Mountainside Boro Homes for Sale

Welcome to Mountainside Boro, a hidden gem nestled in the heart of Union County, New Jersey. This picturesque town is renowned for its serene suburban charm, lush greenery, and stunning views of the Watchung Mountains. With a population of just over 6,000 residents, Mountainside offers a tight-knit community atmosphere while still being conveniently located near the bustling urban centers of New York City and Newark.

Mountainside Boro is an ideal place for families, young professionals, and retirees alike. The town boasts excellent schools, beautiful parks, and a variety of recreational activities that cater to all ages. Whether you enjoy hiking the scenic trails of the nearby Watchung Reservation, picnicking at the local parks, or exploring the quaint shops and eateries in the area, Mountainside has something for everyone.

For those considering a move to this charming community, you'll be pleased to discover a range of homes for sale that cater to diverse tastes and budgets. From cozy single-family homes with sprawling yards to modern townhouses and luxurious estates, there's a perfect abode waiting for you in Mountainside. Each property reflects the town’s unique character, often featuring beautiful landscaping and easy access to local amenities.

Don’t miss your opportunity to become part of this vibrant community. Explore the current homes for sale in Mountainside Boro and find your dream home today! With its blend of natural beauty, community spirit, and convenient location, Mountainside is more than just a place to live—it's a place to thrive.

Newest Mountainside Boro Homes for Sale

$749,999

3 Beds ⋅ 1.1 Baths ⋅ 4050231 MLS

Welcome to 271 Summit Road, a 3 Bedroom, 1.5-Bath ranch set on a corner lot in Mountainside. The single-level layout offers easy, efficient living with Eat in Kitchen, Livingroom, Dining room, Enclosed Porch, Three Bedrooms and Bathroom. The unfinished basement with a 1/2 Bathroom is a blank canvas full of potential for a future rec room, home gym, office, or extra storage, giving the next owner room to make this home their own. Located in Mountainside, residents enjoy easy access to major highways and shopping

271 Summit Rd, Mountainside Boro

$3,600,000

4 Beds ⋅ 3.1 Baths ⋅ 4049756 MLS

Exceptional custom Tudor by architect Hildie Lazar and builder Tom Colicchio (Oct 2020 - Jan 2022) on 1.02 acres at the end of a quiet, private dead-end road. Nearly 4,500 sq ft on three levels:4 bedrooms, 3.5 baths. First floor (2,356 sq ft) designed for aging in place, no steps or level changes. Stone arched entry & open porch lead to a vaulted foyer/dining room & sun-filled living space. Gourmet kitchen w/ top-line appliances, Edgecomb gray cabinetry, & a large quartzite island. Living room w/ built-in bar (wine & beverage refrigerators), remote gas fireplace & built-in bookshelves. 280 sq ft English glass conservatory with remote blinds & backyard access. Mudroom/laundry w/ counters, sink, & custom storage; two-car garage w/underfloor heat & EV charging. First-floor primary suite: vaulted ceilings, patio access, second gas fireplace, spa bath with skylights, rain shower, soaking tub, and marble double vanity. Two walk-in closets connect by secret door to an office w/vaulted ceiling, third gas fireplace, & blue-gray cabinetry. Underfloor heat throughout. Second floor (1,077 sq ft): three bedrooms including a custom bunk room that sleeps 5, reading nook, and two full baths. Finished basement (1,033 sq ft): gym, billiard room, & climate-controlled wine cellar (200 bottles, glass lockable doors). Whole house gas generator. All-native woodland garden w/ 120+ species on winding paths. Wild lawn & remote gas fire pit off patio. 120 sq ft outbuilding could serve as a studio

