22 Saint Johns Dr,
Mendham Twp. NJ

10 beds | 6.4 baths | 30 Acres | MLS/ID#: 3053630

Under Contract
Under Contract
22 SAINT JOHNS DR Mendham Twp., NJ 07945 - Turpin Realtors 22 SAINT JOHNS DR Mendham Twp., NJ 07945 - Turpin Realtors 22 SAINT JOHNS DR Mendham Twp., NJ 07945 - Turpin Realtors 22 SAINT JOHNS DR Mendham Twp., NJ 07945 - Turpin Realtors 22 SAINT JOHNS DR Mendham Twp., NJ 07945 - Turpin Realtors 22 SAINT JOHNS DR Mendham Twp., NJ 07945 - Turpin Realtors 22 SAINT JOHNS DR Mendham Twp., NJ 07945 - Turpin Realtors 22 SAINT JOHNS DR Mendham Twp., NJ 07945 - Turpin Realtors 22 SAINT JOHNS DR Mendham Twp., NJ 07945 - Turpin Realtors 22 SAINT JOHNS DR Mendham Twp., NJ 07945 - Turpin Realtors


The mansion and school complex consists of five buildings on approximately 32 acres. The property straddles Peapack/Gladstone in Somerset County and Mendham Township in Morris County. Approximately 12.8 acres are located in Peapack-Gladstone and the remainder in Mendham Township, Morris County. The land is generally gently rolling and offers long views of the Somerset Hills. The location is convenient to Routes 287 and 78 and train transportation is available at the Peapack and Gladstone train stations. Private schools, golf courses and equestrian facilities are nearby. The mansion, Hillandale, was built in 1906 and consists of approximately 18,000 square feet. The exterior is of stone and brick and has a tile roof. The Main Floor includes the Entry Foyer with stone fireplace, a Living Room, Formal Dining Room, Music Room, Office, Butler’s Pantry, Kitchen and two Powder Rooms. Additionally there is a chapel. The second floor contains 10 bedrooms and four bathrooms. The third floor has additional bedrooms and bathrooms. Hillandale was designed for Katherine Kunhardt Mosle and George Mosle by Grosvenor Atterbury. School Wings: Two wings extend from the front of the mansion and were constructed in the late 1930s. They are three stories high with basements. The second floor of the right wing has dormitory rooms and bathrooms and was renovated in the mid 2000s. Layout: The First Floor contains a large cafeteria with commercial-style kitchen and a walk-in refrigerator (disconnected), a walk-in freezer (disconnected), one dry-storage room, and dishwashing room. The spacious Dining Room has a kitchen attached. The third floor contains seven classrooms and an office. The basement includes an art room, auditorium, offices and storage. Fatima Hall is a two-story brick building constructed in 1950. The first floor has two meeting rooms, sitting room, dining room a commercial-style kitchen and powder rooms. The second floor has 29 bedrooms and multiple bathrooms. Garage and Apartments: Built in the 1930’s and contains a total of approximately 4000 square feet. There is a full bathroom in each of the two units and the exterior construction is primarily of brick and stone. Gymnasium: Steel-framed, metal panel warehouse-style building. Designed to be utilized as a gymnasium with full basketball court, wood floor and rollout grandstands. There are two powder rooms and an office. For permitted uses, please refer to Township of Mendham Ordinance No. 4 – 2008.

Bedrooms 10
Full Bathrooms 6
Half Bathrooms 4
Property Type Residential
Year Built 1906
Acreage 30
Style Tudor
Taxes $148,268 (2012)


Elementary Mendham
High W.M.Mendham
Middle Mendham
Number of Rooms 18
Basement Yes
Basement Desc. Partial
Community Living No
  • Cathedral Ceiling
  • High Ceilings
  • Beam Ceilings
  • Fire Alarm Sys


  • Dishwasher


  • Exercise Room


  • Foyer/Hall


  • Tile
  • Vinyl-Linoleum
  • Wood


  • Baseboard - Electric
  • Radiators - Steam

Fuel type

  • Oil Tank Above Ground


  • Private

Water heater

  • Electric


  • Private


  • Garbage Extra Charge

Room layout

Room Dimensions Floor
Master Bedroom N/A Second
Bedroom 2 N/A Second
Bedroom 3 N/A Second
Bedroom 4 N/A Second
Den Room 17x15 First
Dining Room 30x20 First
Kitchen 17x17 First
Living Room 35x22 First
  • Open Porch(es)
  • Outbuilding(s)
  • Carriage House


  • 2 Spaces
  • Detached Garage


  • Blacktop


  • Tile


  • Backs to Park Land
  • Open Lot
  • Wooded Lot
  • Private Road

Listing Agent

Photo of Gerry-Jo Cranmer




Community Video: The Mendhams

Mendham Township, NJ real estate market

About Mendham

Mendham Township is situated in the southern part of Morris County, several miles from the county seat of Morristown and about an hour’s drive from New York City.  Brookside and Ralston—once known by its Native American name of Roxiticus--are long-established hamlets in this picturesque township, where winding country roads, vast estate properties and notable historic sites impart a decidedly rural feel. Mendham Township and the smaller Mendham Borough are commonly referred to simply as Mendham.  The township was founded in 1749 and measures about 18 square miles. 


People have been drawn to the natural beauty of Mendham Township for centuries; it has also been a more-recent home to notable residents including New Jersey Governor Chris Christie, actor and star of the Game of Thrones television series Peter Dinklage, and the late singer Whitney Houston.

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