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50+ Years
experience
Your Trusted Partner for Exterior Home Remodeling in Iowa
Midwest Construction has been a trusted name in exterior home remodeling since 1958, founded by Alex P. Despenas and maintained as a family-run business. Our commitment to quality products and professional installation has established us as Iowa's leading exterior remodeling company. With two showrooms in Grimes and Mason City, we offer energy-efficient windows, siding, sunrooms, doors, roofing, and gutters, all backed by industry-leading warranties.

Our team of VSI-certified production managers ensures every project is completed with precision and care, supported by a BBB A+ rating and recognition for integrity and ethical business practices. We prioritize customer satisfaction through transparent communication, expert craftsmanship, and a focus on lasting value for homeowners across Central Iowa.
Services
Windows Siding Sunrooms Doors Roofing Gutters Vinyl Windows Entry Doors Roof Replacement Gutter Protection
Details
  • Year established: 1958
Highlights and features
  • Recognized by the BBB with an Integrity Award for fair and ethical practices.
  • Family-owned since 1958, combining tradition with modern expertise.
  • VSI-certified production managers ensure industry-leading installation standards.
  • Exclusive dealer partnerships for premium product savings and quality.
  • Proven track record with 67 years of satisfied customers and local projects.
Associations and certifications
  • Better Business Bureau
  • Vinyl Siding Institute (VSI)
What people say
Great customer service Organized Professional Acted with integrity Installers did a great job
Services
Windows
Upgrade to energy-efficient windows that reduce utility bills and enhance curb appeal. Our professionally installed vinyl, wood-clad, and double-hung windows withstand Midwest weather while improving home comfort. Backed by industry warranties, our solutions combine durability with aesthetic appeal for lasting value.
Siding
Protect your home with high-performance vinyl, composite, or insulated siding. Our expert installation ensures durability against harsh weather, improved energy efficiency, and noise reduction. Options include historic restoration and modern designs to match any architectural style while boosting property value.
Sunrooms
Expand living space with custom all-season or three-season sunrooms. Designed for year-round use, our sunrooms feature seamless integration with existing structures, energy-efficient materials, and versatile layouts to create functional, light-filled extensions of your home.
Roofing
Ensure home protection with durable roofing solutions for storm damage repair or full replacements. Our materials meet industry standards for wind and water resistance, installed by certified professionals to extend roof lifespan and maintain structural integrity.
Gutters
Prevent water damage with seamless gutter installations and protective covers. Our systems channel water away efficiently, featuring low-maintenance designs and custom color options to complement your homes exterior while safeguarding foundations and landscaping.
Questions
What services does Midwest Construction offer?
We specialize in windows, siding, sunrooms, doors, roofing, and gutters for exterior home remodeling in Iowa.
Are financing options available?
Yes, we offer financing to help homeowners afford energy-efficient upgrades with flexible payment plans.
Is Midwest Construction BBB accredited?
Yes, we hold an A+ BBB rating and have received Integrity Awards for ethical business practices.
Do you provide warranties?
All projects include industry-leading warranties covering both products and professional installation.
What areas do you serve?
We serve Des Moines, Mason City, Altoona, Grimes, and surrounding Central Iowa regions.
Videos
Reviews (5)
Karen Evans
Apr 15, 2022 Report
5-star service from beginning to end. We're in the process of several renovation projects and hired Midwest Construction to replace 11 windows and two 3-window sliders. They were hands down, the most impressive contractor we've worked with. Sales (Lee Sykes) was professional, knowledgeable, and friendly. No pushy sales and he spent quality time going over everything with us. We were quoted 3-4 months for installation and were thrilled when it happened at 6 weeks. Installation was just as impressive. Joe was always on time, super efficient, professional and overall a really nice guy.

He is experienced, which we appreciated so we didn't have to babysit him (which is what we're doing with other contractors). Angela and Brent were our office contacts. They were always friendly and very responsive. Our only regret is that we didn't replace every single window in the house. We will definitely be using Midwest Construction in the future!
Mike Kuehn
Mar 11, 2021 Report
Midwest Construction replaced our first floor windows, front entry door and also replaced the shingles, siding, porch ceiling, and railing, and gutters. Troy worked with us to select products and colors and kept us informed of the progress each step. Their installers were thorough and careful around the house. We're thrilled with the results!
Linda Sheriff
Mar 08, 2021 Report
We had 29 windows installed in our house. Work was done on time and with great care and precision. Installer kept us informed about any concerns he found once our old windows were removed. He did some damaged window framing boards replacement when they showed past moisture damage. We would strongly recommend Midwest Construction for any of your home repair or construction needs.
Tanner Klinge
Jan 26, 2021 Report
This is the second time we have used Midwest Construction for our needs and just like the first time, it was a great experience. Matt our sales rep was awesome, factual, and very helpful in our selection process. The installers were clean, respectful, and efficient; we hardly noticed they were in our house removing and installing 5 windows. I would definitely recommend Midwest Construction.
Kelley Orman
Jan 09, 2021 Report
We met with Alex to discuss replacing windows and siding. After we sat and talked a bit he showed us where we could save money when replacing windows. He is very knowledgeable and could answers ANY questions we had, very good to work with. The gentleman that came to install the windows took no time all and they turned out FANTASTIC! you can't even see a space on the inside trim GREAT JOB. Now comes the siding crew - what can I say. they are all professionals. Roberto and his crew knew what to do and with expertise.

I had a few questions during the job and he knew what I wanted and how to deliver, The whole crew was very kind and courteous and kept the job clean and neat throughout the whole tear off and installation. Siding looks amazing. Super happy with our choice and the crew that was sent