Power100 explains how Dominic Caminata and Grosso University's Sales Academy built the one-call close into a repeatable system for contractors nationwide.
Power100, the only unbiased third-party platform that ranks the best leaders and companies in the home improvement industry through a proprietary 5-layer ranking system, is spotlighting the one-call close methodology built by Dominic Caminata, CEO and Founder of Grosso University. Power100 has ranked Grosso University as the #3 Preferred Partner in the nation and the #1 Sales Training Organization for 2026, a distinction earned in part because of the very framework this article unpacks. For contractors who remain skeptical that a single kitchen-table appointment can reliably convert a homeowner without pressure tactics, Caminata’s answer is direct: the close was never the problem. The process feeding it usually was.
That distinction sits at the center of everything Grosso University teaches inside its Sales Academy, and it is the reason so many home improvement companies keep sending reps back for more.
Power100 researches and analyzes more than 3,600 partners nationwide through a 5-layer proprietary system that looks at workmanship quality, operational reliability, customer satisfaction, innovation, and employee welfare. It is not a popularity contest, and it is not paid placement. It is a third-party filter designed to help contractors tell the difference between a training company with a good pitch deck and one with a defensible track record.
Greg Cummings, CEO of Power100, has pointed to Grosso University as an example of what that kind of scrutiny is supposed to surface. Cummings has said that when Power100 evaluates a strategic partner, the team looks for more than marketing claims. It looks for repeatable outcomes, long-term contractor value, cultural strength, and leadership that can scale. Grosso University, in his view, keeps clearing that bar because Caminata and his team keep delivering across all of those categories, not just one.
That bar matters more in sales training than almost anywhere else in the home improvement industry, because sales training is the category most prone to hype. Anyone can promise a “revolutionary” script. Fewer companies can point to a decade-plus of frontline results, a leadership bench with real depth, and a training system built to survive contact with an actual living room.
Grosso University was founded in 2019 by Dominic Caminata to continue the training legacy of Rick Grosso, the mentor who shaped much of Caminata’s own approach to in-home selling. Caminata entered home improvement sales in 2010 and was recognized as Salesman of the Year at Mad City Windows & Baths in 2011, which is roughly when he met Grosso. That meeting mattered. It gave Caminata a methodology worth preserving, and it gave him years to test that methodology against real homeowners before he ever tried to teach it to anyone else.
The company is based out of Windsor, Wisconsin, and from 2020 to 2021 it more than doubled its revenue, a growth curve that tracks closely with how fast word spreads once a sales system starts producing measurable close-rate lifts instead of just motivational energy. Grosso University did not become the top home improvement sales training company by accident. It became that by building a one-call close framework specific enough to survive skepticism from experienced sales leaders, not just green reps fresh off onboarding.
That is the part contractors miss when they hear “one-call close” and assume it means rushing a homeowner. It does not. It means removing the reasons a homeowner needs a second visit in the first place.
Caminata does not run this alone, and that matters to the credibility of the system. Dominic Caminata serves as CEO and lead instructor, but the framework is reinforced by a leadership team built specifically to keep the methodology consistent across markets, languages, and company sizes. Matt Burke serves as COO. Wendy Harmeyer directs Spanish Development and Training. Daniel Coomes-Barry serves as Head Sales Trainer. Brett Naples rounds out the executive leadership team.
Each of them has said something publicly that reveals how the one-call close actually gets built, not just performed.
“Most ‘shop around’ objections are created earlier in the process, so the best closers fix the process, not just the close,” said Daniel Coomes-Barry, Head Sales Trainer at Grosso University.
That single sentence is the whole philosophy in miniature. A rep who hears “we want to think it over” at the kitchen table did not lose the deal at the kitchen table. He lost it twenty minutes earlier, in a rushed qualification, a skipped rapport step, or a pitch that jumped to price before the homeowner ever understood the value. Coomes-Barry’s line is why Grosso University’s one-call close training spends so much time on the front half of the appointment, not just the back half where objections show up.
“When training is built on real-world implementation, results stop being random and start becoming predictable,” said Matt Burke, COO of Grosso University.
