Maine is no stranger to grandeur, but some of its most breathtaking estates are hidden away from the public eye, nestled in the quiet corners of the coastline and deep within the state’s forested landscapes. These four secluded mansions are more than just lavish retreats—they are sanctuaries of history, craftsmanship, and timeless beauty. From private oceanfront enclaves with sweeping Atlantic views to sprawling estates tucked along serene riverbanks, each home tells a story of elegance, ambition, and the pursuit of solitude. Built for those who sought luxury away from the crowds, these properties blend New England charm with architectural sophistication, offering the perfect balance of seclusion and splendor. Whether perched high on a rocky bluff or surrounded by acres of pristine woodland, these Maine mansions stand as enduring testaments to the state’s rich heritage and natural allure.
1. Riverside Retreat
This $2,700,000 waterfront estate in Castine, Maine, sits on 22.4 acres with 1,300 feet of owned shore frontage along the Bagaduce River. Built in 2004, the 11,080 sq. ft. home features six bedrooms, seven full baths, a chef’s kitchen, formal living and dining rooms, an office, and a family room with a wood stove. Additional amenities include a guest barn with waterfront views, a boat building with a heated workshop, and ample outdoor space for recreation and gatherings.
Where is Castine?
Castine, ME, is a historic town in Hancock County, situated on a peninsula along Penobscot Bay, about 40 miles south of Bangor. Covering approximately 7.7 square miles, it is one of the oldest communities in Maine, with a rich colonial and maritime history. The town is home to Maine Maritime Academy, a prestigious institution that trains students for careers at sea. Castine’s picturesque harbor, well-preserved historic buildings, and landmarks like Fort George and Dyce Head Lighthouse make it a popular destination for history buffs and boating enthusiasts.
Living Room
A white sofa and two patterned armchairs are arranged around a glass coffee table. A fireplace with a white mantel serves as the focal point, with built-in shelving on one side. Large windows and a glass door allow natural light to brighten the hardwood floors and soft-colored walls.
Dining Room
Dark wood dining table is surrounded by six chairs with floral-patterned cushions. A crystal chandelier hangs from the ceiling, casting light onto the green and white walls. Glass-paneled French doors lead to a bright entryway with tiled flooring and a white front door.
Bedroom
White wooden bed with a yellow-patterned quilt is set against a soft yellow wall. Two white armchairs and a side table are positioned near the floor-to-ceiling windows overlooking the lawn. A ceiling fan and light curtains add to the airy feel of the space.
Bathroom
Large glass shower with beige tiles stands in the corner of the bathroom. A white vanity with a built-in seating area and storage runs along the wall beneath large windows. Decorative plants, framed artwork, and a round wall clock add detail to the bright and neutral-toned space.
Source: Coldwell Banker
2. Cape-Style Waterfront Home
This $2,250,000 Cape-style waterfront home, built in 1982 and fully renovated in 2020 with additional updates in 2022, offers 4 bedrooms, 4 baths, and 3,268 sq. ft. of living space on a 4.54-acre lot with 400 feet of shorefront. The home features an open great room with a vaulted ceiling, propane fireplace, and sliding glass doors leading to a spacious deck, as well as a main-floor primary suite and a walk-out lower level with flexible living space. Additional amenities include a two-car attached garage with direct kitchen entry, unfinished storage space, wooded surroundings, perennial gardens, and a private path to the shorefront with ocean access.
Where is Camden?
Camden, ME, is a picturesque coastal town in Knox County, located on Penobscot Bay along Maine’s Midcoast, about 80 miles northeast of Portland. Covering approximately 26 square miles, it is known for its charming harbor, historic downtown, and scenic mountain views. The town is home to Camden Hills State Park, where visitors can hike to the summit of Mount Battie for panoramic views of the bay and surrounding islands. With a vibrant mix of boutique shops, seafood restaurants, and sailing opportunities, Camden is a popular destination for both outdoor enthusiasts and those seeking classic New England charm.
Living Room
Open-concept living room with a vaulted ceiling and a wooden beam accent. A stone fireplace with a wooden mantel serves as the focal point. Large glass doors lead to a deck with a lake view.
Dining Area
Combined dining and living space with an open floor plan. A wooden dining table with red upholstered chairs sits near floor-to-ceiling windows overlooking the lake. Natural light fills the room through glass doors leading to the outdoor deck.
Bedroom
Spacious bedroom with a wooden bed frame and floral bedding. French doors open onto a deck with views of the lake and trees. Two windows on the side bring in additional natural light.
