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Set well back from the street on a gently rolling hillside, 11 Glen Alpine Road is one of the great estates of the East Bay. Built in 1929 for inventor Ernest J. Sweetland and designed by architect Frederick H. Reimers, this English Tudor and French Gothic residence features exterior walls of Bath stone imported from England and a distinctive purple Pennsylvania slate roof. Carved oak entry doors open to a marble vestibule with a domed gold-leaf ceiling and an extraordinary oak-paneled great hall stretching approximately 60 feet, where a sweeping staircase rises beneath a two-story leaded-glass window. The main floor features a magnificent 42-by-23-foot living room with a 15-foot beamed ceiling and dramatic seven-foot fireplace, a Gothic-windowed conservatory, an oak-paneled library, a striking octagonal dining room, and a tiled kitchen with serving and pastry pantries, a home office, and a sun-filled hexagonal breakfast room. The bedroom level offers eight bedrooms, including a primary suite with two dressing rooms, two baths, a study, and two fireplaces, as well as the charming log cabin suite lined in Oregon pine. An expansive third floor provides versatile space for recreation, work, or additional living areas. The daylit lower level is highlighted by a grand ballroom with maple floors, a stage, and a commercial kitchen. Set on 1.79 acres, the private grounds encompass a swimming pool and spa, pool house, and tennis court, while a winding driveway leads to a five-car garage. Nearly a century after its construction, 11 Glen Alpine Road remains an extraordinary testament to the artistry, craftsmanship, and architectural ambition of its era.
Property Type(s):
Single Family
| Last Updated | 11/3/2026 | Tract | CENTRAL PIEDMONT |
|---|---|---|---|
| Year Built | 1929 | Garage Spaces | 5.0 |
| County | Alameda |
Additional Details
| AIR | None |
|---|---|
| APPLIANCES | Dryer, Washer |
| BARN/EQUESTRIAN | Yes |
| BASEMENT | Yes |
| CONSTRUCTION | Brick, Concrete, See Remarks |
| EXTERIOR | Garden |
| FIREPLACE | Yes |
| GARAGE | Attached Garage, Yes |
| HEAT | Radiant |
| INTERIOR | Eat-in Kitchen |
| LOT | 1.79 acre(s) |
| LOT DESCRIPTION | Back Yard, Front Yard, Garden, Secluded, Sloped Down, Sloped Up, Sprinklers In Front |
| LOT DIMENSIONS | 77972 |
| PARKING | Attached, Garage, Off Street |
| POOL DESCRIPTION | In Ground |
| STORIES | 3+ |
| STYLE | Tudor |
| SUBDIVISION | CENTRAL PIEDMONT |
| VIEW | Yes |
| VIEW DESCRIPTION | Trees/Woods |
Location
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Listed with The GRUBB Company
The information being provided by Conejo Simi Moorpark Association of REALTORS® (“CSMAR”) is for the visitor's personal, non-commercial use and may not be used for any purpose other than to identify prospective properties visitor may be interested in purchasing. Any information relating to a property referenced on this web site comes from the Internet Data Exchange (“IDX”) program of CSMAR. This web site may reference real estate listing(s) held by a brokerage firm other than the broker and/or agent who owns this web site. Any information relating to a property, regardless of source, including but not limited to square footages and lot sizes, is deemed reliable but not guaranteed and should be personally verified through personal inspection by and/or with the appropriate professionals. The data contained herein is copyrighted by CSMAR and is protected by all applicable copyright laws. Any dissemination of this information is in violation of copyright laws and is strictly prohibited.
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