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Verified Reviews for Home Building pros in Onawa, IA

*The Angi rating for Home Building companies in Onawa, 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 Onawa, 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 December 13, 2025

Find Home builders in Onawa

Avatar for Sentri Homes

Sentri Homes

New on AngiNew on Angi
•Approved Pro

Sentri Homes

New on AngiNew on Angi
•Approved Pro
2 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
24 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
)
38 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.

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

Yes, a garage apartment is generally considered a valuable asset as long as the new structure has been legally built. It's important to weigh the cost to build a garage with an apartment against the cost to convert a garage to living space if you already have a garage.

Options include traditional mortgages, construction loans, and personal loans. Consult lenders specializing in modular home financing.

Depending on size, customization, and location, costs range from $100,000 to $300,000.

Major home remodeling projects have some of the highest ROI for adding value to your home. For example, adding a primary bedroom can return about 55% of the investment to build. The cost of a primary bedroom suite averages $62,000—-so the high ROI helps sweeten the deal. However, always make sure to speak with a contractor and architect before adding a new room to your home, as each space affects the layout and aesthetic of your home differently.

A contractor can install your shipping container home in as little as 90 days. This is notably quick compared to a traditional home build, which can take more than a year (providing there aren’t permitting or construction delays that make the wait even longer). For the quickest installation, choose a prefab container home.

The Onawa, 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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