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Avatar for Evolution Drafting
Evolution Drafting
3.4(
96
)

Serving Knoxville, IA and surrounding areas

Approved

In business since 2018

Free estimates

Emergency services offered

"They were excellent. They quickly made a draft that only needed 3 minor adjustments. The final product was exactly what I needed. They referred me to a structural engineer for review. The whole process took half of the time that they initially estimated. I would definitely use them again."
Zeal Floor Plan
Charcoal
Palm Floor Plan
Charcoal Floor 2
Charcoal Floor 1

+23

Response time1 day
Response rate100%
56 neighbors recently requested a quote
Avatar for Periphery Design, LLC
Periphery Design, LLC
5.0(
1
)

Serving Knoxville, IA and surrounding areas

Approved

In business since 2004

Small jobs welcome

Offers commercial services

"Dave designed an addition for our home. The design is very cohesive and in harmony with the existing homeâ s architecture. His ideas, professionalism, and attention to detail are excellent, we look forward to the finished product."
Row House Apartments
Kitchen View
Historic Rehabilitation
Historic Rehabilitation
Addition-Bedroom Suite and Garage

+2

Response time11 hrs
Response rate92%
1 neighbors recently requested a quote
Ascended Constructions
New to Angi

Serving Knoxville, IA and surrounding areas

Approved

In business since 2023

Offers commercial services

We’re a family owned and operated company that values honesty and integrity, and stands behind our work. We offer over 40 years of industry experience. We specialize in Asphalt Shingle Roofing installation, replacement, and repairs. Our services are customized to the individual project, paying close attention to the details of each project that we're involved with. We look forward to building long-term relationships with our clients and guarantee your satisfaction!

5 neighbors recently requested a quote
Avatar for Des Moines Area Roofing
Des Moines Area Roofing
4.8(
275
)

Serving Knoxville, IA and surrounding areas

In business since 2008

Free estimates

Emergency services offered

"Des Moines Area Roofing was professional, trustworthy, and demonstrated excellent attention to detail from initial contact to job completion. Cleanup was so thorough that the next day you wouldn't even know that such a major project had taken place. It has been 2 weeks since the new roofs and we haven't seen even one stray nail left behind (and they did a complete tear down to both buildings, right down to the wood). An excellent company with which to do business. I offer my highest possible recommendation."
Additional Photos
Additional Photos
Additional Photos
Recommended by99%of homeowners
Avatar for Martinez All Construction
Martinez All Construction
4.8(
5
)

Serving Knoxville, IA and surrounding areas

In business since 2002

Free estimates

Emergency services offered

"Andres Martinez and his crew with Cesar and Adan did a phenomenal series of jobs at our home. They put in a beautiful and functional driveway, designed and constructed a very nice fire pit, and made a nice pad for our bbq grill. We were very pleased and impressed with their timeliness, professionalism, skills/talents, courtesy, and attention to detail. The pricing that Andres provided was very good and competitive with others. We will hire he and his team in the future for additional projects. We give them a 9.5 out of 10. You will not go wrong hiring this team for your next project!"
Concrete - Pouring & Repair Project
Concrete - Pouring & Repair Project
Additional Photos
Recommended by100%of homeowners
Avatar for Evolution Drafting
Evolution Drafting
3.3(
38
)

Serving Knoxville, IA and surrounding areas

In business since 2015

Free estimates

Emergency services offered

"I was really under the gun due to a prior Architectural firm not performing their duties per building plan codes. Not only were the plans incomplete but the City Plan Reviewer states(The Worst plans he’s ever seen) they will not make adjustments unless there is an additional charge for Thousands. Evaluation’s saved my clients and drew our project per code, along with Engineering in less time then they quoted. I highly recommended them, Especially Kirsten. You went above and beyond trying to coordinate this project. The staff was very professional and I will use them on all my projects. Sincerely, Frank B BCM Builders"
Charcoal Residential
Response time6 hrs
Recommended by23%of homeowners
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Structural Engineering questions, answered by experts

Whether you’re building a new home or building an extension on your existing property, you will likely need both a structural engineer and an architect. A structural engineer will determine what loads your foundation and framing can safely handle, and an architect will draw plans according to those structural calculations to simplify the building process. You can start by contacting a structural engineer near you, as many work alongside architects and can get all of the prep work done at once.

Structural engineers typically conduct inspections during a home sale or renovation, looking for signs of structural damage in various structures throughout the building, such as load-bearing walls, joists, beams, roofing trusses, foundations, and chimneys. Some of the warning signs that structural engineers check for include:

  • Dry rot

  • Infestation

  • Shifting or cracking foundations

  • Erosion

  • Water damage

  • Sagging, shifting, or damaged walls, ceilings, or roofing support

Most structural engineers offer free quotes, regardless of the size of the job. For simple inspections when buying or selling a home, engineers typically charge a flat fee that may be based solely on your home’s foundation type and square footage. For larger projects, like new construction and major home renovations, an engineer will either perform an analysis of your project and site and provide you with a formal estimate, or they will do a more in-depth assessment and in-person site inspection before coming up with a per-hour or per-project cost estimate. In most cases, the estimate is free.

Yes, unresolved damage can decrease property integrity and market value.

Yes, ceiling joists are typically load-bearing. However, their primary function is to support the weight of the ceiling and loads applied to it, like lighting fixtures and ceiling fans. They can also help support the roof, especially if they’re part of truss systems. Remember, the load-bearing capacity of ceiling joists depends on the material, size, and space between them. 

The Knoxville, IA homeowners’ guide to structural engineering services

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