Castine: 25 Water Street: Castine's Original Tiny House circa 1920's previously housing the Telephone Office and a Barber Shop. Building was totally gutted and renovated in 2000. Top floor is an open floor plan with kitchen/dining/living room area all opening up to the waterside porch which over looks Castine Harbor. The lower level has a bedroom with walk in closet, laundry and full bath. Guest house has a second bedroom with its own full bath. Property is well landscaped with attractive stone walls, mature plantings and private lower deck area. Water access directly across Sea Street. Automatic Generator. House being sold furnished. Artwork not included. Perfect shore stop for a visiting yachtsman. $675,000.
Single-familyProperty Type
1920Year Built
1,742 sq ftLot Size
$666Est. Price/Sq.Ft.
Listed by Karen Koos• Saltmeadow Properties, Inc.
Bought with Lisa Haugen• Saltmeadow Properties, Inc.
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Market trends in 04421, ME
Last updated August 2026
Buyer's Market
Seller's Market
Balanced market
Sale-to-List Price
101.8%
+10.4% MoM
Median sale price
$585K
$78K MoM
Avg. days on market
80d
105 days MoM
Recently sold homes
3
1 MoM
Provided by Redfin
Sale history for 25 Water St
Date
Event
Price
MREIS #1568567
Nov 29, 2023
Sold
$650,000
$747/sq ft
Aug 13, 2023
Listed
$675,000
$776/sq ft
Year
Property tax
Land + Additions
Assessment*
2025
$4,363 (+13.7%)
$263,600 + $140,400
$404,000
2024
$3,838 (+6.2%)
$263,600 + $140,400
$404,000
2023
$3,613 (+5.7%)
$199,700 + $106,500
$306,200
2022
$3,419 (+14.0%)
$171,600 + $91,400
$263,000
2021
$2,998
$171,600 + $91,400
$263,000
2020
$2,998 (−3.0%)
$171,600 + $91,400
$263,000
2018
$3,090
$171,600 + $91,400
$263,000
2017
$3,090 (+4.5%)
$171,600 + $91,400
$263,000
2016
$2,956
$201,900 + $107,600
$309,500
2015
$2,956
$201,900 + $107,600
$309,500
2014
$2,956 (+2.7%)
$201,900 + $107,600
$309,500
2013
$2,878
$201,900 + $107,600
$309,500
Tax history for 25 Water St
Year
Property tax
Land + Additions
Assessment*
2025
$4,363 (+13.7%)
$263,600 + $140,400
$404,000
2024
$3,838 (+6.2%)
$263,600 + $140,400
$404,000
2023
$3,613 (+5.7%)
$199,700 + $106,500
$306,200
2022
$3,419 (+14.0%)
$171,600 + $91,400
$263,000
2021
$2,998
$171,600 + $91,400
$263,000
2020
$2,998 (−3.0%)
$171,600 + $91,400
$263,000
2018
$3,090
$171,600 + $91,400
$263,000
2017
$3,090 (+4.5%)
$171,600 + $91,400
$263,000
2016
$2,956
$201,900 + $107,600
$309,500
2015
$2,956
$201,900 + $107,600
$309,500
2014
$2,956 (+2.7%)
$201,900 + $107,600
$309,500
2013
$2,878
$201,900 + $107,600
$309,500
*Taxable value of land and structures on it ("additions") is determined regularly by local assessors and does not affect market price.
Public record
Beds
—
Baths
—
Stories
—
Lot width
—
Lot depth
—
Lot size
1,742 Sq. Ft.
Year renovated
—
Sq. Ft.
—
Year built
—
Style
Other
County
Hancock County
APN
463511
Parking Spaces
—
Basement
—
Accessible
—
HOA Dues
—
Garage
—
Features
—
Last updated by owner on Jul 27, 2026.
Property details
Parking
Parking Information
Parking Features: No Driveway, On Street
Interior
Virtual Tour
Bathroom Information
# of Baths (Full): 2
Room 1 Information
Type: Bedroom 1
Level: First
Room 2 Information
Type: Bedroom 2
Level: First
Room 3 Information
Type: Great Room
Level: Second
Basement Information
Basement Entry: Interior, Partial, Unfinished
Interior Features
# of Rooms: 3
Interior Features: Bathtub
Washer, Refrigerator, Gas Range, Dryer, Dishwasher
Flooring: Wood, Carpet
Exterior
Building Information
Construction Materials: Shingle Siding, Clapboard, Wood Frame
Roof: Shingle
Total Building Area (Sq. Ft.): 870
Building Area Source: Public Records
Exterior Features
Patio & Porch Features: Deck
Property Information
Property Sub Type: Single Family Residence
Year Built: 1920
Above-Grade Finished Area (Sq. Ft.): 870
Lot Information
Lot Size (Sq. Ft.): $1,742.40
Lot Size (Acres): 0.04
Lot Size Source: Public Records
Lot Features: Well Landscaped, Intown, Near Golf Course, Near Public Beach, Near Shopping, Neighborhood
Zoning: Commercial
Waterfront Information
Water Body Name: Castine Harbor
Water Body Type: Harbor
Water View: Yes
Financial
Tax Information
Annual Tax Amount: $3,419
Tax Year: 2022
Utilities
Utility Information
Has Heating
Heating: Hot Water, Direct Vent Heater, Baseboard
Has Cooling
Cooling: Heat Pump
Electric: Circuit Breakers
Sewer: Public Sewer
Water Source: Public
Water Heater: Electric
Location
Location Information
Unparsed Address: 25 Water Street, Castine, ME 04421
Directions: From Battle Avenue, turn onto Main Street. At the bottom of Main Street, turn left on Water Street. First house beyond the Brick Block building.
Public facts
Beds: —
Baths: —
Sq. Ft.: —
Stories: —
Lot Size: 1,742 square feet
Style: Other
Year Built: —
Year Renovated: —
County: Hancock County
APN: 463511
Home facts updated by county records on Jul 27, 2026
Around this home
Schools
Adams School
Public PreK-8 • Assigned • 0.2mi
Provided by GreatSchools
Lifestyle
Provided by Walk Score and Local Logic
Historical weather
Castine, ME • 04421
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Sun exposure
Try the sun simulator tool to see how light moves across the property at different times of day and year.
Provided by Shadowmap
Estimated sale price
$551,000 – $667,000
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