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Sensei Justin's Community Dojo

5 ★★★★★ 31 Google reviews · Karate dojo in Mahwah, New Jersey

Karate dojo Free trial Affiliated Kids & teens

Affiliated dojo — reviews and the dojo's own info point to a recognized Karate style organization or franchise (think Shotokan/JKA, Kyokushin, Goju-Ryu, Isshinryu, Tiger Schulmann's or Villari's). If lineage matters to you, ask which style and organization the dojo belongs to, and under whom the head sensei earned their black belt.

Plan your first class

  • Free trial / intro class most dojos welcome new students with a free trial or intro class — check their site or give them a call to book your first session
  • Kids & youth classes kids and youth Karate classes — built around discipline, focus, and confidence
  • Today see hours ·
  • Website & schedule senseijustin.com — book classes and see the live schedule
  • Phone +1 845-533-2945

Hours

Monday 4–7 pm
Tuesday 5–8 pm
Wednesday 4–7 pm
Thursday 4–7 pm
Friday 4–7 pm
Saturday 9 am–12 pm
Sunday 9 am–12 pm

Hours shift for holidays, belt tests, and seminars — worth a quick check before a special trip.

The classes they run

Karate classes on the schedule at Sensei Justin's Community Dojo, confirmed in students' own reviews and the dojo's own info — not guessed from the sign out front.

🧒 Kids Karate 22 mentions

“My daughter has been virtually attending Sensei Justin’s classes since the pandemic began, and it’s certainly been one of the positive highlights of the past year.”

All dojos that run kids karate →

Other martial arts here

Karate dojos are usually multi-discipline. Here's what else students mention training under the same roof at Sensei Justin's Community Dojo — mined from their reviews and the dojo's own info.

🏟️ MMA

“By far the best MMA classes for my two young boys (8&11).”

Other dojos that also teach mma →

Disciplines are mined from reviews and the dojo's own info — they show what students have trained, not a formal class guarantee. If you specifically want taekwondo, jiu-jitsu, or kickboxing alongside your Karate, confirm the current schedule with the dojo.

What students say

The things reviewers bring up again and again across 31 Google reviews — in their own words.

expert instruction from a great sensei 11 mentions

“Great dojo, great atmosphere, Sensei is amazing with the kids, understanding and knows just the right way to talk to his students.”

friendly, respectful dojo 7 mentions

“My son loves his classes with Sensei Justin and Sensei Nicole, both of whom are excellent teachers and good people.”

🧒 strong kids program 5 mentions

“My son loves his classes with Sensei Justin and Sensei Nicole, both of whom are excellent teachers and good people.”

clean, welcoming dojo 3 mentions

“Great dojo, great atmosphere, Sensei is amazing with the kids, understanding and knows just the right way to talk to his students.”

💵 good value / fair pricing 2 mentions

“The classes are affordable with very flexible days of attendance.”

builds confidence, discipline & respect 10 mentions

“The focus, determination, and direction of our dojo has returned, and I am very much looking forward to being able to step through the dojo doors once more, where ever they may be.”

From the reviews

Sensei Justin is an incredible teacher. He has so much patience with all of the kids. The dedication that he puts in to each class is so amazing to watch. He helped my daughter open up so much she absolutely loves him & loves attending each class.

★★★★★ — Lisseth, Nov 2020

Sensei Justin has been my son’s karate instructor for five years now. We couldn’t be happier. He is skilled in motivating his students to challenge themselves. We wouldn’t go anywhere else for karate classes. Best program and best value in downtown Suffern, it North Jersey or Rockland County for that matter!

★★★★★ — Rachel, Nov 2020

My son has studied under Sensei Justin for approximately seven years and is now a black belt candidate. Justin and his instructors put their hearts and souls into training their students. Their genuine care for all of their students is what sets them apart from any other dojo.

★★★★★ — Scott, Dec 2020

Those familiar with Morisi's DAS Academy will welcome this familiar but refreshing change to our continuing curriculum. Senseis Justin, Teile, and Nicole have gone above and beyond during this trying time of isolation and virtual training.

★★★★★ — Kieron, Dec 2020

Excerpts from public Google reviews. Read all 31 reviews →

Your first Karate class at Sensei Justin's Community Dojo

Nervous about walking into a Karate dojo for the first time? Almost everyone is, and a good sensei expects beginners to come through the door. Here's what to know. What to expect: a typical first class is a warm-up, then drilling basic stances, blocks, punches, and kicks — not hard sparring. Step to the side whenever you need to; no one will bat an eye. What to wear: athletic wear you can move in (or a gi if you have one); you'll train barefoot. What to bring: water, and a mouthguard if you have one — many dojos lend a loaner gi for a first class, so it's worth asking when you call. As you keep training you'll add your own gi and the belt your dojo awards you. Kumite (sparring) eases in gradually, once your fundamentals are solid. Arrive 10–15 minutes early to sign a waiver and meet the sensei. It gets easier fast — most people feel far more at home by their third class.

Karate is a contact sport. Ease in, train within your limits, listen to your instructors, and if you have any injuries or health concerns, mention them before class and check with a doctor if you're unsure.

Where to find Sensei Justin's Community Dojo

63W Ramapo Valley Rd, Mahwah, NJ07430

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Listing verified July 2026 from public business records and member reviews. Something out of date? Report a correction. Own this dojo? Claim your listing — it's free.