Step back to a time when St. Lawrence River summers were measured by the sound of passing ships, sunsets from the porch, and generations gathering under one roof. This timeless early-1900s Round Island cottage, ‘ Sonnenklang’ is more than a home, it is an invitation to continue a cherished Thousand Islands tradition. Beautifully preserved with its original woodwork, exquisite central staircase, stained glass window, and craftsmanship are rarely found today. Cedar shake cottage captures the character and warmth of a bygone era. Offering five bedrooms on the second floor, an additional first-floor bedroom, a full bath on the main level and a half bath upstairs, there's room for family and friends to gather comfortably for summers to come. The formal dining room is ready for memorable dinners, while the spacious kitchen features a walk-in pantry, adjoining storage and laundry room, and a back staircase to the second floor, a reminder of the home's historic design. A fireplace in the living room provides warmth on chilly nights. Stretching across the front of the home, the expansive covered porch becomes the heart of the cottage, where you'll enjoy breathtaking sunsets, watch freighters and pleasure boats glide along the channel, experience the peaceful rhythm of river life. Protected dockage makes boating effortless. The detached garage offers abundant storage today and exciting possibilities for future guest accommodations, while the full attic presents additional potential to expand and customize the home to your vision. Offered fully furnished and turnkey, this exceptional property allows the next owner to begin making memories from day one. Round Island itself is one of the Thousand Islands' most treasured communities, featuring a post office, tennis court, scenic walking trails, and a welcoming summer neighborhood. Being just a short boat ride from Clayton and the mainland. Rarely does an authentic Thousand Islands cottage of this caliber become available. Whether preserved in its timeless elegance or thoughtfully enhanced for future generations, this remarkable property is a blank canvas for creating the next chapter of unforgettable summers on the river.
Pending
$799,800
15463 Round Is, Frontenac, NY 13624
6beds
2,135sqft
Single Family Residence
Built in 1900
0.74 Acres Lot
$-- Zestimate®
$375/sqft
$-- HOA
What's special
Additional first-floor bedroomHalf bath upstairsExquisite central staircaseCedar shake cottageStained glass windowFormal dining roomWalk-in pantry
- 75 days
- 92
- 2
Zillow last checked:
Listing updated:
Listed by:
Four Seasons Sotheby's Inter. 518-580-8500,
Robin Gedney Lucas 518-580-8500
Source: NYSAMLSs,MLS#: S1696316
Originating MLS: Syracuse
Facts & features
Interior
Bedrooms & bathrooms
- Bedrooms: 6
- Bathrooms: 2
- Full bathrooms: 1
- 1/2 bathrooms: 1
- Main level bathrooms: 1
- Main level bedrooms: 1
Heating
- Other, See Remarks, None
Appliances
- Included: Dryer, Electric Oven, Electric Range, Electric Water Heater, Microwave, Refrigerator, Washer
- Laundry: Main Level
Features
- Separate/Formal Dining Room, Furnished, Separate/Formal Living Room, Living/Dining Room, Other, Pantry, See Remarks, Storage, Walk-In Pantry, Natural Woodwork, Bedroom on Main Level, Workshop
- Flooring: Hardwood, Varies, Vinyl
- Windows: Leaded Glass, Storm Window(s), Wood Frames
- Basement: None
- Number of fireplaces: 1
- Furnished: Yes
Interior area
- Total structure area: 2,135
- Total interior livable area: 2,135 sqft
Video & virtual tour
Property
Parking
- Total spaces: 1
- Parking features: Detached, Garage, No Driveway
- Garage spaces: 1
Features
- Levels: Two
- Stories: 2
- Patio & porch: Covered, Open, Porch
- Exterior features: Dock, See Remarks
- On waterfront: Yes
- Waterfront features: Beach Access, Deeded Access, Dock Access, River Access, Stream
- Body of water: Saint Lawrence Seaway
- Frontage length: 157
Lot
- Size: 0.74 Acres
- Dimensions: 156 x 257
- Features: Other, Rectangular, Rectangular Lot, See Remarks
Details
- Additional structures: Barn(s), Outbuilding
- Parcel number: 2232890200070001014000
- Special conditions: Standard
Construction
Type & style
- Home type: SingleFamily
- Architectural style: Cottage,Two Story
- Property subtype: Single Family Residence
Materials
- Stone, Wood Siding, Copper Plumbing
- Foundation: Pillar/Post/Pier
- Roof: Asphalt,Metal
Condition
- Resale
- Year built: 1900
Utilities & green energy
- Sewer: Septic Tank
- Water: Lake, River
- Utilities for property: Electricity Connected, High Speed Internet Available
Community & HOA
Community
- Subdivision: Round Island Park
HOA
- Amenities included: Other, See Remarks, Tennis Court(s)
Location
- Region: Frontenac
Financial & listing details
- Price per square foot: $375/sqft
- Tax assessed value: $615,000
- Annual tax amount: $9,346
- Date on market: 7/17/2026
- Cumulative days on market: 74 days
- Listing terms: Cash,Conventional
Estimated market value
Not available
Estimated sales range
Not available
Not available
Price history
| Date | Event | Price |
|---|---|---|
| 7/24/2026 | Pending sale | $799,800$375/sqft |
Source: | ||
| 7/17/2026 | Listed for sale | $799,800$375/sqft |
Source: | ||
Public tax history
| Year | Property taxes | Tax assessment |
|---|---|---|
| 2025 | -- | $615,000 |
| 2024 | -- | $615,000 |
| 2023 | -- | $615,000 +51.2% |
| 2022 | -- | $406,700 |
| 2021 | -- | $406,700 |
| 2020 | -- | $406,700 |
| 2019 | -- | $406,700 |
| 2018 | -- | $406,700 |
| 2017 | $8,108 | $406,700 |
| 2016 | -- | $406,700 |
| 2015 | -- | $406,700 |
| 2014 | -- | $406,700 |
| 2013 | -- | $406,700 -3.4% |
| 2012 | -- | $421,100 |
| 2011 | -- | $421,100 |
| 2010 | -- | $421,100 |
| 2009 | -- | $421,100 |
| 2008 | -- | $421,100 +181.7% |
| 2007 | -- | $149,500 +7.2% |
| 2006 | -- | $139,500 |
| 2005 | -- | $139,500 |
| 2004 | -- | $139,500 |
| 2003 | -- | $139,500 |
| 2002 | -- | $139,500 +8.6% |
| 2001 | -- | $128,400 |
| 2000 | -- | $128,400 |
Find assessor info on the county website
Monthly payment
Climate risks
Neighborhood: 13624
Nearby schools
Schools provided by the listing agent
- District: Thousand Islands
Source: NYSAMLSs. This data may not be complete. We recommend contacting the local school district to confirm school assignments for this home.






