1097 S Los Robles Ave Pasadena, CA 91106
Madison Heights NeighborhoodEstimated payment $11,037/month
Highlights
- Hot Property
- Midcentury Modern Architecture
- Circular Fireplace
- Detached Guest House
- No HOA
- 5-minute walk to Allendale Park
About This Home
The Wallace Neff Shell House, carefully restored by its current owners with a commitment to preserving the integrity of Neff's original architectural intent, the residence remains a remarkably intact artifact of mid-century innovation.Set on an approximately 9,000-square-foot corner lot, the two-bedroom dome dwelling unfolds as a study in organic geometry and spatial efficiency. Beneath the curved shell, a circular half living room radiates from a central fireplace, flowing seamlessly into the kitchen and adjoining bath. The home's monolithic form blurs distinctions between structure and sculpture, embodying Neff's belief that architecture could be economical, resilient, and profoundly modern.In addition, the property includes an over 1,000-square-foot detached studio space, with submitted ADU plans in process with the city. This structure currently incorporates a large open public space, bath and separate bedroom. Further underscoring the property's historic significance is a rare Airform-constructed bomb shelter, added in the 60s, approximately 15 feet below the studio. Two patio outdoor seating areas, one nestled between the dome and detached studio space, the other positioned just outside the dome, are thoughtfully integrated within the surrounding gardens and gated drive.Originally conceived in 1947, The Shell House stands today as the sole surviving example in the United States of Neff's visionary Airform construction system. Also referred to as 'Bubble House,' a reinforced concrete construction, erected with an inflatable balloon and then sprayed with gunite, this experimental post-war housing concept fuses futurist engineering with sculptural domestic design. The Shell House represents a singular chapter in American architectural history, an extraordinarily rare convergence of preservation, experimentation, and design vision. A potential Mills Act candidate, if desired.
Listing Agent
COMPASS Brokerage Phone: (626) 807-8558 License #01394929 Listed on: 05/19/2026
Home Details
Home Type
- Single Family
Year Built
- Built in 1947 | Remodeled
Lot Details
- 8,984 Sq Ft Lot
- Fenced
- Sprinkler System
Parking
- 2 Open Parking Spaces
- 2 Car Garage
- Parking Available
- Tandem Uncovered Parking
Home Design
- Midcentury Modern Architecture
- Concrete Roof
- Pre-Cast Concrete Construction
- Stucco
Interior Spaces
- 1,204 Sq Ft Home
- Circular Fireplace
- Concrete Flooring
- Home Security System
- Laundry in unit
Kitchen
- Gas Oven
- Dishwasher
Bedrooms and Bathrooms
- 2 Bedrooms
- 1 Bathroom
Utilities
- Central Heating and Cooling System
- Standard Electricity
Additional Features
- Patio
- Detached Guest House
- Suburban Location
Community Details
- No Home Owners Association
Listing and Financial Details
- Tax Lot 8
- Assessor Parcel Number 5324005008
Map
Home Values in the Area
Average Home Value in this Area
Tax History
| Year | Tax Paid | Tax Assessment Tax Assessment Total Assessment is a certain percentage of the fair market value that is determined by local assessors to be the total taxable value of land and additions on the property. | Land | Improvement |
|---|---|---|---|---|
| 2025 | $5,556 | $447,360 | $335,308 | $112,052 |
| 2024 | $5,219 | $438,589 | $328,734 | $109,855 |
| 2023 | $5,172 | $429,990 | $322,289 | $107,701 |
| 2022 | $4,995 | $421,560 | $315,970 | $105,590 |
| 2021 | $4,793 | $413,295 | $309,775 | $103,520 |
| 2019 | $4,617 | $401,038 | $300,588 | $100,450 |
| 2018 | $4,651 | $393,176 | $294,695 | $98,481 |
| 2016 | $4,490 | $377,909 | $283,252 | $94,657 |
| 2015 | $4,439 | $372,234 | $278,998 | $93,236 |
| 2014 | $4,354 | $364,943 | $273,533 | $91,410 |
Property History
| Date | Event | Price | List to Sale | Price per Sq Ft | Prior Sale |
|---|---|---|---|---|---|
| 05/19/2026 05/19/26 | For Sale | $1,950,000 | +16.4% | $1,620 / Sq Ft | |
| 06/20/2025 06/20/25 | Sold | $1,675,000 | -9.5% | $1,241 / Sq Ft | View Prior Sale |
| 05/06/2025 05/06/25 | Pending | -- | -- | -- | |
| 03/25/2025 03/25/25 | For Sale | $1,850,000 | -- | $1,370 / Sq Ft |
Purchase History
We collect this data history from publicly available records. To have your information removed, we recommend requesting removal directly through your county’s website.
| Date | Type | Sale Price | Title Company |
|---|---|---|---|
| Grant Deed | $1,675,000 | Lawyers Title | |
| Interfamily Deed Transfer | -- | None Available | |
| Grant Deed | $262,500 | Southland Title |
Mortgage History
We collect this data history from publicly available records. To have your information removed, we recommend requesting removal directly through your county’s website.
| Date | Status | Loan Amount | Loan Type |
|---|---|---|---|
| Open | $750,000 | New Conventional |
Source: Pasadena-Foothills Association of REALTORS®
MLS Number: P1-27221
APN: 5324-005-008
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