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Our Company

Over 65 Years of Proud Service

to the muskoka community

At Chamberlain Timber Mart, we believe in providing our customers with the best quality materials and service. We stock a wide range of lumber and building materials to suit your needs, and our experienced staff are always available to answer any questions you may have. Our fleet of trucks are always on the move, and our two boom trucks are able to deliver your materials to anywhere in Muskoka. We are dedicated to serving the Muskoka community and look forward to continuing the legacy of quality and service that Tom Chamberlain started back in 1951.



At Chamberlain Timber Mart, we understand that building a cottage in Muskoka requires a special knowledge that you won't find anywhere else. We've been helping people build their dreams in the area for over 65 years, and we have the expertise to help you make your project a reality. Our experts can provide you with the materials you need to complete your project, and we offer free, no-obligation estimates. Whether you're starting from the bottom with a Fox Block ICF foundation or finishing up with the shingles on your roof, the experts at Chamberlain Timber Mart have you covered.




We understand that when it comes to engineered wood products, you need the best quality and the best service. That's why we are dedicated to providing our customers with the highest quality LP Solid Start I-Joist and LVL engineered wood products. Our knowledgeable and experienced staff can provide you with design and calculation services for LVL engineered beams and joists, so you can be sure that your project will be built to the highest standards. Visit us today and see how our experts can help you bring your project to life.



At Chamberlain Timber Mart, we take pride in providing high-quality lumber that is perfect for any building project. Our lumber is sustainably sourced from trusted mills, ensuring that our customers get the best products available. We carry a range of standard lumber and building materials, including Hemlock, Fir, and Sienna Pressure Treated 4′′ x 8", 6′′ x 6", and 6′′ x 8" fir timbers up to 40 feet long. We make it easy for our customers to get what they need with convenient pick-up or delivery options.



We understand that every lakefront property is unique and requires a custom solution. Our experienced team will work with you every step of the way to ensure that the floating dock you purchase is the best fit for your needs. We take pride in providing quality workmanship and superior customer service. Our docks are made from the highest quality materials and designed to last. Plus, you can rest assured that they will be able to stand up to the toughest of winds and waves. So don't wait any longer, call us now at 705-687-4007 and let us help make your lakefront property perfect!

Charity Events

Inspiring Change

Over the Years

Chamberlain Timber Mart is happy to rock on and help contribute to providing comfortable amphitheater seating for the Gull Lake Park Barge!
We ended up surpassing our goal of $2000 as well so thank you to everyone who contributed to a great cause! Overall, GAP raised over $140,000 to help support those facing food insecurity, transportation barriers and/or mental wellness challenges.
Building Futures In Gravenhurst 2023, Two Local Businesses Pledge $70,000

Building Futures In Gravenhurst 2023, Two Local Businesses Pledge $70,000

Discover Center Kidzone
Discover Center Kidzone
The Rotary Club of Gravenhurst was excited to cut the ribbon on the newest addition to KidZone at the Muskoka Discovery Centre. Along with support from Chamberlain Timber Mart and CedarCoast Timber Homes, this unique reading area was constructed in the fun kid area of the Discovery Centre.
Camp Winston Fundraiser 2021
Camp Winston Fundraiser 2021
With the help of Everyone in the Community and TimberKids Foundation we where able to raise $5000 on August 19th, 2021 for Camp Winston.
  • Gravenhurst Against Poverty
    • We walk through the cold and dark on February 26, 2022 to declare our concern for people who have no home and take shelter in nooks and crannies.

    • We walk for those whose days are a battle to house and feed their families and whose nights are filled with fear and frustration.

    • We walk for those driven from home by violence and abuse. And we walk for people overwhelmed by isolation, guilt, and despair.

    • We walk humbly, realizing that anyone can lose their footing and then lose everything else.

    • Each step we take brings someone closer to safety, health and home, as together, we raise funds for organizations whose commitment and work transforms peoples’ lives.

      Website: Coldest Night of the Year

    — Gravenhurst Against Poverty Proud Supporters Since 2019
  • Gravenhurst High School Bursary Fund

    The G.H.S. Bursary Fund is a Charitable Organization set up to help G.H.S. graduates with financial assistance in their first year of post-secondary education.

    Gravenhurst High School Website

    — Gravenhurst High School Bursary Fund Proud Supporter for over 10 Years
  • Camp Winston

    Camp Winston offers summer camp programs and weekend retreats throughout the year for campers aged 7-13 across Canada, as well as a Teen Program and weekend retreats for campers aged 14-17. Campers have a complex combination of neurobiological disorders, which include:

    •  Autism Spectrum Disorders       

    • Attention Deficit Hyperactivity Disorder       

    • Tourette’s Disorder       

    • Learning Disabilities       

    • Obsessive Compulsive Disorder and other anxiety disorders       

    • Oppositional Defiant Disorder

    Most of our campers experience two or more of these challenges and, in most cases, their condition is so severe they would not be welcome at another summer camp. At Camp Winston, everyone is welcome. Period.

    — Camp Winston Proud Supporter's since 2021
  • Habitat For Humnity

    What is Habitat for Humanity?

    Habitat for Humanity is a nonprofit housing organization working in local communities across all 50 states and in more than 70 countries around the world. Habitat’s vision is of a world where everyone has a decent place to live. Habitat works toward this vision by building and improving homes in partnership with individuals and families in need of a decent and affordable place to live.

    December 2022 Donation - Muskoka 411

    — Habitat For Humnity Proud Supporter Since 2022

Head Office

1091 Chamberlain Drive Gravenhurst

Ontario, Canada P1P1A2

Tel: 705.687.4007 

Toll-free: 1.800.361.0034

Fax: 403.717.1997