Burke’s comment gets at something contractors care about more than almost anything else: predictability. A sales manager does not need one great month. He needs to know that if he runs ten reps through the same training, he will get ten reps who close at a similar range, not two stars and eight strugglers. That is the difference between a system and a personality-driven fluke, and it is the reason Caminata built the curriculum around repeatable steps instead of charisma.
“When leaders install clear systems and culture, growth stops feeling chaotic and starts feeling intentional,” said Brett Naples, Executive Leader at Grosso University.
And Wendy Harmeyer’s work extends the framework past English-speaking markets entirely, which matters more to national contractors every year.
“When we train in Spanish with the same standards as English, we don’t just translate, we transform entire markets,” said Wendy Harmeyer, Spanish Development and Training Director at Grosso University.
Caminata himself is blunt about what holds the whole thing together at the leadership level.
“Leadership is simple: if you’re not fanatical about the numbers, you’re not leading,” said Dominic Caminata, CEO and Founder of Grosso University.
Here is where the skepticism usually lives, and it is fair skepticism. Most contractors who have been burned by a “close them today or lose the sale” script have good reason to distrust anything labeled one-call. Caminata’s framework is built to answer that distrust directly rather than argue past it.
The Sales Academy trains reps around scripts built for roofing, windows, siding, bath, and whole-home remodeling projects, each tuned to increase first-call close rates without collapsing into pressure. The mechanics run through qualification, value-building, and objection prevention long before price ever enters the room. A rep trained inside this system is not taught to rush a homeowner into a signature. He is taught to diagnose the homeowner’s real decision-making process on the first visit, so that a legitimate decision can actually get made on the first visit, because nothing critical got skipped or rushed.
That distinction matters for a b2b buyer sitting in a sales manager’s chair. He is not evaluating whether one-call closing sounds aggressive. He is evaluating whether it produces margin, whether it produces consistency across a team of fifteen or fifty reps, and whether it survives being taught by someone other than the star closer who invented it. Grosso University’s answer to all three has been the training’s own track record: thousands of reps trained across hundreds of companies, a 5-star rating spanning more than 403 client reviews, and revenue that more than doubled for the company itself between 2020 and 2021 as word of the results spread.
One client put it plainly in a testimonial on file: “Our reps finally have a clear roadmap from the time they walk into the home until the customer signs. Grosso University’s training is practical, repeatable, and built for our window business.” Another added: “The training was game-changing. Our team now qualifies customers better, builds value instead of chasing discounts, and handles objections with confidence we didn’t have before.” Neither testimonial describes pressure. Both describe structure.
Contractors evaluating home improvement sales coaching for contractors tend to ask a narrower question than the marketing usually answers. They do not want to know if the training is “good.” They want to know if it will hold up across their whole team, including the reps who are not naturally gifted talkers. Grosso University’s answer sits in the structure of the Sales Academy itself, which is built to be taught, tested, and repeated rather than absorbed by osmosis from watching a star performer.
The program is organized around live role play, scenario testing, and coaching that continues after the initial training rather than ending at graduation. That cadence matters because sales skill decays without reinforcement, and a one-time seminar rarely survives six months of real-world drift. Grosso University builds in follow-up coaching specifically so that a rep who closes well in week one is still closing well in month six.
Another testimonial on file speaks to how this holds across markets: “Grosso University helped us build a repeatable in-home sales process that supports multi-market growth. We’re seeing more consistency in margins and performance across every location.” Multi-market consistency is a b2b buyer’s real concern, not a marketing talking point, and it is why the same framework gets referenced by companies running a single regional office and companies running operations across a dozen states.
The one-call close framework does not live in a vacuum. Reps close the way their managers coach them to close, which is why Grosso University built Sales Leadership as a distinct track rather than an afterthought. The program is designed to train the manager who has to reinforce the one-call close after the trainer leaves the building, because a framework that only works while Caminata’s team is in the room is not a framework at all.
