Medium-capacity home · Offers a balance of services and community atmosphere.
Sage Mountain Senior Living
Sage Mountain Senior Living provides assisted living, memory care, and respite care in Newbury Park, California. Assisted living includes help with daily tasks such as dressing, bathing, and medication while a resident keeps a private living space. Memory care offers a secured setting with supervision for someone who may be at risk of wandering.
Respite care provides a short stay when a family’s usual caregiver needs to travel or recover. The range of care options may suit a resident whose needs could change, or a family seeking temporary support. There are 145 beds in the community.
Residents can choose among studios, one bedroom residences, and two bedroom residences. The two bedroom layout can work for a couple moving together or for someone who wants a companion.
Christian Castillo serves as administrator, while Sage Mountain Sr. Housing Partners and Agemark Mgmt operate the community. Pets are allowed, so residents can bring a pet to live with them.
Community insights.
About this community
Sage Mountain Senior Living is legally operated by Sage Mountain Sr. Housing Partners and Agemark Mgmt, and administered by Christian Castillo.
Inspection History
In California, the Department of Social Services (for assisted living facilities) and the Department of Public Health (for nursing homes) conduct inspections to ensure resident safety and regulatory compliance.
ALM Inspection Grade
21 points below the California average for state-licensed facilities (83/100)
Category breakdown
Serious citations
Concern
31 serious citations in 85 inspections
Moderate citations
Typical
0.29 moderate citations per inspection (25 in 85 inspections) · 2× more than the typical state-licensed CA facility (median: 0.14)
Complaint visits
Concern
37 complaint visits per 100 resident beds (53 in 145 beds) · 4× more than the typical state-licensed CA facility (median: 9.6)
Inspection Scorecard
This scorecard compares key inspection, citation, and complaint metrics at this facility against the California state average. Metrics rated ≥15% worse than average are highlighted in red; those ≥15% better are highlighted in green.
• Total citations (367% above)
• Serious citations (Type A) (933% above)
• Moderate citations (Type B) (525% above) 1 At Avg Metrics at California average:
• Citations per inspection (at CA avg) 0 Better No metrics in this bucket.
Citations
| This Facility | CA Average | vs. CA Avg |
|---|---|---|---|
|
Total citations
| 56 | 12.0 | This facility has 367% more total citations than a typical California assisted living residence (56 vs. CA avg 12).↑ 367% worse |
|
Serious citations (Type A)
| 31 | 3.0 | This facility has 933% more serious citations (type a) than a typical California assisted living residence (31 vs. CA avg 3).↑ 933% worse Rank #1332 / 1338 Serious citations (Type A) — State benchmarked This assisted living community is ranked 1332nd out of 1,338 assisted living communities we track in California for # of serious citations. Shows this facility's # of serious citations compared to the California average among the 1338 assisted living communities in the ranking pool. Communities with the same value for a metric share the same rank. Rankings compare like with like: every assisted living community we track in California that reports data for that category. Assisted living communities without available data are excluded, so the pool size varies from metric to metric. |
|
Moderate citations (Type B)
| 25 | 4.0 | This facility has 525% more moderate citations (type b) than a typical California assisted living residence (25 vs. CA avg 4).↑ 525% worse |
|
Citations per inspection
| 0.7 | 0.7 | This facility has citations per inspection in line with the California average (0.7 vs. CA avg 0.7).— At avg |
Inspections & Visits
| This Facility | CA Average | vs. CA Avg |
|---|---|---|---|
|
Total inspections
| 85 | 16.0 | This facility has had 431% more total inspections than the California average (85 vs. CA avg 16). More inspections can mean more regulatory scrutiny rather than worse care.↑ 431% more |
|
Complaint visits
| 53 | 13.0 | This facility has had 308% more complaint visits than the California average (53 vs. CA avg 13). More inspections can mean more regulatory scrutiny rather than worse care.↑ 308% more Rank #1258 / 1292 Complaint visits — State benchmarked This assisted living community is ranked 1258th out of 1,292 assisted living communities we track in California for # of complaint visits. Shows this facility's # of complaint visits compared to the California average among the 1292 assisted living communities in the ranking pool. Communities with the same value for a metric share the same rank. Rankings compare like with like: every assisted living community we track in California that reports data for that category. Assisted living communities without available data are excluded, so the pool size varies from metric to metric. |
|
Other visits
| 27 | 7.0 | This facility has had 286% more other visits than the California average (27 vs. CA avg 7). More inspections can mean more regulatory scrutiny rather than worse care.↑ 286% more |
|
Official inspections
| 5 | 4.0 | This facility has had 25% more official inspections than the California average (5 vs. CA avg 4). More inspections can mean more regulatory scrutiny rather than worse care.↑ 25% more |
|
Complaint investigations
| 32 | 10.0 | This facility has had 220% more complaint investigations than the California average (32 vs. CA avg 10). More inspections can mean more regulatory scrutiny rather than worse care.↑ 220% more |
What does this home offer?