151 Wild Hedge Ln, Mountainside Boro

$1,650,000

5 Beds ⋅ 3.1 Baths ⋅ 4049132 MLS

Exceptional custom-built 2015 Colonial in desirable Mountainside, NJ, set on a generous 0.4-acre lot with a finished walk-out lower level, flexible guest space, and a beautifully designed multi-level backyard. A two-story foyer welcomes you in, with custom wainscoting and thoughtful details throughout. The expansive chef's kitchen features an oversized granite island, custom cabinetry, pantry, and seamless flow into the family room with a gas fireplace. A formal dining room with coffered ceilings and a private living room, currently used as a home office, complete the first floor. The backyard offers distinct areas for dining, entertaining, relaxing, and play, including a Trex deck, patio, fully fenced yard, and expansive lawn. Upstairs, the luxurious primary suite features a spa-inspired bath and generous walk-in closet, alongside spacious secondary bedrooms & the convenience of second-floor laundry. High ceilings, quality craftsmanship, and abundant natural light create a warm, welcoming atmosphere throughout. The newly completed 1,000 sq/ft walk-out lower level offers incredible flexibility w/ a private entrance, 9-foot ceilings, rec room, custom wet bar, full bath, guest bedroom, perfect for guest quarters, a private suite, or added living flexibility. Ideally located near Deerfield School, parks, shopping, downtown Westfield, and with a convenient under-1-hour commute to NYC, this home offers the perfect balance of suburban tranquility and commuter convenience.

1233 Poplar Ave, Mountainside Boro

$999,000

5 Beds ⋅ 2.1 Baths ⋅ 4046556 MLS

Welcome to this spacious 5-bedroom, 2.5-bath home situated on an almost half acre in desirable Mountainside. Offering an abundance of living space, this residence features generously sized rooms, hardwood floors, two fireplaces, and a finished basement providing additional living and recreation space. The main level offers a comfortable layout with formal living and dining areas and a spacious family room. Outside, enjoy a private backyard with an in-ground pool and deck, ideal for summer entertaining and relaxing. Additional features include a two-car attached garage, circular driveway, central air, and ample storage. Conveniently located near shopping, dining, parks, major highways, and transportation. An excellent opportunity to update and personalize a spacious home in a sought-after Mountainside neighborhood.

472 Summit Rd, Mountainside Boro

$1,249,000

5 Beds ⋅ 4 Baths ⋅ 4044999 MLS

Completely reimagined in 2026, this Colonial commands attention on a corner lot with its crisp modern facade and stone accents that set the tone from the moment you arrive. The main level flows effortlessly from the formal living room through the dining room and into a chef's kitchen anchored by an oversized center island that opens directly to the family room for one expansive gathering space as suited to a quiet weeknight as it is to entertaining on a grand scale. A dinette, main-level bedroom, and full bathroom round out the first floor, offering flexibility for residents and guests alike. Upstairs, the primary suite serves as a tranquil retreat with an en suite bathroom, double vanity, and a WIC outfitted with a custom organizer, while three additional bedrooms share a common bathroom. A dedicated laundry room on this level adds everyday convenience. The finished lower level extends the footprint with a family room, playroom, and full bathroom ready to serve as a home theater, gym, or recreation space (these are merely ideas, the opportunity is endless). Head outside to a private fenced backyard with an in-ground pool and expansive paver patio, framed by mature landscaping. Just off Route 22 with local bus transportation a block away, this home delivers effortless access to everything you need.

209 Central Ave, Mountainside Boro

$979,000

4 Beds ⋅ 2.1 Baths ⋅ 4043673 MLS

Location & Space! 4BRM,2.5BA home located in a sought-after Mountainside quiet neighborhood/spread out upper Central Ave. Leveled big private yard where you can watch the town fireworks. Sunlight-filled rooms, open concept design for today's lifestyle, and gleaming hardwood floors throughout! Inside, you'll find an impressive Living room with a large picture window; the dining room opens to a stylish, updated kitchen w/quartz countertops, center island, abundant cabinetry, S/S appliances, pantry, and access to deck, patio, and a large private wooded backyard. Upstairs offers three BRM/2 baths, incl. a comfortable primary suite with an en-suite bath & WIC. Ground level features a home/office, a powder room, & a large Family room w/views of the deck, backyard, and Balcony. The lower level has an unfinished basement w/high ceilings, perfect for storage today and future potential tomorrow. Recent improvements include a lawn sprinkler system, a reflective natural sunlight device in the kitchen & second-floor hallway, and new HVAC in October 2024. Just minutes from top schools, house worship, shopping, restaurants, parks, major highways, Express bus to Midtown NYC & nearby NJ Transit stations to NYC. Close to Watchung Reservation's scenic trails & local horseback riding. Enjoy the great flow and layout of this home for everyday living and entertaining both indoors and outdoors with location and Nature!

