Welcome to 18 Mill Island Road, where one-floor living is at its best, surrounded by woods and the quiet natural beauty of Arrowsic. Set on nearly 4 private acres, this thoughtfully designed home offers over 3,400 square feet of living space with 3 bedrooms, 5 bathrooms, and a layout that seamlessly blends comfort, functionality, and privacy. True one floor living - this custom home includes 3 bedrooms w/ en-suite bathrooms, a chef's kitchen & suite of Viking appliances, open eat-in kitchen, living room with cathedral ceilings, skylights, gas fireplace, brand new hardwood hickory floors (2026), radiant heat, attached 2-car garage w/ direct entry to custom pantry and laundry. Separate formal dining area, finished walkout basement w/ half bath, workshop over the heated garage, automatic generator, wrap-around farmers porch, oversized entertaining deck and above ground pool. Each bedroom has an en-suite bath, or retreat to the oversized primary suite featuring a Jacuzzi tub, multi-nozzle shower, custom built-ins, and a spacious walk-in custom closet. French doors lead directly from the primary suite to an expansive rear deck that spans the entire length of the home, creating a seamless connection to the outdoors. Designed for comfort in every season, the home features radiant floor heating and heat pumps for efficient heating and cooling throughout. The finished daylight walkout lower level provides flexible space for a home office, fitness area, or guest overflow, along with abundant storage. Outside, nature takes center stage. Surrounded by mature trees, peaceful woodland views from every window, the property offers privacy and a true sense of retreat. The expansive rear deck is ideal for entertaining or simply taking in the tranquility of a private wooded setting. Minutes away-Sewall Pond and Reid State Park! A rare opportunity to enjoy comfort, space, and nature in one of Maine's most sought-after coastal communities!
Single-familyProperty Type
2003Year Built
3.8 acresLot Size
$278Price/Sq.Ft.
2 garage spacesParking
Listed by Sarah Singer Ellen Domingos• Portside Real Estate Group
Primary bedroom on the first floor with vaulted and cathedral ceilings, skylight, balcony/deck, built-ins, double vanity, soaking and jetted tubs, separate shower, walk-in closet and suite layout
Two additional first-floor bedrooms with closets and full baths
Bathrooms
Three full bathrooms
Two half bathrooms
Primary bath includes double vanity, soaking tub, jetted tub, separate shower
Kitchen
Eat-in kitchen with breakfast nook and pantry
Skylight in kitchen
Dishwasher
Gas range
Microwave
Refrigerator
Laundry & utility
Main-level laundry with built-ins
Washer and dryer included
Water heater tied to heating system
Flooring
Carpet
Tile
Wood
Luxury vinyl plank
Heating & cooling
Heat pump for heating and cooling
Hot water and radiant heat
Zoned heating
Exterior features
Deck and porch
Fenced yard
Shed(s) on the property
Above-ground pool
Near public beach
Rural, wooded setting
Paved road access
Home design
Single family residence
Built in 2003
3.8-acre lot
Rural Residential 1 zoning
Parking
Attached heated 2-car garage with auto door opener and storage above
Gravel parking offering 5–10 spaces on site, off-street parking and inside entrance
Construction
Wood frame construction with clapboard and wood siding
Shingle roof
Finished full walk-out daylight basement
Utilities
Private well water
Private sewer (septic tank)
Circuit breakers with generator hookup
HOA & community
No pet restrictions
Electricity and solar
View estimated energy costs and solar savings for this home
Spacious Quality construction Contemporary on 5.8 private acres. Gourmet kit. w/ Viking appliances, cherry floors, radiant heat, open concept, each bedroom has own bath.
Year
Property tax
Land + Additions
Assessment*
2025
$6,455 (+7.5%)
$76,700 + $374,700
$451,400
2024
$6,004 (+19.3%)
$76,700 + $374,700
$451,400
2023
$5,033 (+6.7%)
$76,700 + $374,700
$451,400
2022
$4,717
$76,700 + $374,700
$451,400
2021
$4,717 (+9.4%)
$76,700 + $374,700
$451,400
2020
$4,311 (+4.7%)
$76,700 + $374,700
$451,400
2018
$4,119 (+1.8%)
$76,700 + $220,700
$297,400
2017
$4,045 (+1.4%)
$76,700 + $220,700
$297,400
2016
$3,988 (+4.8%)
$76,700 + $220,700
$297,400
2015
$3,807
$76,700 + $220,700
$297,400
2014
$3,807
$76,700 + $220,700
$297,400
Public record
Beds
3
Baths
4
Stories
—
Lot width
—
Lot depth
—
Lot size
6.6 Acres
Year renovated
—
Finished Sq. Ft.
2,992
Unfinished Sq. Ft.
—
Total Sq. Ft.
2,992
Year built
2003
Style
Single Family Residential
County
Sagadahoc County
APN
886534
Parking Spaces
—
Basement
—
Accessible
—
HOA Dues
—
Garage
—
Features
—
Last updated by owner on Jul 27, 2026.
Climate risks
1/10 Flood Factor
Minimal risk of a flood reaching the building in the next 30 years
1/10 Fire Factor
Unlikely to be in a wildfire in next 30 years
4/10 Heat Factor
7 days above 86° expected this year, 18 days in 30 years
6/10 Wind Factor
27% chance of strong winds in next 30 years
2/10 Air Factor
2 unhealthy days expected this year, 2 days in 30 years
Provided by First Street
Historical weather
Arrowsic, ME • 04530
Average low and high temperatures (°F)
29
12
32
11
43
26
53
36
65
47
77
55
80
61
80
55
73
51
61
41
49
31
34
17
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Sun exposure
85/ 100
Very good sunlight
Sunscore
There appears to be minimal shading by surrounding buildings, terrain, and vegetation.
9.6 hrs
5.5 hrs
JuneDecember
Provided by Shadowmap
Redfin Estimate for 18 Mill Island Rd
We cannot show automated home-value estimates for this home.
Nearby homes have recently sold between $425,000 and $1,100,000.
Nearby comparable homes
The Redfin Estimate uses 6 recent nearby sales, priced between $425K to $1.1M.