Bathroom
Bathroom with a white subway tile walk-in shower and a dual sink vanity. Two round mirrors with overhead sconces provide lighting. Light gray cabinets contrast with the white marble countertop.
Source: Coldwell Banker
3. Oceanfront Estate Overlooking Penobscot Bay
This $3,200,000 oceanfront estate, built in 1952 and expanded in the 1990s, sits on 9.55 acres with 620 feet of accessible shorefront, including a sandy beach overlooking Penobscot Bay. The 5,707 sq. ft. home features 5 bedrooms, 4 full baths, a first-floor primary suite with an ocean-view soaking tub and private balcony, multiple living and entertaining areas, a sun-filled office, and a lower-level entertainment room. Additional amenities include a gated private driveway, an attached heated two-car garage, a detached equipment garage, a stone patio with a fire pit, a private pond, walking paths, a gazebo, and fully furnished interiors with Ethan Allen furniture and outdoor equipment for immediate occupancy.
Where is Belfast?
Belfast, ME, is a historic coastal city in Waldo County, located on Penobscot Bay in mid-coast Maine, about 100 miles northeast of Portland. Covering approximately 38 square miles, it is known for its working waterfront, vibrant arts scene, and well-preserved 19th-century architecture. The city features a charming downtown with local boutiques, galleries, and seafood restaurants, as well as the scenic Belfast Harbor Walk, which connects to the city’s marina and waterfront parks. With a blend of maritime heritage, cultural attractions, and outdoor recreation, Belfast offers a quintessential small-town New England experience.
Living Room
Large windows provide an expansive view of the lake and surrounding trees. Neutral-colored furniture and traditional decor create a comfortable seating area. Hardwood floors and a patterned rug add warmth to the space.
Dining Room
A round wooden dining table with woven chairs is positioned in front of floor-to-ceiling windows overlooking the lake. A chandelier hangs above, complementing the classic interior design. Beige walls with white wainscoting enhance the elegant atmosphere.
Bedroom
Wooden bed with patterned bedding sits against a wall adorned with framed nautical-themed artwork. Large windows allow natural light to highlight the hardwood flooring and area rug. A seating area with two armchairs is placed near the window for relaxation.
Patio
Paved patio with white wicker furniture overlooks a landscaped garden filled with pink flowers. A flagpole stands in the yard, surrounded by a circular brick design. The background features a lake with rolling hills and lush greenery.
Source: Coldwell Banker
4. Oceanfront Estate Above Frenchman Bay
This $7,400,000 estate, originally built in 1995 and fully remodeled in 2006, sits high on a bluff over 100 feet above Frenchman Bay, offering unobstructed ocean views. The 6,216 sq. ft. residence includes 7 bedrooms and 6 baths, featuring a 4-bedroom main house with a John Libby timber frame, a three-story cathedral living area with a granite fireplace, and a master suite with a gym and soaking tub. Additional amenities include a two-bedroom carriage house with a bunk room and play loft, a 130-foot granite and bluestone terrace with an outdoor kitchen and fireplace, and direct access to Acadia National Park trails, all within walking distance of downtown Bar Harbor.
Where is Bar Harbor?
Bar Harbor, ME, is a scenic coastal town in Hancock County, located on Mount Desert Island along Frenchman Bay, about 50 miles southeast of Bangor. Covering approximately 63 square miles, it is best known as the gateway to Acadia National Park, which offers hiking, biking, and stunning ocean views. The town features a lively downtown with local shops, seafood restaurants, and historic inns, making it a popular destination for visitors. Bar Harbor’s waterfront provides access to whale-watching tours, sailing excursions, and breathtaking sunrises from Cadillac Mountain, the highest point on the U.S. East Coast.
Living Room
A spacious living room features high vaulted ceilings with exposed wooden beams and large windows overlooking the ocean. A stone fireplace serves as the focal point, with floral-patterned furniture arranged around it. A lofted second-floor railing is visible above the open-concept kitchen and dining area.
Kitchen
An open kitchen includes a large central island with granite countertops, white cabinetry, and modern appliances. Large windows surround the dining nook and living area, offering panoramic ocean views. Hanging pendant lights add warm illumination to the space.
Bedroom
Large bedroom has light blue walls, hardwood flooring, and a white wooden bed frame with colorful bedding. A fireplace with a marble surround sits in the corner, complemented by a matching dresser and mirror. A wooden storage chest is placed at the foot of the bed.
Aerial View
An aerial view showcases the estate along the coastline, with deep blue waters extending to the horizon. A boat is seen leaving a wake in the water, while the property is nestled among dense trees. The main home and carriage house are visible along with a terraced outdoor living space.
Source: Coldwell Banker
