In a former plumbing supply company on Massachusetts Ave. in Dorchester, the bones of a big new craft brewery have been set. This will be the home of Dorchester Brewing Company. But it’ll be the home to a host of other breweries, too.

The concept is the brainchild of Matt Malloy and his co-founders. Malloy is a self-described tech nerd who previously served as the VP of marketing and operations at Zipcar for eight years and VP of marketing and communications at edx.org. A longtime lover of craft beer, Malloy’s vision is an ambitious one.

Build a brewery with a bar, and the people will come.

“When you come here, you won’t be coming to just one brewery,” he told me during a recent visit. “You’ll be coming to 10.”

That’s because Dorchester Brewing Company – or DBCo. – will be Boston’s first contract brewery, an arrangement where other breweries can use communal equipment to brew their own brand of beer. The measure of involvement from the parent brewery is a sliding scale, but often it ends at offering up their brew facilities.

But Malloy is taking the definition one step further: This isn’t contract brewing, he said, it’s partner brewing.

The space is cavernous. When I went in March, they’d just finished pouring the high-test epoxy floors (“80 percent of brewing is cleaning,” Malloy said) and were knocking out the front wall to accommodate two huge windows looking out on to Mass. Ave. When all is said and done, the 25,000-square-foot space (including 8,000 for future expansion) will house a 30-barrel industrial brew setup and a 5-barrel pilot system.

It will also be just the second full-pour craft beer taproom in Boston behind Harpoon Brewery, offering 20 tap lines. Trillium Brewing Co. in Fort Point offers growler fills but can’t sell pours on premise. Jamaica Plain’s Samuel Adams offers samples and growler fills, but no pints for sale.

DBCo.’s taproom will be open sometime in June; the production facility will follow sometime in July.

And that’s a big deal. Ask any taproom proprietor and most will tell you a bulk of their business comes from loyal patrons drinking on site. When I recently stopped by Night Shift Brewing in Everett, for example, founder Michael Oxton confirmed that theory. Build a brewery with a bar, and the people will come. It was noon on a Monday, and the stream of patrons was steady.

A taproom is great news for the folks of Dorchester, Boston and beyond eager to try the beers from DBCo. and head brewer Todd Charbonneau, who was the head brewer at Harpoon for a decade. But it’s also great for the partner brewers who will be brewing on site: All of their beers will be in regular rotation at the taproom, too.

“They’re not a client,” Malloy said of the partner brewers he’ll take on. “They’re not a customer.” He wouldn’t give specifics, only that they’re in talks with some “major accounts,” from hobby brewers looking to produce a commercial batch to international breweries intent on cracking the American market. All of them will have access not only to DBCo.’s state-of-the-art equipment, but a range of promotional, educational and distribution services, as well.

Malloy lives in Dorchester, and is intent on making this a brewery first and foremost for his neighbors. The scale of this project has been massive – he’s invested millions into it so far – and he’s turned to local craftsman whenever possible. It’s also evidenced in the name: Dorchester is front and center, and he wouldn’t have it any other way. Malloy and architect Kevin Deabler of RODE Architects even went back and forth with the City of Boston on the sign. After rounds of negotiations, a 24′-by-6′ front-lit “Dorchester” sign in script (pictured above) was approved for the front of the building.

In addition to the taproom bar, there will be a 40-foot bar overlooking the brewery and a smaller 10-foot bar on the side. Malloy and Charbonneau geeked out over a unique tap line at the main bar that’ll let you add nitrogen to a select beer, an innovative way to put a spin on beer styles you’re not used to drinking injected with tiny bubbles.

One final feature particularly important to Malloy was a “trough urinal” as one of the men’s bathrooms. The space will be “extremely bike friendly,” too.

And if all this isn’t enough, a patio will sit out front, offering patrons a beer garden to enjoy when the weather is nice. The common denominator through it all will be the beer.

“When a brewer leaves here,” Malloy said of a partner brewer growing out of the space. “We won’t be crying into our beers. Honestly, we’ll throw a party.”

Boston's first contract brewery and second full-pour taproom.