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387 Park Slope, Mountainside, NJ 07092
- 3 Beds
- 3 Full
Living at 387 Park Slope
SPECTACULAR 3 Bedroom, 3 Bath Mid-century Modern Treasure in Mountainside! Feel like you are “away from it all” every day in this architectural gem nestled in a gorgeous natural setting next to the Watchung Reservation. Designed by renowned architect Kenneth Kassler. Located on a private lane (with only 7 houses) completely wrapped in nature. Mid-century modern hallmarks such as clean lines, built-ins, high ceilings, large open spaces and an abundant use of windows bringing the outdoors inside. 1 Acre with immense privacy and seasonal views of New York City. So many GORGEOUS well-preserved original details such as multiple Built In Desks (1 concealed), Original Railings, a prolific use of wood including Original Wood Plank Walls throughout, Built In Closets and Built In Open Shelving. To Die For open and airy Living Room with modern recessed fireplace and breathtaking views. Tasteful updated Kitchen, Gracious Dining Room, Magical Sunroom, and Spacious Family Room. Private and airy Primary Suite with fabulous Built In Closets and stylish bath. Side Deck and Rear Patio are a nature lover’s dream. Express Bus to NYC. Great shopping and restaurants in Westfield, Summit, and the Short Hills Mall. Minutes to theWatchung Reservation (natu
SPECTACULAR 3 Bedroom, 3 Bath Mid-century Modern Treasure in Mountainside! Feel like you are “away from it all” every day in this architectural gem nestled in a gorgeous natural setting next to the Watchung Reservation. Designed by renowned architect Kenneth Kassler. Located on a private lane (with only 7 houses) completely wrapped in nature. Mid-century modern hallmarks such as clean lines, built-ins, high ceilings, large open spaces and an abundant use of windows bringing the outdoors inside. 1 Acre with immense privacy and seasonal views of New York City. So many GORGEOUS well-preserved original details such as multiple Built In Desks (1 concealed), Original Railings, a prolific use of wood including Original Wood Plank Walls throughout, Built In Closets and Built In Open Shelving. To Die For open and airy Living Room with modern recessed fireplace and breathtaking views. Tasteful updated Kitchen, Gracious Dining Room, Magical Sunroom, and Spacious Family Room. Private and airy Primary Suite with fabulous Built In Closets and stylish bath. Side Deck and Rear Patio are a nature lover’s dream. Express Bus to NYC. Great shopping and restaurants in Westfield, Summit, and the Short Hills Mall. Minutes to theWatchung Reservation (nature museum, horseback riding, hiking) and Echo Lake Park (pedal boats, ice skating, fishing, dog park). LOW Mountainside taxes! A home like this does not come on the market every day. Be the next owner of this architectural masterpiece!
Room by Room Details of 387 Park Slope, Mountainside
Ground Level
- Entry Foyer featuring hardwood floors, staircase to Second Level, extra-deep Coat Closet, original natural planked walls, spotlight
- Dining Room featuring original quarter sawn floors with inlay set on slant, chandelier, painted paneled walls, door to Sun Porch
- Sun Porch with 3 exposures, featuring stone flooring, windows and sliding doors , natural shiplap ceiling, ceiling fan/light fixture, baseboard molding, slider to Deck
- Chef’s Kitchen featuring hardwood floors, modern custom cabinetry, laminate countertops, glass tile backsplash, shiplap accent wall, Whirlpool stainless refrigerator/freezer, Whirlpool stainless dishwasher, Whirlpool stainless electric oven/range, Broan stainless hood, glass shelf above stove, 2 semi-pendant light fixtures, double sink
- Breakfast Room/Study featuring original built in Desk Area and full wall of Cabinetry, laminate flooring, flush mount light fixture, oversized windows, original natural planked walls, door to back Patio. Also included, if desired, is a custom-built matching raised table for kitchen work or window-facing breakfast bar.