340 Central Ave, Mountainside Boro

$1,275,000

4 Beds ⋅ 3 Baths ⋅ 4042369 MLS

Turn-key and beautifully updated, this expansive 4-bed, 3-bath home offers approx. 3,100SF of 1st and 2nd floor finished living space (plus additional finished basement area), on a level .36-acre property in the heart of Mountainside with expansive outdoor entertainment area & pool. The inviting layout is designed for daily living and high-end entertaining. The chef's kitchen features a Wolf range and paneled Sub-Zero refrigerator, flowing seamlessly into spacious living and dining rooms. A dramatic 26x24 great room enhanced by a vaulted ceiling and custom millwork, includes a refreshed dry bar, access to the outdoor living & adjacent oversized mudroom. A 1st-floor bedroom with an adjacent gut renovated (2021) full bath provides flexibility for guests or a home-office. Upstairs are 3 beds and 2 full baths, incl. a generous primary suite with Gas FP, walk-in-closet and en-suite bath. The finished basement adds recreation, storage and utility space. Outside, is true summer retreat: a fully fenced, level yard featuring an expansive deck, pergola, bar & a separately fenced 30,000-gallon heated concrete/gunite pool. Add'l highlights include a 2-car garage, 2-zone HVAC (2018), new water heater (2024), complete new roof and skylights (2026), updated windows and extensive custom trim. Ideally located near Deerfield School, a 2024 National Blue Ribbon School and hub for many community activities, with convenient access to Rt 22 NYC buses and nearby Summit & Westfield train stations.

356 Longview Dr, Mountainside Boro

$825,000

3 Beds ⋅ 2 Baths ⋅ 4042351 MLS

Welcome to this beautifully maintained 3-bedroom, 2-bath ranch home offering approximately 1,934 square feet of comfortable one-level living. The bright, inviting interior features generously sized rooms and a functional layout designed for easy everyday living and entertaining. The main level includes a spacious living room, formal dining room, well-appointed kitchen, comfortable bedrooms and flexible living spaces, all without the need to navigate multiple floors. Set on a level .30-acre property, the home also offers a sunroom, patio, expansive backyard, underground sprinklers, a two-car garage and ample driveway parking. The partially finished lower level includes a large laundry room, utility room, plenty of storage and offers potential for even more living space.. Mountainside is known for its strong sense of community with recreation, senior, youth and resident programs offered throughout the year. Deerfield School (grades 3-8) was recognized as a 2024 National Blue Ribbon School. Conveniently located near multiple NYC bus and rail commuting options, major highways, shopping, parks and the Watchung Reservation, this home combines comfort, convenience and an exceptional community setting.

217 Robin Hood Rd, Mountainside Boro

$1,650,000

4 Beds ⋅ 3.1 Baths ⋅ 4040303 MLS

Distinctive 2003 Colonial with striking brick curb appeal, beautifully framed by mature landscaping and set on a private, resort-like property. The main level features hardwood floors, a spacious office/den, an elegant formal dining room, powder room, expansive eat-in kitchen and a light-filled family room with fireplace, all with surround sound speakers and overlooking the backyard. Upstairs, four bedrooms and two full baths include an impressive primary suite with a second fireplace, generous bath, walk-in closets and a separate sitting room offering flexible space for a home office or quiet retreat. The finished walk-out lower level adds exceptional versatility with a recreation room, full summer kitchen, full bath and abundant storage. Outdoor living is a true highlight, with an in-ground pool (2025 pool pump and liner), patio, pergola, pizza oven and storage shed surrounded by lush, established plantings. Additional features include a two-car garage, partial home generator, and full-property sprinkler system. Located within a level walk of 2023 National Blue Ribbon-designated Deerfield School (grades 3-8) and convenient to NYC bus service, Route 22, I-78, shopping, dining and neighboring Summit, Westfield and Berkeley Heights. Enjoy the warmth of Mountainside's small-town community with exceptional access to surrounding towns and major commuting routes.

