57/100CR Score
Ranked #1 because of its Google rating and trade focus: 5.0★ from 12 Google reviews, listed on Google as “Concrete contractor”.
- 5.0★ from 12 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
Best Concrete Contractors in Grinnell, IA (2026)
10 concrete contractors ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
The short answer
- 1
Best overall in Grinnell: Diaz Construction LLC, CR Score 57/100; 5.0★ from 12 Google reviews; open 24/7.
- 2
Best for emergencies (open 24/7): A & A Concrete, posts 24/7 hours; ranked #2 of 10.
- 3
Most-reviewed: Polyraise Concrete Of Eastern Iowa, 26 Google reviews at 4.0★, the most of 10 ranked; ranked #3.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
10 Grinnell concrete contractors are ranked here by CR Score, from ten published factors. 3 are open 24/7, 5 open Saturdays and 2 open Sundays, based on posted hours. The median Google rating is 4.2★ across 10 rated businesses.
Most of this list also appears on the Concrete contractors in Marshalltown ranking. See Concrete contractors in Marshalltown
Top 10 concrete contractors in Grinnell at a glance
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | Diaz Construction LLC | 57 | 5.0★ (12) | Marshalltown, 23 mi away | 24/7 | Overall |
| 2 | A & A Concrete | 56 | 5.0★ (12) | Marshalltown, 21 mi away | 24/7 | Emergencies |
| 3 | Polyraise Concrete Of Eastern Iowa | 55 | 4.0★ (26) | Cedar Rapids, 18 mi away | Evenings | Most reviews |
| 4 | LeRoy Morford Construction Co. | 53 | 4.2★ (5) | Marshalltown, 23 mi away | 24/7 | — |
| 5 | Rinker Materials | 52 | 3.9★ (15) | Marshalltown, 21 mi away | — | — |
| 6 | New Generation Concrete LLC. | 51 | 4.2★ (5) | Marshalltown, 22 mi away | Sat · Evenings | — |
| 7 | Pella Concrete Contractors, Inc. | 50 | 4.0★ (9) | Pella, 24 mi away | — | — |
| 8 | Trusted Roofing and Exteriors | 47 | 5.0★ (11) | Altoona, 24 mi away | Sat | — |
| 9 | Jasper Construction Services, Inc. | 46 | 5.0★ (9) | Newton, 16 mi away | — | — |
| 10 | Ramms Construction | 41 | 3.0★ (4) | Marshalltown, 23 mi away | — | — |
The 10 best concrete contractors in Grinnell, ranked
Ordered by CR Score, a 0–100 score from ten published factors. Paid placement never changes the order.
Scores below: based on 8 of 10 factors; credentials and recency not yet collected. Hatched segments mark factors we don't have yet.
Based in Marshalltown, 21 mi away
56/100CR ScoreRanked #2 because of its Google rating and trade focus: 5.0★ from 12 Google reviews, listed on Google as “Concrete contractor”.
- 5.0★ from 12 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 308 Iowa Ave E, Marshalltown, IA 50158
Based in Cedar Rapids, 18 mi away
55/100CR ScoreRanked #3 because of its Google rating and review volume: 4.0★ from 26 Google reviews, the most in Grinnell.
- 4.0★ from 26 Google reviews
- Hours
- Mon–Fri 7 AM–7 PM · Sat–Sun closed
Based in Marshalltown, 23 mi away
53/100CR ScoreRanked #4 because of its Google rating and trade focus: 4.2★ from 5 Google reviews, listed on Google as “Concrete contractor”.
- 4.2★ from 5 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 715 W Madison St, Marshalltown, IA 50158
Based in Marshalltown, 21 mi away
52/100CR ScoreRanked #5 because of its Google rating and trade focus: 3.9★ from 15 Google reviews, listed on Google as “Concrete contractor”.
- 3.9★ from 15 Google reviews
- Hours
- Mon–Fri 7 AM–3:30 PM · Sat–Sun closed
- Address
- 2002 E Olive St, Marshalltown, IA 50158
Based in Marshalltown, 22 mi away
51/100CR ScoreRanked #6 because of its Google rating and trade focus: 4.2★ from 5 Google reviews, listed on Google as “Concrete contractor”.
- 4.2★ from 5 Google reviews
- Hours
- Mon–Fri 7 AM–7 PM · Sat 7 AM–6 PM · Sun closed
- Address
- 212 W Ferner St, Marshalltown, IA 50158
Based in Pella, 24 mi away
50/100CR ScoreRanked #7 because of its Google rating and trade focus: 4.0★ from 9 Google reviews, listed on Google as “Concrete contractor”.
- 4.0★ from 9 Google reviews
- Hours
- Mon–Fri 7 AM–3:30 PM · Sat–Sun closed
- Address
- 669 Hwy T14, Pella, IA 50219
Based in Altoona, 24 mi away
47/100CR ScoreRanked #8 because of its Google rating and review volume: 5.0★ from 11 Google reviews.
- 5.0★ from 11 Google reviews
- Hours
- Mon–Fri 8 AM–5 PM · Sat 8 AM–12:30 PM · Sun closed
Based in Newton, 16 mi away
46/100CR ScoreRanked #9 because of its Google rating and review volume: 5.0★ from 9 Google reviews.