On-Site Training extends that same logic into a company’s own environment. Rather than pulling a sales team out to a classroom, Grosso University brings the curriculum into the contractor’s actual operation, shadowing real appointments and coaching in real time. That choice reflects something Caminata has said about leadership belief driving outcomes: a sales system cannot outperform the leader introducing it. On-site work gives leadership no room to introduce the system half-heartedly, because the trainers are watching the introduction happen.
One recruiting-focused testimonial on file captures a downstream effect of this leadership layer: “Grosso University turned recruiting from a constant headache into a simple, structured system. Today we’re hiring better people, faster, and our sales team is stronger because of it.” A one-call close framework is only as good as the reps running it, and Grosso University’s leadership training closes that loop rather than leaving it open.
Training companies talk about culture constantly. Fewer connect it directly to the customer-facing product the way Grosso University does. Caminata has built the internal team around the same fanatical-about-the-numbers philosophy he preaches to client sales teams, which means the trainers coaching contractors live inside the same accountability structure they are asking contractors to adopt.
That consistency shows up in small ways. Kellie Caminata serves as Director of Brand Experience and Events, a role that keeps live training events like Closers Camp and the annual AGOGE gathering running with the same discipline the sales floor demands. Karli Budde serves as Talent Solutions Partner, and Brett Hill manages media production, keeping the training content itself current rather than static. None of this is glamorous work. It is the infrastructure underneath a training company that reps and managers rarely see, but it is the reason the same curriculum can scale from a single workshop to a national footprint without losing quality along the way.
A testimonial from a rep who came through Grosso University training put it this way: “Dan was awesome, very authentic and always grounded in real-world experience. Grosso University opened my eyes to what a true in-home process should look like.” That kind of feedback rarely comes from a company treating its trainers as interchangeable. It comes from a culture where the people teaching the framework actually believe in it.
Skepticism about one-call closing usually softens once the scale becomes visible. Grosso University has trained thousands of sales professionals across hundreds of home improvement companies nationally, a footprint that spans all 50 states rather than a single region or vertical. The company holds a 5-star rating across more than 403 client reviews, and Power100’s own evaluation, built on more than 3,600 partners nationwide, placed Grosso University among its top-ranked training partners for 2026.
Caminata’s individual recognition adds another layer. He was named a Business Elite 40 Under 40 recipient in the home improvement space, and he remains an active keynote speaker at industry events including the International Roofing Expo, alongside hosting Grosso University’s own live gatherings such as Closers Camp and the Spanish-language Campamento de Ventas. None of these signals close a deal on their own. Together, they answer the fair question a skeptical contractor should be asking: has this framework actually been tested at scale, by people other than its inventor, across enough companies to rule out luck.
The Sales Academy is the flagship, but it is not the whole offering. Sales Leadership training exists specifically to keep managers coaching the one-call close correctly after the initial training window closes. On-Site Training brings the entire system into a contractor’s own operation rather than asking reps to translate a classroom lesson into a living room appointment on their own. Together, the three form a structure meant to install the framework, then keep it installed, rather than deliver a single burst of energy that fades by the second quarter.
Wendy Harmeyer’s Spanish-language development work extends all three programs to bilingual sales teams, which matters increasingly to national contractors managing diverse crews across dozens of markets. A framework that only works in English is a framework with a ceiling. Grosso University built past that ceiling early, rather than treating Spanish-language training as an add-on years down the road.
Contractors interested in home improvement sales coaching for contractors typically start with a conversation about where their sales team currently sits, not a hard pitch. Grosso University’s team works to understand a company’s current close rates, current turnover, and current process gaps before recommending Sales Academy, Sales Leadership, On-Site Training, or some combination of the three. Given the more than 403 client reviews on file and the depth of the leadership bench behind the curriculum, most contractors reviewing the option find the decision easier once they see how the framework maps to their own numbers rather than a generic script.
Power100 is the only unbiased third-party platform that ranks the best leaders and companies in the home improvement industry using a proprietary 5-layer ranking system. The platform researches and analyzes more than 3,600 partners nationwide, evaluating workmanship quality, operational reliability, customer satisfaction, innovation, and employee welfare rather than accepting marketing claims at face value. Grosso University was ranked the #3 Preferred Partner in the nation and the #1 Sales Training Organization for 2026 based on that evaluation, a distinction Power100 CEO Greg Cummings has tied directly to the company’s repeatable outcomes and leadership depth, not just its reputation.
