321 Hillside Ave, Allendale, NJ 07401
OFF MARKET

321 Hillside Ave
Allendale, NJ 07401

  • 5 Beds
  • 3 Baths
  • 3,785 sqft (on 1,082 acres)

$1,832,800

Trulia Estimate
as of Jun 27, 2026
Est. Refi. Payment $11,751/mo*
Refinance Your Home

$1,832,800

Trulia Estimate
as of Jun 27, 2026
Est. Refi. Payment $11,751/mo*
Refinance Your Home
5 Beds
3 Baths
3,785 sqft
(on 1,082 acres)

Local Information

  • Map ViewExplore the area around 321 Hillside Ave.
  • Schools1 Preschool School2 Elementary Schools1 Middle School1 High School
  • Shop & Eat
-- mins to
Commute Destination

Description

Stunning 5/6 bedroom home designed for entertaining in 2001 by renowned architect Peter Cooper. Elegant appointments throughout include tray ceilings, extensive wainscoting, French doors, and moldings. The magnificent professionally landscaped acre+, resort-like property is showcased by an in-ground pool, custom waterfall, sound system, and nightscape lighting. The state-of-the-art kitchen features cherry cabinets, granite counters, and stainless steel appliances, while the great room has a fireplace and leads through French doors to the backyard oasis. Flexible floor plan plus a 3-car garage round out this custom home built over existing foundation. Walking distance to all award-winning Allendale schools.
This property is off market, which means it's not currently listed for sale or rent on Trulia. This may be different from what's available on other websites or public sources.

Home Highlights

Parking
No Info
Outdoor
No Info
HOA
None
Price/Sqft
No Info
Listed
Less than a day ago

Home Details for 321 Hillside Ave

Interior Features

Levels, Entrance, & Accessibility
Stories: 1

Property Information

Year Built
Year Built: 1960
Property Type / Style
Property Type: Single Family Home

Exterior Features

Parking & Garage
Parking Spaces: 2

Community

Units in Building: 1

Lot Information

Lot Area: 1082.00 acres

Price History for 321 Hillside Ave

DatePriceEventSource
12/17/2008$1,030,000Sold
N/A
09/13/2008$1,129,000Listed For SaleAgent Provided

Market trends in Allendale

Last updated May 2026
Buyer'sMarketSeller'sMarket
Avg. sale price
—
Sale-to-List Price
—
Price per sq ft
—
Available listings
11
3MoM
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Property Tax and Assessment

Year2025
Tax$25,538
Assessment$1,210,900
Home facts updated by county records

Comparable Sales for 321 Hillside Ave

Address
Distance
Property Type
Sold Price
Sold Date
Bed
Bath
Sqft
28 Linda Dr, Allendale, NJ
0.14
Single-Family Home
$1,775,000
04/27/26
4
3.5
3,323
67 Appert Ter, Mahwah, NJ
0.35
Single-Family Home
$830,000
08/28/25
5
4
4,000
19 Hickory Pl, Ramsey, NJ
0.74
Single-Family Home
$999,999
04/30/26
5
2.5
2,923
20 Dogwood Dr, Allendale, NJ
0.14
Single-Family Home
$900,000
09/24/25
4
2.5
2,352
109 Pine St, Ramsey, NJ
0.78
Single-Family Home
$1,029,520
08/27/25
5
2
2,009
26 Murray Ave, Mahwah, NJ
0.41
Single-Family Home
$1,150,000
11/20/25
4
4
-
8 Larch Ave, Ramsey, NJ
0.70
Single-Family Home
$750,000
07/02/25
4
2
1,480
28 De Gray Ter, Mahwah, NJ
0.98
Single-Family Home
$465,875
03/30/26
5
3
3,090
12 Franklin St, Mahwah, NJ
1.08
Single-Family Home
$870,000
10/15/25
4
3
2,327
10 Delwood Ct, Ramsey, NJ
0.67
Single-Family Home
$177,091
02/06/26
4
3
1,727

Nearby homes

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Assigned Schools

These are the assigned schools for 321 Hillside Ave.
View nearby schools on GreatSchools
The GreatSchools Rating compares schools on a variety of school quality indicators including test scores, college readiness, equity and more. Learn more.

What Locals Say about Allendale

At least 26 Trulia users voted on each feature.

  • 97 % Say it's dog friendly

  • 89 % Say it's quiet

  • 89 % Say parking is easy

  • 86 % Say people would walk alone at night

  • 84 % Say there's wildlife

  • 81 % Say car is needed

  • 81 % Say there's holiday spirit

  • 81 % Say yards are well-kept

  • 80 % Say they plan to stay for at least 5 years

  • 77 % Say it's walkable to restaurants

  • 74 % Say kids play outside

  • 71 % Say it's walkable to grocery stores

  • 71 % Say there are sidewalks

  • 59 % Say neighbors are friendly

  • 56 % Say streets are well-lit

  • 46 % Say there are community events

Sourced by Trulia users. Learn more about our methodology.
  • Julie Kenny
    "Anything hosted by the Holiday Observers, PTO or AFEE around town as well as Crestwood Park. Community and businesses come together often to support one another. "
    0
    Flag
  • P G.
    "Wonderful little community to raise a family! We have great schools, lots of activities and our own lake! People stay for decades once they move here!"
    1
    Flag
  • Kevin.quinn
    "Wonderful community with homeowners who are involved in numerous community organizations. Excellent schools."
    2
    Flag
  • Kevin.quinn
    "Local organization named Holiday Observers than provides town wide celebrations of Our national holidays. Best July 4th celebration on the planet!"
    0
    Flag
  • Julie K.
    "I grew up in town and moved back with my husband in my late twenties. It’s the sense of community, great schools and other features/activities (celery farm, crestwood lake,town restaurants and shopping) that drew me back. I am excited to raise my family in Allendale. "
    6
    Flag
  • Jessicacremo
    "Lived here for 4 years and love the sense of community. Neighbors are friendly, restaurants in town are great, sense of pride for the town, safe."
    2
    Flag
  • Barbara K.
    "So much within walking distance. People are very friendly. It also has a great school system. Many families stay generation after generation"
    0
    Flag
  • nancykgreene
    "Allendale retains a charming walkable "small town" feel with lovely turn of the century houses as well as NYC commuter trains and buses. Vintage downtown area is convenient to Routes 287 & 17. High-ranked schools, beautiful nature preserve and lakes. "
    0
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  • Liz
    "Allendale is a great town to raise children. The town has two grammar schools, Hillside, grades K-3, and Brookside, grades 4-8. The schools are top rated in NJ. The town also boasts a lake which opens from Memorial day through Labor Day. There are many fun activities for children including a great rec program which runs from the fall to the spring. The town is punctuated with many little shops, and restaurants, including an ice-cream store. We are also within walking distance to NJ Transit Trains, and Buses. This town truly has that small town feel. "
    1
    Flag
  • Melissa P. E.
    "Gorgeous builder's acre in San Jacinto, Allendale excellent schools, neighborhood. Train stop in town."
    0
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Apartments for Rent

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Homes for sale near 321 Hillside Ave

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Off Market Homes Near 321 Hillside Ave

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321 Hillside Ave, Allendale, NJ 07401 is a 5 bedroom, 3 bathroom, 3,785 sqft single-family home built in 1960. This property is not currently available for sale. 321 Hillside Ave was last sold on Dec 17, 2008 for $1,030,000. The current Trulia Estimate for 321 Hillside Ave is $1,832,800.