Beautiful post and beam home set on 1.25 well-kept acres with a four-car garage and separate in-law apartment. Welcome to 23 Bonnie Lane, a spacious three-bedroom, three full bath home featuring a full in-law apartment and offering three levels of comfortable living, enjoyment, and ample room to entertain. Warm wood beams and cathedral ceilings create timeless character throughout the main house. The open concept kitchen and dining area flow into a step-down living room featuring a woodstove with brick hearth and chimney. The spacious main floor primary bedroom is bright and inviting, enhanced by recently added transom windows and an ensuite bath with tile shower and double vanity. A guest bedroom with beamed ceiling and built-ins, full hall bath and convenient first-floor laundry complete the main level. The second floor suite offers a kitchenette, desk area, generous sleeping space and full bath. The finished basement provides additional entertaining space with v-match finishes and a dedicated gym area. A mudroom connects to four heated garage bays with heat pumps and automatic openers for year-round comfort. Above the garage, a fully equipped in-law apartment includes a full kitchen with dishwasher, heat pump, full bath, laundry and private balcony. Outside, enjoy a fenced yard, paved driveway, large deck and a 16-person swim spa with pergola, plus wood and tractor sheds. Conveniently located just 20 minutes to Camden or Rockland and under an hour to Augusta. Several freshwater ponds and lakes are nearby, along with abundant opportunities for fishing, hiking and outdoor recreation. Virtual tour available.
Closed
$668,000
23 Bonnie Lane, Union, ME 04862
4beds
3,596sqft
Single Family Residence
Built in 1991
1.25 Acres Lot
$669,500 Zestimate®
$186/sqft
$3,610 Estimated rent
Home value
$669,500
$636,000 - $703,000
$3,610/mo
Zestimate® history
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List your homeWhat's special
Four-car garageFenced yardRecently added transom windowsDedicated gym areaFull hall bathSeparate in-law apartmentLarge deck
Zillow last checked:
Listing updated:
Listed by:
Legacy Properties Sotheby's International Realty
Bought with:
RE/MAX JARET & COHN
Source: Maine Listings,MLS#: 1652563
Facts & features
Interior
Bedrooms & bathrooms
- Bedrooms: 4
- Bathrooms: 4
- Full bathrooms: 4
Primary bedroom
- Features: Cathedral Ceiling(s), Closet, Double Vanity, Full Bath, Separate Shower, Suite, Vaulted Ceiling(s)
- Level: First
Bedroom 1
- Features: Built-in Features, Closet, Full Bath, Separate Shower
- Level: Second
Dining room
- Features: Cathedral Ceiling(s)
- Level: First
Exercise room
- Level: Basement
Other
- Features: Four-Season, Closet, Eat-in Kitchen, Full Bath, Heated, Kitchen Island, Above Garage, Balcony/Deck, Breakfast Nook, Storage, Stairway, Cathedral Ceiling(s), Laundry/Laundry Hook-up, Separate Shower, Suite
- Level: Second
Kitchen
- Features: Cathedral Ceiling(s), Kitchen Island
- Level: First
Living room
- Features: Cathedral Ceiling(s), Heat Stove, Sunken/Raised
- Level: First
Mud room
- Level: First
Office
- Features: Built-in Features
- Level: First
Other
- Features: Rec Room
- Level: Basement
Heating
- Baseboard, Heat Pump, Hot Water, Zoned
Cooling
- Heat Pump
Appliances
- Included: Dishwasher, Dryer, Microwave, Electric Range, Gas Range, Refrigerator, Washer, Other
Features
- 1st Floor Bedroom, 1st Floor Primary Bedroom w/Bath, In-Law Floorplan, One-Floor Living, Shower, Storage, Primary Bedroom w/Bath
- Flooring: Carpet, Tile, Wood, Hardwood, Linoleum
