meeting your expectations.”

- Liz H.
“Great Service”
“3 Sons Construction takes such great care of its clients, which is why my husband and I keep coming back to them for all of our house projects. 3 Sons just finished our kitchen reno and WOW. We are beyond thrilled with the result!”

- Laura M.

View All Reviews

Turn Your Dreams Into Reality

View Gallery

Our Home Addition Process in Greater Des Moines

Every project at 3 Sons Construction begins with a conversation about what you actually need. Before any plans are drawn or timelines set, we take time to understand your goals, how you use your space, and what the addition needs to accomplish. That clarity shapes everything that follows.

We handle design and construction under one roof. A design-build approach means the team drawing the plans is the same team building the addition, which reduces miscommunication, keeps decisions moving, and provides a single point of accountability throughout. Every addition is designed to match the architectural character of your existing home, with materials, rooflines, and finishes chosen to read as intentional, not tacked on.

A dedicated project manager oversees each project from start to finish, coordinating scheduling, managing communication, and keeping every stage on track. Our owners remain directly involved throughout, not just at the front end. That level of hands-on attention is part of what our clients consistently recognize about working with us.

We’ve built sunlit living room extensions, dedicated home offices, in-law suites, garage expansions, and guest rooms across Greater Des Moines. Each one started with a homeowner who needed something specific. The process runs from initial consultation through design, permitting support, construction, and final completion, with clear communication at every step so you always know where things stand.

Why Greater Des Moines Homeowners Choose 3 Sons Construction

Adding onto your home is a significant investment, and the contractor you choose shapes the outcome at every stage. 3 Sons Construction was founded in 2009, named after the owners’ three sons, and built on the belief that every project deserves the same care you’d bring to your own home. That foundation hasn’t changed.

Our team brings over 20 years of combined construction and remodeling experience to every project. We’re fully licensed and insured, providing professional accountability and protecting your investment from the first day of work through final completion. Our owners stay directly involved in every project, not handed off to a rotating crew, which means the people responsible for your addition are the same people you met at the start.

We’ve built strong relationships with local industry professionals across the Greater Des Moines area, and our clients frequently recommend us to family and friends based on the consistency of our work and our responsiveness throughout. When you work with a room addition contractor rooted in this community, that reputation is something we’re accountable to on every job.

Tailored Solutions & Pre-Construction Assessment

No two additions are the same, and no two properties present the same conditions. Before work begins, we conduct a comprehensive assessment of your property to evaluate grade, drainage, foundation proximity, and structural conditions. Issues discovered before construction starts can be planned around; the same issues discovered mid-build create delays and cost overruns. Our proactive approach keeps the process moving and minimizes surprises.

Every addition type requires careful planning around existing load-bearing walls, utility routing, and tie-in points to the existing structure. We account for all of it before the first nail is driven, and we ensure every aspect of the build complies with local regulations throughout construction.

Built on Trust & Quality

We’re licensed, insured, and back every project with a workmanship warranty and material warranties aligned with manufacturer guarantees. That coverage reflects our confidence in the work and our commitment to standing behind it after the project is complete.

Throughout construction, we keep you informed at every step, from initial plans through final touches. If something changes or a question comes up, we’re accessible and direct. Post-construction support is available to address any concerns after completion, because our goal is for you to feel as good about the process as you do about the result.

Start Your Home Addition with a Free Consultation

We offer free estimates with convenient online booking and flexible financing options so you can move forward without delay. Reach us by phone or through our online form to schedule a consultation.

Ready to add space that works for your family? Call (515) 498-5212 or contact us online to get started with a free estimate.

Frequently Asked Questions

How Do You Start a Home Addition?

The process starts with a consultation to assess your space, understand your goals, and identify what the addition needs to accomplish. From there, we move into design planning, local permitting, and construction from framing through finishing. Our team manages the full sequence so you have a single point of contact from the first conversation to the final walkthrough.

What Is the Most Affordable Type of Home Addition?

Converting existing space, such as a garage or attic, into finished living area typically costs less than a full structural addition because it minimizes new foundation work. For homeowners with usable but unfinished square footage, this is often the most cost-effective path to added living space.

How Long Does a Home Addition Take?

Most additions can be completed in three to six months depending on size and complexity. Simpler projects such as a bedroom or bathroom addition generally take less time than larger structural builds. We provide a clear timeline at the start and keep you updated throughout so there aren’t any surprises.

Do I Need a Permit for a Home Addition in Des Moines?

Yes. Home additions require a permit through the city’s building department. Our team handles the permitting process on your behalf so you aren’t managing paperwork or tracking local requirements. We stay current on Des Moines and surrounding municipality standards to keep every project compliant.

Can a Home Addition Increase My Home’s Value?

A well-designed addition that adds functional square footage, such as a bedroom, bathroom, or expanded kitchen, can increase property value in the Des Moines market. Buyers consistently seek livable space, and an addition that integrates cleanly with the existing home tends to perform well at resale.

What Are the Most Common Challenges During a Home Addition?

Matching the new addition to the existing home’s architectural style, navigating city zoning and permit review timelines, and uncovering hidden structural conditions once work begins are the most frequent challenges. Dedicated project management, thorough pre-construction assessment, and local experience all help minimize each of them.

Connect With Us

Let’s Hear Your Plans

First Name
Please enter your first name.
Last Name
Please enter your last name.
Phone
Please enter your phone number.

This isn't a valid phone number.
Email
Please enter your email address.

This isn't a valid email address.
Address
Please lookup your address.
Are you a new customer?
Please make a selection.
How can we help you?
Please enter a message.
By submitting, you agree to receive text messages from 3 Sons Construction at the number provided, including those related to your inquiry, follow-ups, and review requests, via automated technology. Consent is not a condition of purchase. Msg & data rates may apply. Msg frequency may vary. Reply STOP to cancel or HELP for assistance. Privacy Policy