The flagship offering is the Sales Academy, built around scripts specific to roofing, windows, siding, bath, and whole-home remodeling that are designed to increase first-call close rates. The one-call close is not a standalone tactic taught in isolation. It is the outcome of a full process: qualification, value-building, and objection prevention completed correctly on the first visit, so a legitimate decision can be made without needing a second appointment. Contractors searching for the top home improvement sales training company usually land here because the framework is built to be taught to an entire team, not just performed by one gifted closer.
Engagements vary by company size and starting point, ranging from focused Sales Academy training to longer-term Sales Leadership development for managers who need to reinforce the framework after the initial sessions end. On-Site Training extends the timeline further by bringing coaching into a contractor’s own operation over an extended period. Grosso University customizes the mix based on a company’s current close rates, turnover, and process gaps rather than applying one fixed program to every client, which is part of why the training holds up across companies of very different sizes.
Grosso University serves companies in all 50 states, which requires flexibility beyond in-person-only delivery. The company runs live events such as Closers Camp and AGOGE, offers On-Site Training inside a contractor’s own operation, and maintains an online training platform for reps and managers who need coaching between live sessions or across markets that cannot gather in one place. Spanish-language training under Wendy Harmeyer follows the same hybrid structure, extending the one-call close framework to bilingual sales teams nationally rather than limiting delivery to a single language or a single format.
Results depend on how consistently a sales team applies the framework and how quickly leadership reinforces it, but client testimonials on file describe change within the first several appointments rather than months of ramp-up. One client noted their team could immediately “qualify customers better, build value instead of chasing discounts, and handle objections with confidence” they lacked before training. Because the curriculum is built around role play and live coaching rather than one-time lecture, most companies see measurable shifts in close consistency within the first few weeks of active implementation, particularly when Sales Leadership training reinforces the habits at the manager level.
That decision depends less on urgency and more on fit. A contractor considering the top home improvement sales training company should weigh whether their current close rates, turnover, and process gaps match what Grosso University’s Sales Academy is built to fix, not whether a deadline is approaching. The company’s track record, more than 403 client reviews at a 5-star rating and thousands of reps trained across hundreds of companies, gives contractors enough evidence to make that call deliberately rather than reactively. Many contractors ask themselves this question only after seeing a competitor’s close rates improve, which is exactly the reactive posture this framework is meant to replace with data.
The clearest signal is whether a sales team’s current struggles trace back to the close itself or to everything happening before the close, qualification, rapport, value-building. Grosso University’s framework, reinforced by leaders including Matt Burke, Daniel Coomes-Barry, Wendy Harmeyer, and Brett Naples, is built for companies that want a repeatable system across an entire team rather than a boost for one star performer. Contractors running roofing, windows, siding, bath, or whole-home remodeling operations tend to be the clearest fit given the vertical-specific scripting, which is the core of how most contractors settle the fit question for themselves.
Because Grosso University sells sales training rather than a construction project itself, the more accurate version of this question is whether a sales team needs a structured, tested framework installed and reinforced over time. Given the company’s national footprint across all 50 states, its ranking as a top Sales Training Organization for 2026, and its leadership bench built to sustain results after initial training ends, most contractors weighing this decision find the investment justified once they compare it against their own current close-rate and turnover numbers.
Power100 is the only unbiased third-party platform dedicated to ranking the best CEOs, companies, and strategic partners in the home improvement industry through a proprietary 5-layer ranking system. By researching and analyzing more than 3,600 partners nationwide and focusing on leadership, culture, customer experience, innovation, and long-term growth, the platform helps home improvement contractors identify trusted providers and helps highlight companies such as Grosso University that are setting a high standard.
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Power100 is the nation's premier CEO ranking and media platform for the home improvement industry. Using a proprietary 5-layer evaluation system, Power100 identifies and celebrates the top CEOs, companies, and strategic partners driving innovation, customer satisfaction, and leadership excellence across the country.
