Concrete contractor · Windsor, CA · reviewed since 2022
iHow the Experts Score is calculatedEach factor is scored 0–100 on absolute terms (standing in the category can only raise it), then weighted; problems flagged in review highlights or a recent slide in ratings are subtracted:Satisfaction 59%91+53.4Reliability 26%89+23.2Value 15%87+13.2Craft & service penalty88−1.2Experts Score= 89Not enough data for replies to reviews; its weight is shared by the others.Grade A: A = 80+, B = 60–79, C = 40–59, D = 20–39. Needs 10+ reviews.89SCORE
AGradeiLetter from the Experts Score: A = 80+, B = 60–79, C = 40–59, D = 20–39, F = under 20.
#13 of 31 deck contractorsiPosition by Experts Score among all companies we track in this category. · better than 60%
5.0★★★★★22 Google reviews · 24 photos
95%five-star reviews
5.00★last 12 monthsiAverage stars on reviews from the last 12 months only.
0%1–2★, last 20 reviewsiShare of 1–2★ reviews in the last 24 months — or the 20 newest reviews when the company had fewer than 20 in that time.
Google reviewers rate JAM3 Builders five stars based on twenty-two reviews, noting the owner responds to twenty-seven percent of feedback. Clients describe services including concrete pads, retaining walls, decks, fences, and driveways, citing quality construction, fair pricing, and punctual completion within budget. Recurring themes highlight clear communication, professional conduct, and the team's ability to handle complex projects or tight timelines efficiently. No common criticisms appear in the provided excerpts, as all listed reviews are positive.
Google rating: 5.0 out of 5 from 22 reviews (95% five-star).
Reviews on this page: 22 Google reviews (20 with written comments, 7 with photos).
Owner responses: the business replied to 27% of reviews.
Score per factor (100 = best)iEach factor is scored 0–100 on absolute terms (star average, share of 1–2★ reviews, price verdicts…); standing within the category can only raise it, never lower it.. Strongest: momentum and satisfaction; weakest: value.
This companyDeck Contractors median0 = centre, 100 = best
SatisfactioniSatisfaction · 54% of the scoreRecency-weighted star average (2-year half-life), shrunk toward the category mean by review volume; the company’s own lifetime average as the prior; absolute: 4.0★ = 0, 5★ = 100.JAM3 Builders - Concrete Contractor: 91/100 on this factor. Category median: 83.A
91
ReliabilityiReliability · 24% of the scoreHow rarely jobs go badly: share of 1–2★ reviews — 60% the last 24 months (or the 20 newest if fewer), 40% all-time; 0% = 100, 15%+ = 0; the category percentile can only raise it.JAM3 Builders - Concrete Contractor: 89/100 on this factor. Category median: 75.A
89
Craft & serviceiCraft & service · penalty only, up to −10 pointsGoogle review highlights: Quality, Professionalism, Responsiveness, Punctuality — how rarely reviewers flag them as a negative, per review since highlights began; 0% = 100, 5%+ = 0. Subtracted from the score (up to −10), never averaged in — clean highlights are the norm, not a bonus.JAM3 Builders - Concrete Contractor: 88/100 on this factor. Category median: 88.A
88
ValueiValue · 14% of the scoreCustomers’ own price verdicts (Great / Reasonable vs Overpriced) and Value highlights; 65% absolute (all “reasonable” ≈ 80, “great” = 100), the category percentile can only raise it.JAM3 Builders - Concrete Contractor: 87/100 on this factor. Category median: 100.A
87
MomentumiMomentum · penalty only, up to −10 pointsPenalises only a real slide: last-12-month average below lifetime (−0.5★ = 0). Still 4.8★+ over the last year, or steady/improving = 100. Subtracted from the score (up to −10), never averaged in.JAM3 Builders - Concrete Contractor: 100/100 on this factor. Category median: 100.A
100
Replies to reviewsiReplies to reviews · 7% of the scoreHow often the owner publicly replies to reviews under 5★ (1–4★). Needs 3+ such reviews, otherwise not counted; 65% absolute (80%+ replied = 100), the category percentile can only raise it.Not enough reviews for this factor yet. Category median: 57.–
–
Bar = this company · dark tick = category median.
