Underground Legacy Dispensary in Mattapan MA

Underground Legacy, a Mattapan story

Some dispensaries land in a neighborhood. Underground Legacy Dispensary in Mattapan MA grew out of one. The shop at 1379 Blue Hill Avenue in Mattapan was brought to life by a man who grew up a few steps away, in a building he remembers visiting, and it opened with a promise to clean up the corner and give back to the people around it.

Underground Legacy calls itself a place for cannabis culture that connects tradition and innovation, with a “welcoming, no-pressure shopping experience” for longtime consumers and first-time visitors alike. Its tagline sums up the mission: “Bridging Communities with Quality and Inclusivity.” If you live in Mattapan, or you are passing through on Blue Hill Avenue, here is what to know before you go.

A Mattapan native comes home

The force behind Underground Legacy is Isaac Hampton, a Mattapan native. When the proposal first went before the neighborhood, the Dorchester Reporter described Hampton as someone who “is now in the real estate business,” leading the project with business partners Jon and Kim Napoli.

Hampton grew up on Walk Hill, and the store sits on Blue Hill Avenue at Walk Hill Street. He told the Dorchester Reporter in December 2023 that he remembered the building as a record store and gift shop he used to visit. Before the dispensary moved in, the site housed Blue Hill Sounds & Gifts and Kings & Kweens Unisex Salon, right across from the Mattapan Branch Library.

Hampton described his plan as a “mom and pop” dispensary, and he made it clear he wanted to support small vendors. “We’re small and mighty and want to work and support that market,” he told the paper.

Cleaning up the corner

The building had not been well kept when Hampton took it on. He cleaned it up and brought in local artwork by Ds7 and Art by Nau, according to the Dorchester Reporter. Taking care of the block was part of the deal with neighbors. “We agreed to clean up this corner; there were a lot of maintenance issues not being dealt with,” Hampton said.

The result is a detached, freestanding building with its own parking lot, a rare thing on this stretch of Blue Hill Avenue. When the Dorchester Reporter wrote about it in late 2023, it noted that Underground Legacy was likely to be the only dispensary on the Mattapan section of Blue Hill Avenue for some time.

Open since April 2024

The Massachusetts Cannabis Control Commission lists 1379-1385 Blue Hill Ave as an active, licensed adult-use cannabis retailer, open since April 1, 2024. State licensing data also shows the shop came through the Commission’s social equity program.

The party came a few weeks later. In the store’s own words, “Underground Legacy opened its doors a little over a year ago, with the Grand Opening celebration held on April 20th, 2024.” A year later, on April 20, 2025, the shop threw a first anniversary and 420 celebration with music, free lunch from Redbones BBQ, ice cream sandwiches from the Cookie Monstah truck, and Underground Legacy T-shirts, hoodies and lighters for loyal customers.

A voice for change in Mattapan

Underground Legacy is open about why it exists. On its About page, the store calls Mattapan one of many Boston communities hit hard by the war on drugs, and it says those campaigns harmed Black, Indigenous and people of color, along with low-income residents of Mattapan and Greater Boston.

The store says it wants to spark conversation about the racial and economic history of cannabis, promote safe and equal access to quality products, and help people make the move from the legacy market to the regulated one. It also says it works with small growers who bring experience from the old market into the legal one.

Community programs

Underground Legacy runs several programs that go well beyond the sales counter.

Community clean ups. Staff and resident volunteers pick up litter on the streets around the store. The store says “The goal of this program is to increase property values and curb appeal throughout the neighborhood.”
Business Mentorship Program. The store offers help to minority entrepreneurs who want to start a business, with support on business plans, pitch decks, fundraising, and the cannabis licensing process. Sign up is rolling, so you can enroll any time.
The “Can I Live” program. In the store’s words, “The ‘Can I Live’ program centers the needs of women of color.” Underground Legacy plans two clinics a year on the risks of cannabis use during pregnancy, and participants can receive free doula or midwife services.

What’s on the menu

The Underground Legacy menu covers flower, pre-rolls, vaporizers, edibles, concentrates, tinctures, topicals and accessories. Online, you can shop by category, by strain, or by effect, and filter by THC level. The store’s FAQ breaks THC into three easy bands: low is up to 15 percent, medium is 16 to 25 percent, and high is 26 percent or more. There is also a “$20 and Under” section for shoppers watching their budget, plus bundles and weekly specials.

