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Top-Rated Window pros in Alton - Updated Nov 2026

Custom Windows Plus
5.0(
5
)
New Windows - 2New Windows - 2 - For BusinessNew Windows - 3-5+3 more

Serving Alton, IA and surrounding areas

Approved

In business since 2005

Free estimates

Credit card accepted

"Andrea was great to work with and she wasn't pushy like a few others I got quotes from. She knew the product and was able to answer questions. Brett and Aurelio was great when they came to install the windows. They explained how the process was going to go and how long it should take. Great group of people and would highly recommend them."
Historical Building
Close up - Before
Close up - After
Windows
Sibley Home

+17

Response time1 day
Response rate88%
Recommended by100%of homeowners
Avatar for Crawford's Services LLC
Crawford's Services LLC
5.0(
13
)
Window Cleaning

Serving Alton, IA and surrounding areas

Approved

In business since 2024

Free estimates

Small jobs welcome

"Crawford Services did a great job washing our house. It looks so nice now. We definitely recommend Crawford Services if you need your house, driveway, or roof washed."
Home in Spencer
Home in Spencer
After Photo
Before Photo
After

+2

Response time4 hrs
Response rate96%
Recommended by76%of homeowners
Avatar for Your Home Improvement Company
Your Home Improvement Company
3.8(
251
)
New Windows - 6 +New Windows - 3-5

Serving Alton, IA and surrounding areas

Approved (Corporate)

In business since 2004

Free estimates

Warranties offered

"The three man crew arrived at 8 am and got started immediately and installed 5 more windows(2nd time I hired them). They were finished by 12:30pm and were fast, efficient and very clean. they put down plastic and hauled away all the old windows and trash."
Windows
Windows
Doors
Doors
Siding

+14

Response time2 hrs
84 neighbors recently requested a quote
Recommended by80%of homeowners
Avatar for VAN ROEKEL CONSTRUCTION
VAN ROEKEL CONSTRUCTION
5.0(
2
)
Door or Window Screens - Install or Repair

Serving Alton, IA and surrounding areas

Approved

In business since 2015

Free estimates

Small jobs welcome

We are committed to excellence in every aspect of our business. We uphold a standard of integrity bound by fairness, honesty, and personal responsibility. Our distinction is the quality of service we bring to our customers. Accurate knowledge of our trade combined with ability is what makes us true professionals. Above all, we are watchful of our customers' interests, and make their concerns the basis of our business.

Response time9 hrs
Recommended by100%of homeowners
Avatar for Mad City Windows & Bath - Sioux Falls
Mad City Windows & Bath - Sioux Falls
New to Angi
New Windows - 2New Windows - 3-5

Serving Alton, IA and surrounding areas

Approved

In business since 2001

Free estimates

Warranties offered

To learn about Mad City Windows and its history, you need to start back in 1998 when our family-owned company first opened its doors and changed the face of home remodeling in Wisconsin. From the beginning, our business has been built on a foundation of friendship and trust and, in return, local homeowners have come to know they can place their trust in us. In order make certain that we consistently earn that trust, we are dedicated to ensuring the expert, seamless delivery of high-quality products and remodeling solutions to homeowners throughout our service area. \n \nToday, we expand our home remodeling expertise across Wisconsin, Minnesota, Iowa and Illinois. With over 50,000 completed projects, we take our 2+ decades of experience to serve the communities of Minnesota, Iowa and Illinois. They can expect our highest standard of service and professionalism.

Testimonial Letter(s)
Home Exterior + Bath
Home Exterior + Bath
Home Exterior + Bath
Home Exterior + Bath

+18

Gran Innovations
New to Angi
Window Cleaning

Serving Alton, IA and surrounding areas

Approved

Hello my names Christopher i am 23 tired of working for a boss that doesnt understand what goes into things when we install. I have finally turned over a new leaf and wanted to start dping things on my own. I have worked for a few different landscaping companys, i have done some demo work for family and friends, i also worked at thrasher for ahile working my way up to team lead. I just had a baby last year on December and i want to be able to see her grow! Thats why im here to get jobs that i want. I dont wanna work for a boss who has no idea how the stuff i install goes in. I want to be thats hands on boss that is for the customer. Tired of meeting quotas. I want to love what i do for work and believe you me i love getting dirty and getting the job done. I am only 23 but i am very hard wokring. Not affriad to try something new or get dirty! If you have any jobs small or big just let me know.

Avatar for A+ property servies
A+ property servies
New to Angi
Window Cleaning

Serving Alton, IA and surrounding areas

Approved

Free estimates

Emergency services offered

Warranties offered

A+ Property Services is a locally owned and operated business serving Spencer, Spirit Lake, Milford, and surrounding northwest Iowa communities. We take pride in providing dependable, professional property maintenance and cleaning services. Our services include power washing, soft washing, roof cleaning, window cleaning, carpet cleaning, parking lot maintenance, and more. We believe in quality workmanship, honest pricing, and making sure every customer is satisfied. When you hire A+ Property Services, you can count on reliable service and attention to detail.

1 neighbors recently requested a quote
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Windows FAQs, answered by experts

You can choose 5/8-inch plywood or 3/4-inch plywood—anything thinner than these sizes may not withstand the impact of debris propelled by strong winds or can be easily torn off by intruders. Remember that the durability of the wood board is crucial, particularly for safeguarding your windows during severe storms. The effectiveness of using wood boards for protecting the investment you made in your home relies on using the appropriate material and ensuring proper installation.

Depending on material and size, costs range from $300 to $800 per window.

Casement windows are more expensive than some other window types, such as single-hung or double-hung windows. However, casement windows are not the most expensive type of window. Bow and bay window costs tend to be the highest, because they involve multiple large windows that jut out from the exterior of the home.

Window replacement is typically always worth the cost, both from a money-saving standpoint and a comfort standpoint. If your windows are older and significantly damaged, a window replacement can actually save you money in the long term by improving energy efficiency. If your windows aren’t up to code, you may not really have a choice. 

Yes, you can enlarge windows in a brick house. Your masonry contractor will need to cut away exterior brick to make space for the larger window, and you may also need to consult a structural engineer to make sure the window is properly supported inside the frame of the house.

The Alton, IA homeowners’ guide to window services

From average costs to expert advice, get all the answers you need to get your job done.