Star ratings
22 Google reviews we collected
5.0of 5
5 stars2195%
4 stars15%
3 stars00%
2 stars00%
1 star00%
Praise vs complaints
Phrases our text analysis found in 20 written reviews
100%praise
Praise52100%
Complaints00%
Topic share
How often each topic comes up in the written reviews
7topics
Quality & results1325%
Would recommend1223%
Communication713%
Staff & attitude612%
Speed & response612%
Price & value612%
Honesty & trust24%
What customers talk about
We read 20 written reviews and marked every phrase about these topics. The same colors are highlighted in the reviews.
“Tony and his team were fantastic, did a quality job, and were incredibly easy to work with.”
“Will be using them again for future projects, they do excellent work!”
“He was extremely organized, very communicative, and his billing process was very straightforward.”
“He led a crew that were professional and courteous.”
“The communication was straight forward, timely, and the project was on time and on budget.”
“Tony is super easy to work with and his pricing is very fair.”
“We’re very happy with how everything turned out and we would recommend Tony to anyone looking for dependable concrete work.”
People customers mention
Tony7 reviews
praise complaint · found by our text analysis, Google review wording unchanged.
Reviews for your job
Customers hired JAM3 Builders - Concrete Contractor for 2 kinds of job. Pick one to see what they paid and said.
Tracy11 reviewsiTotal number of Google reviews this person has written across all businesses on Google Maps (not just this one). More reviews usually means a more experienced, trustworthy reviewer. · 7 months ago★★★★★
Tony and his team were fantastic, did a quality job, and were incredibly easy to work with. We had a very complicated concrete job and they handled it with precision and care. Tony went above and beyond with managing expectations and keeping in constant communication to keep our tenants happy, as well as ownership.…
Jessie3 reviewsiTotal number of Google reviews this person has written across all businesses on Google Maps (not just this one). More reviews usually means a more experienced, trustworthy reviewer. · 8 months ago★★★★★
I highly recommend Tony and his guys. They did a wonderful job installing our fence. Our property is just shy of 2 acres and Tony did not disappoint. He was extremely organized, very communicative, and his billing process was very straightforward. Super nice guy and great to work with. I will definitely be hiring him again.
mauidream23 reviewsiTotal number of Google reviews this person has written across all businesses on Google Maps (not just this one). More reviews usually means a more experienced, trustworthy reviewer. · 9 months ago★★★★★
We hired JAM3 Builders to build two concrete retaining walls which supported two fences in our back and side yards. The finished product turned out great. The walls are solid, level, and well constructed. It looks like they will last for many years. The Simpsons strong ties were placed with good precision within the…
Ron1 reviewiTotal number of Google reviews this person has written across all businesses on Google Maps (not just this one). More reviews usually means a more experienced, trustworthy reviewer. · 10 months ago★★★★★
I had Tony and his crew replace a large deck in my yard recently. Very professional with an eye for detail. Being in construction for 35 years, I appreciate quality work. Very satisfied with the build ! I would recommend JAM3 builders to anyone who appreciates someone who can deliver a quality job.
Coulter1 reviewiTotal number of Google reviews this person has written across all businesses on Google Maps (not just this one). More reviews usually means a more experienced, trustworthy reviewer. · 2 years ago★★★★★
Tony is super easy to work with and his pricing is very fair. He did a RV pad and fence for me and the finished product looks great.
Jack1 reviewiTotal number of Google reviews this person has written across all businesses on Google Maps (not just this one). More reviews usually means a more experienced, trustworthy reviewer. · 2 years ago★★★★★
Tony is conscientious and fair. He led a crew that were professional and courteous. The communication was straight forward, timely, and the project was on time and on budget.
Tony and his team were fantastic, did a quality job, and were incredibly easy to work with. We had a very complicated concrete job and they handled it with precision and care. Tony went above and beyond with managing expectations and keeping in constant communication to keep our tenants happy, as well as ownership. Will be using them again for future projects, they do excellent work!