Every product, the store notes, is lab-tested to Massachusetts standards.

Order online, pick up in Mattapan

Underground Legacy has an Order Online button on its website. Browse the menu, add items to your cart and check out, then pick up at the Mattapan store. Bring a valid government-issued ID when you arrive, and staff will verify it and finalize the purchase in store. The store says delivery is not currently offered.

Loyalty that adds up

The Underground Legacy loyalty program is simple. You earn one point for every dollar you spend, and you get 25 points just for signing up. Points turn into dollars off, starting at $5 off for 125 points, with bigger rewards as you climb. First-time customers can also save 20 percent off an order of regular-priced items when they sign up for the loyalty program, applied in store.

Good to know before you go

Underground Legacy keeps its policies clear and posted on its website.

Payment. Cash and debit cards are accepted, and there is an ATM on site.
Out-of-state visitors. Welcome, as long as you are 21 or older with a valid government-issued ID.
Returns. Unused, unopened products with readable, untampered labels, and defective products, can be exchanged within 48 hours with a receipt. Exchanges are for the same item or one of equal or lesser value and are subject to approval.
Flower or pre-rolls? The FAQ explains it for beginners: flower is loose cannabis, while pre-rolls are ready-to-use joints.

Plan your visit

Address. 1379-1385 Blue Hill Ave, Boston (Mattapan), MA 02126.

Hours. Monday through Saturday, 10am to 9pm. Sunday, 10am to 6pm.

Phone. (781) 663-0885.

Parking. Ample on-site parking.

Public transit. A bus stop sits right in front of the store, with another directly across the street. Mattapan station, with more bus lines and trolley service, is about a 7-minute walk.

Payment. Cash and debit, with an ATM on site.

Adults 21+. Bring a valid government-issued photo ID showing you are 21 or older.

Massachusetts cannabis basics

Here are the state rules from the Cannabis Control Commission:

Age. 21 or older, with a government-issued ID for every retail purchase.
Carrying. Up to two ounces in public.
At home. Up to 10 ounces, and anything over two ounces must be locked up.
Where to use it. Not in public places and not on federal land.
In the car. No open containers in the passenger area. Use a closed container in the trunk or a locked glove compartment, and never drive under the influence.
State lines. It is illegal to take cannabis out of Massachusetts, and it cannot be mailed.

Your first visit, step by step

Check the menu online. Browse by category, strain or THC level, and look at the specials.
Order ahead if you like. Check out online and pick up at the store.
Bring your ID and payment. A valid government-issued photo ID, plus cash or a debit card. There is an ATM on site.
Join the loyalty program. New members get 25 points, and first-timers can save 20 percent on regular-priced items.
Ask the staff. Tell them what you are looking for and take your time. No pressure here.

Make a day of it in Mattapan

Mattapan is a Boston neighborhood with deep roots. Its name comes from the Massachusett language, for the land north of the Neponset River, and it may mean “a place to sit.” The area was part of the territory of the Neponset sachem Chickatawbut, and it was annexed into Boston on October 7, 1870. The neighborhood had 36,480 residents at the 2010 census.

Mattapan is home to the largest Haitian community in Massachusetts. Mattapan Square, where Blue Hill Avenue, River Street and Cummins Highway meet, is the commercial heart of the neighborhood.

Right across the street from the store, the Mattapan Branch of the Boston Public Library opened on February 28, 2009, at 1350 Blue Hill Avenue. A short trip away, the Mattapan Line trolley runs between Mattapan and Ashmont, and the Fairmount Line commuter rail stops at Morton Street and Blue Hill Avenue stations.

There is plenty of green nearby too. The Boston Nature Center and Wildlife Sanctuary covers 67 acres. Harambee Park, designed by Frederick Law Olmsted and built in 1898, sits next to the neighborhood. Forest Hills Cemetery, founded in 1848, is listed on the National Register of Historic Places, and the Franklin Park Zoo, founded in 1912, is close by for a family day out.

Why Underground Legacy is worth the stop

A Mattapan native bringing his old corner back to life, local art on the walls, a parking lot on Blue Hill Avenue, clean ups, mentorship and programs built for the people who live here: Underground Legacy is a neighborhood shop with a purpose. Stop in, say hello, and see what a hometown legacy looks like.

Cannabis is for adults 21 and over. Please consume responsibly.