Pets Allowed
Housing Options: Studio / 1 Bed / 2 Bed
Building Type: 3-story
Transportation Services
Fitness and Recreation
Type of Rooms Available
Sage Mountain Senior Living Virtual Tour

Places of interest near Sage Mountain Senior Living
2.9 miles from city center
Estimated distance in miles from Newbury Park's city center to Sage Mountain Senior Living's address, calculated via Google Maps.
— 4 miles to nearest hospital (Los Robles Regional Medical Center)
Calculate Travel Distance to Sage Mountain Senior Living
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Compare Assisted Living around Thousand Oaks
Info below is compiled from the CA Dept. of Social Services (CDSS), senior community websites & trusted data sources such as Walk Score & BBB.
Communities are listed from highest-ranked to lowest-ranked based on our methodology.
Care Types in This Table
AL (Assisted Living):
Housing with help for daily activities like bathing, dressing, and medication, without 24-hour skilled nursing.
MC (Memory Care):
Secured, specialized care for people living with Alzheimer's or dementia.
RC (Respite Care):
Short-term temporary care that gives family caregivers a break.
RESC (Residential Care):
Personal care and daily-living support in a smaller, more intimate residential setting.
IL (Independent Living):
Community living with dining, activities, and transportation for active seniors who need little personal care.
HOS (Hospice Care):
Comfort-focused care for those with a terminal illness, prioritizing quality of life over treatment.
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City and state of the facility. Used for mapping and state-average comparisons.
|
Licensed bed capacity (maximum allowed). Not the same as how many beds are currently filled.
|
Indicates whether residents are allowed to have pets in the facility.
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Third-party neighborhood walkability score (0–100). Convenience/context metric, not a healthcare quality measure.
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A 0–100 score of a facility's regulatory inspection record, shown as a letter and compared with other facilities of the same kind in the same state. This is a proprietary Assisted Living Magazine grade. It is not a government rating. A dash means we have no inspection data for that facility.
|
Count of regulatory inspections in the reporting window. Higher volume can reflect more oversight visits, complaint-driven surveys, or routine licensure cycles.
|
Visits or investigations linked to complaints, as counted in the state record (may differ from routine annual surveys).
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Count of California state "Type A" citations — the state's most serious citation category (immediate or serious harm to residents), from California state inspection data.
|
Number of years the company has been in operation.
|
Reported or derived occupancy for the facility—typically how fully licensed capacity is utilized. Compare across peers in the same market.
|
Better Business Bureau grade for the operating company. Reflects complaint handling and business practices, not clinical care quality.
|
Name of the licensed owner, operator, or managing entity as filed with the state. Useful for grouping facilities under the same organization.
|
Housing or bed configuration options (e.g. studio, shared), often from facility-reported amenities and licensing details.