Response from the owner · 7 months ago
Thank you so much Tracy, It was our pleasure!
Removing linoleum to get down to that concrete slab and then sanding and buffing it to the right level is definitely a precise process, I’m glad we hit the mark for you.
As a fellow Rohnert Park business, we love serving our neighbors and appreciate the trust you put in us. We look forward to working with you again on the project!
Jessie Gomes3 reviewsiTotal number of Google reviews Jessie has written across all businesses on Google Maps, not just this one.
I highly recommend Tony and his guys. They did a wonderful job installing our fence. Our property is just shy of 2 acres and Tony did not disappoint. He was extremely organized, very communicative, and his billing process was very straightforward. Super nice guy and great to work with. I will definitely be hiring him again.
Response from the owner · 8 months ago
I really appreciate the kind words! My crew and I had a great time getting that fence installed for you up in Fountaingrove.
Stretching a project across a 2-acre property like yours takes a lot of prep, so I’m glad you felt the communication and organization were on point. I always try to keep my billing as straightforward as the work itself because I know how important that is for my clients in Santa Rosa.
It was a pleasure working with you, and I look forward to helping you out with any other projects you have down the road!
mauidream23 reviewsiTotal number of Google reviews mauidream2 has written across all businesses on Google Maps, not just this one.
We hired JAM3 Builders to build two concrete retaining walls which supported two fences in our back and side yards. The finished product turned out great. The walls are solid, level, and well constructed. It looks like they will last for many years. The Simpsons strong ties were placed with good precision within the concrete walls and I really appreciated this because it made building the two fences on top of the concrete walls much easier for me.
The quality of the concrete work really stands out and the project was completed successfully from start to finish. We’re very happy with how everything turned out and we would recommend Tony to anyone looking for dependable concrete work.
Ron Parsons1 reviewiTotal number of Google reviews Ron has written across all businesses on Google Maps, not just this one.
I had Tony and his crew replace a large deck in my yard recently. Very professional with an eye for detail. Being in construction for 35 years, I appreciate quality work. Very satisfied with the build ! I would recommend JAM3 builders to anyone who appreciates someone who can deliver a quality job.
Response from the owner · 10 months ago
Thank you so much for the review! Coming from someone with 35 years in the construction industry, your praise for my eye for detail truly means a lot to me and my entire crew. We’re glad you’re satisfied with the new redwood deck and pergola. We love serving our local community throughout all of Rohnert Park
Coulter Adams1 reviewiTotal number of Google reviews Coulter has written across all businesses on Google Maps, not just this one.
Tony is conscientious and fair. He led a crew that were professional and courteous. The communication was straight forward, timely, and the project was on time and on budget.
Response from the owner · 2 years ago
Thank you for the great review Jack.
Jaylyn Eddlemon4 reviewsiTotal number of Google reviews Jaylyn has written across all businesses on Google Maps, not just this one.
We worked with JAM3 for a custom hardscaping project in Healdsburg. It ended up beautifully and on time! I would definitely recommend working with Tony and team and would hire them again.
Response from the owner · 2 years ago
Thank you for the kind words Ali it was an Awesome Project to do! those leaves were my absolute favorite part.
Susan Burr1 reviewiTotal number of Google reviews Susan has written across all businesses on Google Maps, not just this one.
Tony was very quick to reply. He and his workers did an excellent job building our deck. They completed the job in a timely manner. They left no debris behind. I would highly recommend JAM3Builders.
Patricia Boyd9 reviewsiTotal number of Google reviews Patricia has written across all businesses on Google Maps, not just this one.
I highly recommend Tony bc he's trustworthy and cares about the client. I hired Tony to repave my driveway and build a fence and gate. He did a beautiful job. The attached pictures speak for themselves.I didn't want an average run of the mill grey cement driveway. I wanted something different so Tony added color to the cement. That was risky bc I wasn't sure how it would turn out. But I trusted Tony. He held my hand throughout the process resulting in a great outcome. I love it as well my beautiful new fence and gate. I am a very happy and satisfied customer.