- Windows: Double Pane Windows
- Basement: Doghouse,Interior Entry,Finished,Full,Partial
- Number of fireplaces: 1
Interior area
- Total structure area: 3,596
- Total interior livable area: 3,596 sqft
- Finished area above ground: 2,854
- Finished area below ground: 742
Property
Parking
- Total spaces: 4
- Parking features: Paved, 5 - 10 Spaces, On Site, Off Street, Garage Door Opener, Heated Garage
- Attached garage spaces: 4
Features
- Patio & porch: Deck, Porch
- Exterior features: Animal Containment System
- Has private pool: Yes
- Has spa: Yes
- Has view: Yes
- View description: Trees/Woods
Lot
- Size: 1.25 Acres
- Features: Near Golf Course, Near Shopping, Near Town, Rural, Level, Open Lot, Right of Way, Landscaped
Details
- Additional structures: Outbuilding, Shed(s)
- Parcel number: UNNNM003L026003
- Zoning: Rural
- Other equipment: Generator, Internet Access Available
Construction
Type & style
- Home type: SingleFamily
- Architectural style: Contemporary
- Property subtype: Single Family Residence
Materials
- Other, Wood Frame, Clapboard, Wood Siding
- Foundation: Poured Concrete
- Roof: Pitched,Shingle
Condition
- Year built: 1991
Utilities & green energy
- Electric: Circuit Breakers, Generator Hookup
- Sewer: Private Sewer
- Water: Private
Community & neighborhood
Location
- Region: Union
Other
Other facts
- Road surface type: Gravel
Price history
| Date | Event | Price |
|---|---|---|
| 6/12/2026 | Sold | $668,000-4.6%$186/sqft |
Source:  Maine Listings #1652563 Report a problem | ||
| 6/12/2026 | Pending sale | $699,999$195/sqft |
Source: Maine Listings #1652563 Report a problem | ||
| 4/28/2026 | Contingent | $699,999$195/sqft |
Source: Maine Listings #1652563 Report a problem | ||
| 3/16/2026 | Price change | $699,999-9.7%$195/sqft |
Source: Maine Listings #1652563 Report a problem | ||
| 2/23/2026 | Listed for sale | $775,000+298.5%$216/sqft |
Source: Maine Listings #1652563 Report a problem | ||
| 10/3/2016 | Sold | $194,500-6.9%$54/sqft |
Source: Maine Listings #1243402 Report a problem | ||
| 2/19/2016 | Price change | $209,000-4.6%$58/sqft |
Source: Camden Real Estate Company #1243402 Report a problem | ||
| 7/9/2015 | Price change | $219,000-2.7%$61/sqft |
Source: Jaret & Cohn Real Estate #1157040 Report a problem | ||
| 11/23/2014 | Price change | $225,000-4.3%$63/sqft |
Source: Jaret & Cohn Real Estate Inc. #1157040 Report a problem | ||
| 10/11/2014 | Listed for sale | $235,000$65/sqft |
Source: Jaret & Cohn Real Estate Inc. #1157040 Report a problem | ||
Public tax history
| Year | Property taxes | Tax assessment |
|---|---|---|
| 2024 | $6,206 +11% | $360,800 |
| 2023 | $5,592 +21.3% | $360,800 +15.8% |
| 2022 | $4,610 +27.6% | $311,500 +56.1% |
| 2020 | $3,613 +2.6% | $199,600 +3.7% |
| 2019 | $3,521 +2.8% | $192,400 |
| 2018 | $3,425 +12.7% | $192,400 |
| 2017 | $3,040 +12.5% | $192,400 +20.3% |
| 2016 | $2,702 +4.3% | $159,900 |
| 2015 | $2,590 +1.9% | $159,900 |
| 2014 | $2,542 +5.5% | $159,900 +0.2% |
| 2013 | $2,410 +5.9% | $159,600 +1% |
| 2012 | $2,275 +2.8% | $158,000 |
| 2011 | $2,212 | $158,000 -11.5% |
| 2009 | -- | $178,600 |
| 2008 | -- | $178,600 |
Find assessor info on the county website
Neighborhood: 04862
Nearby schools
GreatSchools rating
- 5/10Union Elementary SchoolGrades: PK-6Distance: 1.8 mi
- 6/10Medomak Middle SchoolGrades: 7-8Distance: 7.8 mi
- 5/10Medomak Valley High SchoolGrades: 9-12Distance: 7.7 mi
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- Maine
- Knox County
- Union
- 04862
- 23 Bonnie Lane
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