| |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Atria Hillcrest | AL IL MC | Thousand Oaks (Greenwich Village) | 207
Facility
207
CA AVG
103
Rank
#125 / 1,350 | Yes |
72
Facility
72
CA AVG
56
Rank
#445 / 1,411 | B+ | 36 | 19
Facility
19
CA AVG
13
Rank
#1,032 / 1,292 | 2
Facility
2
CA AVG
3
Rank
#679 / 1,338 | 40
Facility
40
CA AVG
13
Rank
#22 / 1,299 |
67.1%
Facility
67.1%
CA AVG
74.1%
Rank
#780 / 1,202 | A+ | Wg Hillcrest Inn Sh LP And Atria Management Co LLC | Studio / 1 Bed / 2 Bed |
| Sage Mountain Senior Living | AL MC RC | Newbury Park | 145
Facility
145
CA AVG
103
Rank
#332 / 1,350 | Yes |
14
Facility
14
CA AVG
56
Rank
#1,287 / 1,411 | D- | 85 | 53
Facility
53
CA AVG
13
Rank
#1,258 / 1,292 | 31
Facility
31
CA AVG
3
Rank
#1,332 / 1,338 | 7
Facility
7
CA AVG
13
Rank
#701 / 1,299 |
70.3%
Facility
70.3%
CA AVG
74.1%
Rank
#712 / 1,202 | A+ | Sage Mountain Sr. Housing Partners And Agemark Mgmt | Studio / 1 Bed / 2 Bed |
| Hillcrest Royale | AL HOS RC | Thousand Oaks | 145
Facility
145
CA AVG
103
Rank
#332 / 1,350 | No |
79
Facility
79
CA AVG
56
Rank
#309 / 1,411 | C- | 11 | 3
Facility
3
CA AVG
13
Rank
#418 / 1,292 | 9
Facility
9
CA AVG
3
Rank
#1,184 / 1,338 | 24
Facility
24
CA AVG
13
Rank
#235 / 1,299 |
62.8%
Facility
62.8%
CA AVG
74.1%
Rank
#917 / 1,202 | A+ | The Retirement Home, Inc | Studio / Suite |
| Sunrise of Westlake Village | AL MC | Thousand Oaks | 124
Facility
124
CA AVG
103
Rank
#466 / 1,350 | Yes |
74
Facility
74
CA AVG
56
Rank
#397 / 1,411 | A | 8 | 3
Facility
3
CA AVG
13
Rank
#418 / 1,292 | 1
Facility
1
CA AVG
3
Rank
#451 / 1,338 | 21
Facility
21
CA AVG
13
Rank
#297 / 1,299 |
70.2%
Facility
70.2%
CA AVG
74.1%
Rank
#716 / 1,202 | A+ | Szr Westlake Village And Sunrise Senior Living Mgt | Studio / Suite / 1 Bed / 2 Bed |
| Norma J’s Home for the Elderly | AL RESC | Thousand Oaks | 6
Facility
6
CA AVG
103
Rank
#1,036 / 1,350 | No |
47
Facility
47
CA AVG
56
Rank
#927 / 1,411 | C+ | 8 | 2
Facility
2
CA AVG
13
Rank
#310 / 1,292 | 0
Facility
0
CA AVG
3
Rank
#1 / 1,338 | 18
Facility
18
CA AVG
13
Rank
#381 / 1,299 |
100.0%
Facility
100.0%
CA AVG
74.1%
Rank
#1 / 1,202 | A+ | Tiede Senior Care, Inc | Private / Shared Rooms |
Rank badges are statewide and care-type specific: each assisted living community is ranked against every other CA assisted living community we track that reports that metric, not just the 5 on this page. See how we rank facilities
Financial Assistance for
Assisted Living in California
Sage Mountain Senior Living is located in Newbury Park, California.
Here are the financial assistance programs available to residents in California.
More homes from the same operator
Frequently Asked Questions about Sage Mountain Senior Living
Who is the owner of Sage Mountain Senior Living?
Sage Mountain Senior Living is legally operated by Sage Mountain Sr. Housing Partners and Agemark Mgmt, and administered by Christian Castillo.
Is Sage Mountain Senior Living in a walkable area?
Sage Mountain Senior Living has a walk score of 14. Car-dependent. Most errands require a car, with limited nearby walkable options.
What is the occupancy rate at Sage Mountain Senior Living?
Sage Mountain Senior Living's occupancy is 70.3%.
How long has Sage Mountain Senior Living been in business?
Sage Mountain Senior Living has been operating for approximately 7 years, based on available licensing and registration records.
Are pets allowed at Sage Mountain Senior Living?
Yes, Sage Mountain Senior Living allows residents to bring their pets.
Who is the administrator of Sage Mountain Senior Living?
Christian Castillo is the administrator of Sage Mountain Senior Living.
How many beds does Sage Mountain Senior Living have?
Sage Mountain Senior Living has 145 beds.
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