- 5.0★ from 9 Google reviews
- Hours
- Mon–Fri 7:30 AM–4:30 PM · Sat–Sun closed
- Address
- 928 N 19th Ave E, Newton, IA 50208
Based in Marshalltown, 23 mi away
41/100CR ScoreRanked #10 because of its Google rating and trade focus: 3.0★ from 4 Google reviews, listed on Google as “Construction company”.
- 3.0★ from 4 Google reviews
- Hours
- Mon–Fri 9 AM–5 PM · Sat–Sun closed
- Address
- 2235 Highland Acres Rd, Marshalltown, IA 50158
How much do concrete contractors cost in Grinnell?
National price ranges in USD, not adjusted for Grinnell. Each row names its basis and the month we checked it.
| Job | Low | Typical | High | Basis | Checked |
|---|---|---|---|---|---|
| Concrete driveway | $2,700 | $6,400 | $14,500 | Per driveway: typical range of customer-reported projects (about $8 to $20 per sq ft). US national range | October 2026 |
How we ranked Grinnell concrete contractors
We scored 10 Grinnell concrete contractors on ten factors, weighted as shown. A business is ranked when its trade is confirmed and it has 3 or more Google reviews or a claimed profile. A business with no Google reviews scores zero on rating, review volume and recency. Other unknown factors are left out, not counted as zero. Scores last refreshed October 22, 2026.
Paid placement never changes a rank or score. Featured businesses are paid, labelled, limited to 3 and shown above the ranking, outside it.
| Factor | Weight | Computed from | In Grinnell data |
|---|---|---|---|
| Reputation | 25% | Google star rating, adjusted for how many reviews back it | Measured |
| Credentials | 15% | Active state license, bond and workers’ comp on file | Not yet collected |
| Review volume | 10% | Number of Google reviews, compared with the most-reviewed business on the list | Measured |
| Recency | 5% | Share of reviews from the last 12 months | Not yet collected |
| Availability | 5% | Weekly open hours, Saturday, Sunday, 24/7 or same-day | Measured |
| Trade focus | 10% | How clearly the business does this trade (its Google category and name) | Measured |
| Proximity | 5% | Based in the city scores highest, less the farther away it is | Measured |
| Claimed profile | 10% | The business has claimed its ContractorsRanked profile (free or paid earn the same) | Measured |
| Partnered | 5% | The business links to ContractorsRanked from its own website with our badge, checked periodically | Measured |
| ContractorsRanked reviews | 10% | Verified customer reviews collected by ContractorsRanked: their rating and how many there are | Measured |
Concrete contractors in Grinnell: frequently asked questions
Who is the best concrete contractor in Grinnell?
By CR Score, the highest-ranked concrete contractor in Grinnell, IA is Diaz Construction LLC with a CR Score of 57/100. It has 5.0★ from 12 Google reviews. It is open 24/7. A & A Concrete (#2) and Polyraise Concrete Of Eastern Iowa (#3) follow. We ranked 10 concrete contractors on ten factors, last updated October 22, 2026.
Which concrete contractors in Grinnell are open 24/7?
3 ranked concrete contractors in Grinnell post 24/7 hours. The highest-ranked are Diaz Construction LLC (#1), A & A Concrete (#2) and LeRoy Morford Construction Co. (#4). Hours come from each business's Google listing as of October 2026, so call to confirm.
Which concrete contractors in Grinnell work on weekends?
5 of 10 ranked concrete contractors post Saturday hours and 2 post Sunday hours. The highest-ranked open Saturdays are Diaz Construction LLC (#1), A & A Concrete (#2) and LeRoy Morford Construction Co. (#4). Posted hours are office hours; crews may book weekend jobs separately.
How much does concrete driveway cost in Grinnell?
Concrete driveway typically costs $2,700 to $14,500, with $6,400 typical (Per driveway: typical range of customer-reported projects (about $8 to $20 per sq ft). US national range). This is a national range, not adjusted for Grinnell. Prices were last checked October 2026. Get at least two written quotes before you hire.
What Google rating do Grinnell concrete contractors have?
The median Google rating among 10 rated concrete contractors in Grinnell is 4.2★, with a median of 10 reviews. Polyraise Concrete Of Eastern Iowa has the most, 26 reviews, and ranks #3. We adjust ratings for review count, so a few five-star reviews cannot top the list.
How does ContractorsRanked rank concrete contractors?
Each concrete contractor gets a 0–100 CR Score from ten published factors, led by reputation (25%), credentials (15%), review volume (10%) and trade focus (10%). A business with no Google reviews scores zero on rating, review volume and recency; other factors we cannot measure are left out. Only businesses with a confirmed trade and 3 or more reviews, or a claimed profile, are ranked.
Do concrete contractors outside Grinnell count in this ranking?
Yes, if they are within 25 mi of the Grinnell city center, our service radius for concrete contractors. Each listing shows where the business is based and how far away it is. Proximity is 5% of the CR Score, so a nearby business gets a small edge.
Can concrete contractors pay to rank higher on ContractorsRanked?
No. The CR Score never reads payment status, and this ranking has 0 paid placements. Up to 3 Featured businesses may appear above the list, labelled Featured and showing their honest rank.
Update log for Grinnell
- October 2026: CR Scores recalculated for 10 concrete contractors serving Grinnell.
- October 2026: 1 duplicate listing merged.
More concrete contractors and Grinnell pages
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