1003 Charles St, Mountainside Boro

$799,999

4 Beds ⋅ 2.1 Baths ⋅ 4038725 MLS

SET IN ONE OF MOUNTAINSIDE'S MOST DESIRABLE NEIGHBORHOODS, THIS SPACIOUS 4-BEDROOM, 2.5-BATH COLONIAL PRESENTS A WONDERFUL OPPORTUNITY TO RENOVATE THE EXISTING HOME OR BUILD YOUR DREAM HOME. The first floor offers a welcoming living room, formal dining room, eat-in kitchen, comfortable den, first-floor laundry room, and powder room. Upstairs features four generously sized bedrooms, including a primary suite with a private bath, plus an additional full bath. An unfinished basement provides abundant storage, while the attached two-car garage adds everyday convenience. Hardwood floors beneath the existing carpeting, offering an excellent opportunity to restore their original beauty. Ideally located near parks, shopping, dining, major highways, and NJ Transit bus and rail service for an easy commute, this home offers easy access to everything Mountainside has to offer, including nearby Watchung Reservation and Echo Lake Park. Enjoy highly rated schools and all the benefits of living in one of Union County's most sought-after communities. HOME IS BEING SOLD STRICTLY AS IS. SELLER WILL MAKE NO REPAIRS OR CREDITS. HOME INSPECTIONS ARE FOR INFORMATIONAL PURPOSES ONLY.

378 FOREST HILL WAY, Mountainside Boro

$749,900

3 Beds ⋅ 3 Baths ⋅ 4038162 MLS

Lovingly owned for over three decades, this well-maintained home is being offered for sale for the first time since the current owners raised their family here. Located in one of Mountainside's most desirable neighborhoods, it offers space, functionality, and lasting pride of ownership. The main level features 3 bedrooms and 2 full bathrooms, including a primary suite with a private bath, plus a comfortable living room, dining area, and kitchen. The finished basement adds valuable living space with a full bathroom and direct interior access to the oversized attached 2-car garage, ideal for recreation, guests, hobbies, or a home office. Enjoy outdoor living on the large rear deck overlooking a spacious backyard with fenced areas for pets, a protected garden section, and additional yard space beyond the existing fence. Additional features include central air conditioning, public water and sewer, propane heat, a large driveway with ample parking, and included washer and dryer. Vacant and ready for immediate occupancy, this home offers an exceptional opportunity to update and make it your own while benefiting from years of careful maintenance. Conveniently located near shopping, dining, major roadways, parks, and highly regarded Mountainside schools, this property combines everyday convenience with the charm and quality of one of Union County's most sought-after communities.

1542 Us Highway 22, Mountainside Boro

$635,000

3 Beds ⋅ 1 Baths ⋅ 4036703 MLS

For years, I've been more than four walls and a roof, I've been a gathering place where laughter echoed through the rooms, holidays were celebrated, and ordinary days became cherished memories. Come inside and let me show you around! My enclosed front porch, wrapped in windows and filled with natural sunlight, welcomes every season beautifully. Step into my inviting living room, where a gas fireplace creates a warm atmosphere. Just beyond, you'll find a dining room made for sharing meals and conversations, leading into my eat-in kitchen, where morning coffee, game nights, and everyday meals became the moments that mattered most. Off the dining room, a covered deck overlooks my backyard, where cardinals are frequent visitors & birdsong fills the air. Upstairs, I offer three comfortable bedrooms and a full bath, along with generous hallway closet space to keep life organized. Downstairs, my finished recreation room provides additional living space for movies, hobbies, or play, while the laundry room and utility workshop add practicality, flexibility, and convenience. My driveway accommodates 3-4 vehicles, and my location places you near major highways, commuting routes, Echo Lake Park, and the shops and restaurants of downtown Mountainside. Life here is about enjoying the simple pleasures, a morning walk through the park, neighbors who become friends, and the convenience of having everything you need nearby. I'm ready for my next chapter. Perhaps it begins with you. Welcome!

587 Woodland Ave, Mountainside Boro

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