3 upcoming open houses
Drop in during an open house, or tour online — no appointment needed.
- Open houseDate TBDTime TBD
- Open houseDate TBDTime TBD
- Open houseDate TBDTime TBD
What this listing tells us
Welcome to unmatched privacy and postcard views on this extraordinary private island retreat just minutes from Gravenhurst. Located a mere 1-minute boat ride from the Villas Marina of Lake Muskoka and only 2 hours from the GTA, this spectacular turnkey property offers the ultimate Muskoka experience with convenience, comfort, and total seclusion. Built in 2005, the Viceroy-style main cottage features 3 bedrooms and 1.5 baths, designed with soaring vaulted wood ceilings and a bright, airy open-concept layout. The upper level features a Great Room that seamlessly blends living, dining, and kitchen spaces - all surrounded by walls of windows that frame the panoramic lake views. A cozy wood stove provides warmth on chilly evenings, and every single window in the cottage offers stunning water views. Enjoy incredible indoor-outdoor living with a wraparound upper deck perfect for lounging or entertaining, and a covered lower porch with walkouts from the bedrooms -ideal for quiet mornings and peaceful evenings. Additionally there is a fully equipped workshop that could easily be converted into additional living space, a classic cedar sauna, 2-slip boathouse, a Bunkie that needs some TLC but has a great location on the south end of the island and multiple docks, offering flexible space for guests, hobbies, or storage. This island is facing west, offering unbeatable sunsets every evening. Being sold completely turnkey, just bring your suitcase and groceries - everything else is already in place for the perfect summer escape! Rarely does a property of this caliber and privacy become available on Lake Muskoka. Whether you're seeking a family compound, a peaceful getaway, or a long-term investment in prime Muskoka waterfront, this private island sanctuary offers it all. Don't miss this once-in-a-lifetime chance to own your very own piece of Muskoka paradise. Silence, space, and soul: the magical private island life!
Cleaned for readability — original MLS® text was lightly de-abbreviated and decapitalized.
Listing, price, and tax history
Every previous listing of this property, every list-price change, and 5 years of estimated annual property tax — switch tabs to drill in.
| Date | Event | Status | Price | Change | MLS® | View |
|---|---|---|---|---|---|---|
| Jun 16, 2026 | Previously listed | New | $1,895,000 | — | X13458660 | View |
| Jul 10, 2025 | ListedCurrent | For sale | $1,999,000 | — | X12280494 | This page |
Inside this property
Systems, finishes, room dimensions, and building information — pulled from the full MLS® feed.
Features & systems
Heating, cooling, parking, exterior, lot, possession, and more.
Systems
4- Heating
- Baseboard
- Air conditioning
- None
- Water source
- Other
- Sewer
Getting around, schools & the block
Walkability and transit, the nearest schools, an interactive map of the exact spot, and what's nearby.
Points of interest classified by the MLS® feed.
- Island
- Lake Access
- Marina
- Wooded/Treed
The money — monthly cost, mortgage & return
Everything financial in one place: what you'd pay each month, a live mortgage calculator at the asking price, and what it could return as a rental.
Cost of ownership
A monthly snapshot at typical assumptions — personalize the mortgage just below.
How this home sits in the Gravenhurst market
Live neighbourhood stats, the closed sales you'd negotiate against, and comparable active listings.
The Gravenhurst market right now
Average sold price, days on market, and closed-transaction count for Gravenhurst — sourced from MLS®.
- Avg sold price$980,217Last 30 days
- Median sold price$690,000Middle of the market
- Days on market32 dAvg from list to close
- Closed last 30d62MLS® transactions
We'll get you into 1 Diamond Island — the seller pays our commission
On every MLS® listing in Canada, the seller's brokerage pays a cooperating commission to whoever brings the buyer. Buyer representation is free to you.
$0 to you. The seller pays our fee.
On every MLS® listing in Canada, the seller's brokerage advertises a cooperating commission for the buyer's agent. A Coldwell Banker Summit Realty agent represents you — you owe us nothing.
Property flags & disclosures
An automated scan of public records and news for anything a buyer should know about this specific address — liens, outstanding work orders, or stigma-related history. We never invent flags.
We scanned public records and news for liens, outstanding work orders, and stigma-related history (e.g. a former grow-op or fire) at 1 Diamond Island and found nothing flagged. We re-check automatically as new records publish.
Common questions about this property
Tap a question to expand the answer. Short, direct answers tuned for AI search and voice assistants.
How much is 1 Diamond Island listed for?
1 Diamond Island is listed at $1,999,000 on the MLS® (listing X12280494). The price refreshes on Summitly within minutes of any MLS® change.
How many bedrooms, bathrooms, and square feet does 1 Diamond Island have?
Coldwell Banker Summit Realty is a RECO-licensed Ontario real estate brokerage, independently owned and operated. Mortgage financing is arranged through Mortgage Squad Advisors. Summitly is the technology platform that powers this site. Listing data is sourced from MLS® and is provided for informational purposes only — not guaranteed accurate by the MLS® or its members. The trademarks REALTOR®, REALTORS®, and the REALTOR® logo are controlled by the Canadian Real Estate Association (CREA) and identify real estate professionals who are members of CREA. The Coldwell Banker® name and logo are trademarks of Coldwell Banker Real Estate LLC.
