The North Shore’s #1 Gym for North Shore CrossFit Group Training, Personal Training & Brazilian Jiu Jitsu



The gym is your platform to do great things in life.

Since 2005, we have helped more than 10,000 people begin their fitness journey by providing a forum for learning the foundations of fitness in order to live a healthier and more active lifestyle. Our coaches will develop customized programming in order to help you learn, adapt, and to reach your goals. Whether you’re looking for muscle building, weight loss, athletics, lifestyle coaching, and any other event based training. We offer a solution just for you—and we’ll be cheering you on every step of the way!

North Shore CrossFit Group Training

Workout in a group setting with one of our coaches. From Power & Strength to Skills & Conditioning, the group has you covered.
Classes can work for anyone, regardless of
where you’re at on your fitness journey.

Personal Training

Personalized coaching is the best option to reach any goal; from losing weight, building muscle, refining a skill, or sport specific training. Our Personal Training programs are aimed at your own unique needs with a dedicated coach, just for you.

Brazilian Top Team

BTT North Shore specializes in 
Brazilian Jui Jitsu, mantis boxing, kick boxing, wrestling and other MMA fighting styles.
The BTT academies are inclusive
of both adult and kids training.


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Schedule an intro session to learn how we can help you meet your goals!


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from our members

Testimonials

Dave and his team are absolute fitness professionals. I’ve been to a million gyms as both a member and an instructor. Dave’s team is constantly pushing themselves to learn more and provide better for their clients.

Jake Crandall

When l joined Treehouse, I was over 300 pounds and looking to get fit but did not have much lifting experience. After attending about four classes a week for the last two years, I have dropped over 85 pounds and can physically do things I did not think I would expect be able to do: pull-ups, stretches, clean and jerks, the list could go on and on. Not only do they work on physical fitness, but also mental fitness as well. No matter what level of fitness l was at, the coaches and other members always made me feel included in the Treehouse community.

Alan DeLorenzo

I’ve been active most of my life and decided this was my next step. So glad I tried it! I started and continue my training with Max. He rocks! All the coaches are very positive and and helpful and so are the members. Everyone encourages each other all the time. I have a long way to go but am enjoying the journey.

Maggie Getchell

I won’t lie, I was pretty nervous to first walk in and sign up, but I’m so glad I did! The couches are absolutely wonderful and value proper form, technique, and working on being your best self. The community is amazing and I’ve met so many nice people too! The biggest reason why I love this place? I’ve never pushed myself to overcome goals like this and I’m constantly surprised by what I can do. I’ve never had such confidence and it just keeps getting better. Thank you Treehouse for being an amazing gym, group of teachers, and friends.

Lexy DeRosa

Why Treehouse featured image

Why Treehouse

Proper assessment and an individualized game plan from our personal trainers will help you stay focused on your own unique goals. Treehouse will help you become the best version of yourself possible with programs designed 100% around you.

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Latest Posts From Our Blog

Education and coaching that goes beyond workouts. Read our articles about overall wellness, nutrition, recovery, building healthy habits, and how to develop an active lifestyle in our blog.

Neil’s Meals: Simple Veggie Prep

A simple veggie roast that you can add to your daily meals as you go. If you’re prepping proteins as well you can throw these two together at anytime and you’ve got a meal! Items needed: 1 Sheet pan/Cookie Sheet etc Veggies of choice (Here we have cherry tomatoes, zucchini red onions and bell peppers!) 1-3 TBS of Oil of choice (suggested olive or avocado) Seasonings: oregano, garlic powder and some salt and pepper Directions: Preheat… Read More

Will Lifting Weights Make Me Bulky?

This is a question that we come across often when discussing exercise prescription for a client. Usually the question is posed by a woman, but not always. When asked this question, usually the picture one has in her head is such as to the left. (photo courtesy of femalemuscleguide.com) My immediate response is that it depends. This response either provokes curiosity or frustration from the client. I can understand those emotions because so much information… Read More

Chronic Inflammation Tips

Get Inflammation Under Control Chronic inflammation has been shown to be the root cause to many serious medical conditions. This includes, cardiovascular disease, cancer, asthma, diabetes and autoimmune diseases. In addition to all of this, chronic inflammation makes you more vulnerable to viruses such as COVID-19, the flu, and the common cold. Guess what! You can have a dramatic influence in dialing that inflammation back and restoring some balance. Here are some tips… FOOD –… Read More