This is a collection of three residential condos APNs 120-73-001, 120-73-002, and 120-73-003 connected by a private common area and sold together as a compound.
Perched above the city with sweeping views from downtown Palo Alto to the Santa Cruz Mountains, this architectural triumph known as "The Castle in the Sky" is a true one-of-one. Designed in 2012 by Bellomo Architects as the architect's personal residence, this slag-based concrete compound offers unmatched rarity, security, and exclusivity.
Set atop a two-story commercial building and the only residential use in the area, this private enclave offers 17,000 sf of exclusive use space featuring three impeccably designed condos. Each offers 2 bedrooms, 2.5 baths, private balconies, and expansive 1,000 sq ft rooftop gardens with 3 feet of soil for true outdoor living. Fleetwood floor-to-ceiling windows, radiant hydronic heating/cooling, and floating staircases create a seamless, sophisticated design.
Multiple layers of controlled access and an 8-vehicle subterranean garage with car elevator ensure protection and discretion. Tucked in the heart of Palo Alto, this hidden fortress above the city provides total seclusion with immediate proximity to the world's most influential tech and business hub.
For sale
$24,950,000
102 University Ave #3A-3B-3C, Palo Alto, CA 94301
6beds
7,471sqft
Est.:
Condominium,
Built in 2011
-- sqft lot
$-- Zestimate®
$3,340/sqft
$6,000/mo HOA
What's special
Floating staircasesPrivate balconiesImpeccably designed condosSweeping viewsFloor-to-ceiling windows
- 66 days
- on Zillow |
- 1,532 |
- 26 |
Zillow last checked: 7 hours ago
Listing updated: July 16, 2025 at 07:11am
Listed by:
Samir Arsan 00932410 650-322-3143,
Arsan Realty
Source: MLSListings Inc,MLS#: ML82009163

Tour with a buyer's agent
Tour with a buyer's agent
Facts & features
Interior
Bedrooms & bathrooms
- Bedrooms: 6
- Bathrooms: 9
- Full bathrooms: 7
- 1/2 bathrooms: 2
Rooms
- Room types: Basement, Bonus Room, Great Room, Office, Utility Room, Workshop
Bedroom
- Features: PrimarySuiteRetreat2plus, WalkinCloset, PrimaryBedroom2plus
Bathroom
- Features: DoubleSinks, DualFlushToilet, Granite, ShowerandTub, ShowersoverTubs2plus, StallShower, StallShower2plus, Tubs2plus, HalfonGroundFloor, OversizedTub
Dining room
- Features: BreakfastNook, DiningArea, FormalDiningRoom
Family room
- Features: SeparateFamilyRoom
Kitchen
- Features: Countertop_Synthetic, DualFuel, ExhaustFan, IslandwithSink, Pantry
Heating
- Radiant Floor
Cooling
- Other
Appliances
- Included: Gas Cooktop, Dishwasher, Exhaust Fan, Freezer, Disposal, Range Hood, Ice Maker, Electric Oven, Built In Gas Oven/Range, Gas Oven/Range, Refrigerator, Washer/Dryer
- Laundry: Tub/Sink, Upper Floor, Inside
Features
- High Ceilings, One Or More Skylights, Walk-In Closet(s), Security Gate
- Flooring: Concrete
- Basement: Finished
Interior area
- Total structure area: 7,471
- Total interior livable area: 7,471 sqft
Property
Parking
- Total spaces: 7
- Parking features: Attached, Garage Door Opener, Guest, Lighted
- Attached garage spaces: 7
Accessibility
- Accessibility features: Elevator/Lift
Features
- Stories: 3
- Patio & porch: Balcony/Patio, Deck
- Exterior features: Fenced, Courtyard, Fire Pit, Drought Tolerant Plants
- Has view: Yes
- View description: City Lights, Hills, Mountain(s), Other
Lot
- Size: 8,090 Square Feet
- Features: Other
Details
- Parcel number: 12073001
- Zoning: CDCGF
- Special conditions: Standard
Construction
Type & style
- Home type: Condo
- Architectural style: Modern/HighTech
- Property subtype: Condominium,
Materials
- Concrete, Other
- Foundation: Slab, Concrete Perimeter and Slab, Piling, Quake Bracing, Reinforced Concrete
- Roof: Concrete, Other, Bitumen
Condition
- New construction: No
- Year built: 2011
Utilities & green energy
- Sewer: Public Sewer
- Utilities for property: Water Connected, Solar
Community & HOA
HOA
- Has HOA: Yes
- Services included: Electricity
- HOA fee: $6,000 monthly
Location
- Region: Palo Alto
Financial & listing details
- Price per square foot: $3,340/sqft
- Date on market: 5/30/2025
- Listing agreement: ExclusiveRightToSell
- Listing terms: CashorConventionalLoan
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