Second Level
- Living Room featuring wall of oversized windows overlooking nature, original quarter sawn hardwood floors with inlay, recessed fireplace currently with electric insert, and floor to ceiling original natural planked walls, Original Built In with open shelving, “hidden” built in Media Cabinet, Original Built In with concealed cabinetry that includes fold out Desk
- Primary Bedroom Suite featuring original hardwood floors, original natural plank walls throughout, original 9 ft. Custom Built In Closets with custom shelving and hanging storage, ceiling fan/light fixture, oversized windows including large picture window at front
- Ensuite Bathroom featuring NEW double vanity with marble countertop, tile wainscoting, wallpaper, tub/shower combination with tile surround, recessed lighting
Third Level
- Landing Area with 2 Closets (1 is Walk In Cedar), pendant light fixture
- Bedroom 2 featuring carpeting, original natural plank walls, Original Built In Desk and Built in Lower Cabinetry, Original Custom Built In Closets with custom shelving, pull out drawers and hanging storage, oversized windows across 2 exposures.
- Bedroom 3 featuring laminate hardwood floors, original natural plank walls, Original Built In Desk and Built in Lower Cabinetry, Original Custom Built In Closets with custom shelving, pull out drawers and hanging storage, oversized windows including large picture window, semi-flush mount light fixture
- Jack and Jill Bathroom featuring tile flooring, vanity with vessel sink and quartz countertop, stall shower with glass door, medicine cabinet, tile wainscoting, flush mount lighting, built in storage
Lower Level
- Staircase to Lower Level with built in open shelving/pantry storage
- Family Room featuring tile flooring, oversized windows, drop ceiling with recessed lighting, flush mount light fixture, textured wallpaper, baseboard molding, Double Door Closet, Double Door Utility Closet
- 2 Car Garage with electric doors
- Full Bath featuring tile flooring, wood vanity with granite countertop, medicine cabinet, all in 1 tub/shower combination, recessed lighting, flush mount light fixture
Half Basement (below Lower Level)
- Landing Area with storage, utilities, recessed lighting
- Laundry Area featuring Kenmore washer and dryer, utility sink, built in cabinet and laundry table, recessed lighting
- 2 Storage Rooms with floor to ceiling shelving, recessed lighting
- Third Storage Room (originally a dark room) with sink, built in cabinetry, recessed lighting
Front/Backyard
- 1 Acre
- Partially Fenced in front yard professionally landscaped with extensive grasses, blooming perennials and Japanese maples for constant blooms and color
- Bluestone front walkway and stairs
- REFINISHED (2021) Side Deck encased by nature, bridge with pathway to backyard
- Rear Stone Patio
- Storage Shed adjoining driveway
- Extra parking area at bottom of driveway
Additional Features
- Designed by renowned Princeton architect Kenneth Kassler and built in 1941
- Homeowner has original architect drawings
- Low Mountainside taxes
- Whole-house Generator
- High ceilings throughout
- Industrial air conditioning system, 2 zones
- NEW gas furnace
- French drains and sump pump (although never been necessary)
Home to 7,000 residents, Mountainside is a charming community that sits on the southern slope of the Watchung Reservation. Located approximately 25 miles west of New York City, the town is full of magnificent parks, well-regarded schools and an abundance of activities for all ages, it shouldn’t come as a surprise that this tranquil community is the perfect alternative to its larger neighbors of Westfield, Summit and Scotch Plains. Offering top amenities and strong community ties, you will see residents spend their days in the summertime gathering at the fabulous community pool and on snowy days on bunny hill in Echo Lake Park with their tubes and sleds in hand. With spectacular views of the Manhattan skyline and the Watchung Reservation, it is no wonder people are looking to Mountainside for their forever home.
LP: List Price at time of sale
DOM: Days On Market
Commuting Info
- 42 minutes to NYC

Home to 7,000 residents, Mountainside is a charming community that sits on the southern slope of the Watchung Reservation. Located approximately 25 miles west of New York City, the town is full of magnificent parks, well-regarded schools and an abundance of activities for all ages, it shouldn’t come as a surprise that this tranquil community is the perfect alternative to its larger neighbors of Westfield, Summit and Scotch Plains. Offering top amenities and strong community ties, you will see residents spend their days in the summertime gathering at the fabulous community pool and on snowy days on bunny hill in Echo Lake Park with their tubes and sleds in hand. With spectacular views of the Manhattan skyline and the Watchung Reservation, it is no wonder people are looking to Mountainside for their forever home.
Questions? Appointments
Call 973-936-9129or send us your message!
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