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Verified Reviews for Home Building pros in Keystone, IA

*The Angi rating for Home Building companies in Keystone, IA is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Home Building needs.

*The HomeAdvisor rating for Home Building companies in Keystone, IA is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Home Building needs.

Last update on January 13, 2026

Find Home builders in Keystone

Avatar for Sentri Homes

Sentri Homes

New on AngiNew on Angi
•Approved Pro

Sentri Homes

New on AngiNew on Angi
•Approved Pro
3 years of experience
Free onsite estimate

Sentri Homes is a full-service contractor delivering high-end home additions, whole-home remodels, new custom builds, luxury kitchens, structural framing, roof replacements, and every major renovation. We assign a dedicated project manager to every job, deliver meticulous craftsmanship with clear communication, and back our work with an industry-leading warranty to ensure complete peace of mind on your largest investments. Our in-house team of licensed builders and master craftsmen consistently earns 5-star reviews by turning big visions into stunning, high-value homes—when you need one trusted partner who truly does it all, we’re the proven choice.

Sentri Homes is a full-service contractor delivering high-end home additions, whole-home remodels, new custom builds, luxury kitchens, structural framing, roof replacements, and every major renovation. We assign a dedicated project manager to every job, deliver meticulous craftsmanship with clear communication, and back our work with an industry-leading warranty to ensure complete peace of mind on your largest investments. Our in-house team of licensed builders and master craftsmen consistently earns 5-star reviews by turning big visions into stunning, high-value homes—when you need one trusted partner who truly does it all, we’re the proven choice.

Avatar for Environmental Testing & Research Laboratories, Inc

Environmental Testing & Research Laboratories, Inc

4.85(
347
)

Environmental Testing & Research Laboratories, Inc

4.85(
347
)
Customers say: True professional
Recommended by 93% of Angi customers
Recommended by 93% of HomeAdvisor customers

ETR Laboratories in an analytic laboratory with a broad range of commercial, industrial and individual clients. We provide analytic services using a wide variety of scientific methods including GC/MS, IC/MS, GIR, NMR and SEM equipment. We can do particle analysis, organic and inorganic chemical analysis and micro analysis on biological and other materials. Private water analysis is our specialty. Award winning. Additional DBA - Environmental Testing & Research Laboratories Inc, ETR Labs, ETR Laboratories.

"as advertised"

Nancy C on July 2018

ETR Laboratories in an analytic laboratory with a broad range of commercial, industrial and individual clients. We provide analytic services using a wide variety of scientific methods including GC/MS, IC/MS, GIR, NMR and SEM equipment. We can do particle analysis, organic and inorganic chemical analysis and micro analysis on biological and other materials. Private water analysis is our specialty. Award winning. Additional DBA - Environmental Testing & Research Laboratories Inc, ETR Labs, ETR Laboratories.

"as advertised"

Nancy C on July 2018

Avatar for Kinzler Construction Services

Kinzler Construction Services

5.00(
10
)

Kinzler Construction Services

5.00(
10
)
Customers say: True professional
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers

With 30 years of experience, Kinzler Construction Services is the right contractor for the job. Call us today for a free estimate.

With 30 years of experience, Kinzler Construction Services is the right contractor for the job. Call us today for a free estimate.

Avatar for Born Again Interiors

Born Again Interiors

4.25(
12
)

Born Again Interiors

4.25(
12
)
Customers say: Super punctual
25 years of experience

Family owned and operated residential and light commercial, contracting and sub contracting services. Additional Services: Handymen. Hardwood Flooring Sales, Installation, Refinishing. Interior Design & Decorating. Painting - Interior. Remodeling - Basements. Remodeling - General. Remodeling - Kitchen & Bathroom. Remodeling - Modular & Mobile Home. Remodeling - Sunrooms & Patio Enclosures. Siding. Windows.

Family owned and operated residential and light commercial, contracting and sub contracting services. Additional Services: Handymen. Hardwood Flooring Sales, Installation, Refinishing. Interior Design & Decorating. Painting - Interior. Remodeling - Basements. Remodeling - General. Remodeling - Kitchen & Bathroom. Remodeling - Modular & Mobile Home. Remodeling - Sunrooms & Patio Enclosures. Siding. Windows.

City Builders

3.43(
23
)

City Builders

3.43(
23
)
39 years of experience

Additional contact name - Dwight Wielenga.

