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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

"I hired them to create plans for an apartment building. The process was quick and painless. Cost was good. The plans are full complete abd ready to take to builders for quotes. I will definitly 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

"Great ! Owner Tim came out and did an emergency tarp -- in the rain, as my BR ceiling was leaking. Jan ( office manager ) worked with my insurance until the bid & repairs were enough to give me a great outcome. Their repair guy was professional, friendly and did a good job. I would not hesitate to use them again & to recommend them !"
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

Costs depend on material choices, labor, and the extent of structural modifications.

The primary reason homes have crawl spaces is so the foundation can reach down below the frost line to avoid dangerous soil movement and structural damage when the ground freezes. They’re more popular in colder climates where the ground freezes down to a few feet, and slabs are most popular in warmer areas where there is no frost line. Crawl spaces also provide a space for utility lines to run where they’re at less of a risk of freezing.

Cathedral ceilings make a statement in your home, but at the cost of your attic space. Normal attics are wide open, which allows warm air to move around and exit your home. Because of this, cathedral ceilings make your home less energy efficient and put your ceiling at risk of venting issues if you’re not careful. They also reduce your attic storage space, potentially cause an echo, and even make it harder to change a light bulb.

A 4-inch-thick concrete slab can support around 4,000 pounds per square foot if a contractor reinforces the slab with rebar, while that same slab without reinforcements will support closer to 1,000 pounds. For the purposes of a patio, 4 inches in thickness without reinforcement should suffice unless you’re installing heavy kitchen equipment or a hot tub on it. In those cases, reinforcing your slab and sticking with 4 inches of thickness should provide plenty of strength.

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

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.