Gannaway Construction

About Us

Gannaway Construction is the leading general construction company serving Marshalltown, Grinnell, Brooklyn, Newton, Grundy Center, Tama, State Center & surrounding communities. We specialize in whole home renovations, roofing, siding, sheds and so much more.

We understand that every home is unique and that renovation projects can be a significant investment. Our friendly and knowledgeable team is ready to answer any questions you may have and help you turn your dream home into a reality. We pride ourselves in delivering above and beyond our clients expectations. For more information, contact our team at Gannaway Construction.

Our Story

Matt Gannaway is the proud owner of Gannaway Construction, a premiere construction company in Gilman, Iowa since 2021. Matt is very knowledgeable about all aspects of construction, with years of experience under his belt. He started out in the industry at the age of 16 and quickly grew to love it. At Gannaway Construction, we specialize in roofing, siding, and decking. We believe in providing our clients with the highest quality product possible while also giving back to our community. We hire locally, buy locally, and donate to local schools. We have an incredible team of roofers and construction experts, and we are ready for any challenge that comes our way. We are passionate about what we do, and we want to put our skills to use on your next project!

We understand that when you invest your hard-earned money into a new home or building project you want it done right the first time, and that is exactly what we will do for you. We pride ourselves on being able to provide affordable and speedy construction services for any project you may have. We take great care to ensure that your project is completed efficiently, so you can enjoy your new space or property as soon as possible.

Our goal is to provide our clients with a finished product that will last for years, withstand any kind of weather, and be aesthetically pleasing. We are committed to building long-lasting relationships with our clients by exceeding their expectations on every project we undertake with them.

We have a team of experienced professionals who are dedicated to providing high-quality service to our clients. Our team has been working in this industry for many years, and we know exactly what it takes to get the job done right. We believe that attention to detail is one of the most important aspects of any project, and we work hard to ensure that each customer gets exactly what they want from their building experience.

If you're looking for a construction company that can take care of all of your roofing, siding, and decking needs, look no further than Gannaway Construction. We're here to help with any project big or small. Whether you need a new roof or just want to freshen up the paint on your siding, we will work with you to create a plan that fits your budget and meets all your needs. Give us a call at 641-485-0267 and let us show you what we can do!

Areas Served

Our Certifications

GAF Certified Contractor
GAF Exterior Portfolio Alliance Window Systems Tillcor Roofing Fibron Decking Certified
Insured
Licensed
GAF Master Elite Certification

Languages Spoken

English
Spanish

What We Offer

Our Specialties include:

Whole Home Renovations
TruLog Siding - Gold Star Premier Installer in the State of Iowa
GAF Master Elite Certified

Our Services include:

Log Home Specialist
Roofing
Siding
Decks
Composite Decking
Gutters
Windows
Doors
Drywall
Concrete
Kitchen and Bath Remodels
Insurance Work
Interior and Exterior Painting

Our Brands include:

GAF
Exterior Portfolio
Alliance Window Systems
Tilcor
Fiberon
Westlake Royal
Versetta Stone
DaVinci Roofscapes
LP Smart Side

Testimonials

On 1/14/2026 Adam Wittkop had this to say:
High quality and fast service!

On 12/8/2025 Mike Guild had this to say:
Matt is great to work with and his crew did an excellent job stabilizing our deck and a couple other things. Get a quote. You’ll be glad you did.

On 11/17/2025 Chris DiNaso had this to say:
I hired Gannaway Construction to make some repairs to my deck. They let me know exactly when they could start which was within a couple of weeks. They started on the promised date and did a great job. The work looks wonderful and the price was even better. I highly recommend Gannaway Construction. I'll definitely be using them for all my house repairs! Testimonial written by Chris DiNaso on this site.

Contact Us

Gannaway Construction
Gilman, IA 50106
Phone: (641) 485-0267
Secondary: (206) 294-8375
Email: gannawayconstruction@hotmail.com

45 Mile Radius

Where To Find Us

Payment Types Accepted

Visa, MasterCard, American Express, Discover, Personal Checks, Debit Cards

Our Hours

Holiday Hours May Vary. Please Call For Details.

Monday: 8:00 AM - 5:00 PM
Tuesday: 8:00 AM - 5:00 PM
Wednesday: 8:00 AM - 5:00 PM
Thursday: 8:00 AM - 5:00 PM
Friday: 8:00 AM - 5:00 PM
Saturday: By Appointment Only By Appointment
Sunday: By Appointment Only By Appointment

News

🔨 Upgrade Your Home with Gannaway Construction!
Need a new roof, stylish siding, or a custom deck to elevate your outdoor space? We’ve got you covered! Our expert team delivers top-notch craftsmanship and durable materials to keep your home looking great and standing strong. Let us transform your house into the home you’ve always dreamed of—quality work, guaranteed!

For faster more immediate service please contact us through our website www.gannawayconstruction.com. Please click the CONTACT tab and fill out the prompts on that page with your name, phone number, address, and in the message box the project you would like a free estimate on.

Info

TruLog Product Catalog
Wood Grain Colors
GAF
Why Choose Master Elite?
Recent Projects

FAQ

Do you offer free estimates for your services?

Yes, we provide free estimates to help you understand the scope and cost of your project, ensuring transparency before you commit to any work.

Can you assist with insurance-related repairs and claims?

Definitely, we have experience working with insurance companies to efficiently manage repair work and claims related to home damage.

What materials do you use for decking?

We offer both traditional decking and durable composite decking options to suit your specific preferences and outdoor spaces.

Do you offer services for both interior and exterior projects?

Yes, our team handles a variety of interior and exterior projects, including drywall, painting, gutters, windows, and doors installation.

Can you help with home renovation projects like kitchen and bath remodels?

Absolutely, we provide expert kitchen and bath remodeling services, turning your home renovation dreams into reality.

How quick can you get to my project?

It can vary on your size of project and what you're looking to accomplish. Depending on the complexity and urgency, please give us a call so that we can provide you with a timeline and free estimate.

What all services do you offer?

As a general contractor we can handle all trades of work, from top to bottom we've got your home covered. If we can't do it, we will have a subcontractor that we trust that can help you with your next project.

Are you licensed & insured?

Absolutely. We highly recommend you always go with a provider who carries licenses and insurances. Please give us a call today!

Do you offer any warranties?

It can vary, typically we offer 1 year workmanship warranty. Beyond that will coordinate with the manufacturers we work with for extended warranties on your next project.

What areas do you serve?

We are the primary contractor serving and specializing in Brooklyn, Conrad, Gladbrook, Grinnell, Marshalltown, Newton, State Center & Tama. Any city located within or around Grundy County, Marshall County, Poweshiek County, Jasper County, Story County, Tama County - we can help!

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