"Horrible, quality of work was horrible, billed me for work that was not even done on my property. Will not take charges off the invoice for the work that was not done. I refuse to pay for work that was not done and they will not return my phone calls to discuss the discrepancy on the invoice and now put a lien on my property even though I paid for the work that was actually done. They will not release the lien or discuss the invoice with me. I would not recommend them at all."

Stephanie P on January 2025

Additional contact name - Dwight Wielenga.

"Horrible, quality of work was horrible, billed me for work that was not even done on my property. Will not take charges off the invoice for the work that was not done. I refuse to pay for work that was not done and they will not return my phone calls to discuss the discrepancy on the invoice and now put a lien on my property even though I paid for the work that was actually done. They will not release the lien or discuss the invoice with me. I would not recommend them at all."

Stephanie P on January 2025

Creating Spaces

4.60(
5
)

Creating Spaces

4.60(
5
)
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers

I work with homeowners to clearly define the problems; explore the possibilities; create a proportioally correct Before plan; personalize the designs for the After plan. These drawings are what is needed to effectively communicate with contractors and obtain competitive bids.

I work with homeowners to clearly define the problems; explore the possibilities; create a proportioally correct Before plan; personalize the designs for the After plan. These drawings are what is needed to effectively communicate with contractors and obtain competitive bids.

Avatar for All Seasons Construction

All Seasons Construction

5.00(
5
)

All Seasons Construction

5.00(
5
)
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers

All Seasons Construction is a locally owned general contracting company. We offer a 24-hour emergency service for certain situations. Our proven track record and willingness to go the extra mile will make us your go-to partner to successfully execute a wide range of projects from exterior to interior. We promise to show up on time and clean up after were finished. If you're interested in seeing some work we have done in the past, then check out our Facebook page! All it takes is one simple phone call today to schedule a FREE appointment.

"Great. I have used them several times and I would highly recommend them to others."

Victoria B on April 2020

All Seasons Construction is a locally owned general contracting company. We offer a 24-hour emergency service for certain situations. Our proven track record and willingness to go the extra mile will make us your go-to partner to successfully execute a wide range of projects from exterior to interior. We promise to show up on time and clean up after were finished. If you're interested in seeing some work we have done in the past, then check out our Facebook page! All it takes is one simple phone call today to schedule a FREE appointment.

"Great. I have used them several times and I would highly recommend them to others."

Victoria B on April 2020

Dave Navarro Construction

5.00(
2
)

Dave Navarro Construction

5.00(
2
)
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers

We are a General contracting company. We perform all services involved in the completion of unfinished space. We do hire sub contractors when needed. We also stand by their work as well. Though we have only been in buisness for a short time. we have a combined 37 years construction experience.

We are a General contracting company. We perform all services involved in the completion of unfinished space. We do hire sub contractors when needed. We also stand by their work as well. Though we have only been in buisness for a short time. we have a combined 37 years construction experience.

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Home Building questions, answered by experts

Since building up tends to provide useful bedrooms and other extra spaces without the need to do a lot of foundation work and cut into your yard, second stories tend to have better ROI—up to 65%—than other kinds of additions. But ROI will depend on the type of rooms you are planning and what your current house has. It’s not a very reliable way to judge the success or failure of a project, so consider other factors as well.

Local regulations dictate how big an ADU can be, and there may also be restrictions on the percentage of the main residence’s square footage an ADU can have. In most cases, an ADU must be smaller than the main residence, but check with your local building authority to confirm restrictions on ADU size.

To qualify as a guest house, a structure needs to meet your local building code requirements. In some locations, a guest house must be a separate residence from the primary home. In other locations, you may be able to connect the two buildings and still call the second building a guest house. However, a structure doesn’t often need a minimum size to qualify as a guest house.

This answer varies based on where you are, but most states require that all homes are greater than 320 square feet. Remember that four walls are not the only requirements—windows, closet space, minimal ceiling heights, and indoor air quality are also factors. Each state and municipality differs, though, and as some don’t consider tiny homes permanent shelters, you’ll need to check to ensure you aren’t violating any local or state laws with your build.

The average build timeline for a home is between six and 12 months, with timelines pushing toward the upper end of that range if you’re creating a custom design or need a lot of land preparation before getting started. Hiring a general contractor or a custom homebuilder will help speed up the process, as you’ll see fewer delays between different parts of the build process getting done.

The Keystone, IA homeowners’ guide to home building services

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

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