Abbey Montessori Children's Center - Preschool

138 N. San Pedro Road, San Rafael, CA 94903 · Marin County

Child care center (preschool)

Abbey Montessori Children's Center - Preschool is a licensed child care center in San Rafael, CA, licensed for up to 30 children and serving preschool-age children. It has held its California license since 2003. Since February 2021, state licensing staff have inspected it 3 times and investigated 1 complaint, which was not substantiated. The state issued 3 citations, none of them Type A. None of them came in the last 12 months. Measured by weighted citations per inspection, it is tied for #19 of 35 centers in San Rafael and has more citations per inspection than 60% of California licensed centers.

Inspection record

More citations than 60% of 10,948 California licensed centers, per inspection, weighted by severity. More citations than most

Tied for #19 of 35 centers in San Rafael

0 Type A citations

3 Type B citations

3 Inspections

0 of 1 Complaints substantiated

3 citations from 5 state visits since Feb 8, 2021 · none in the last 12 months · last inspected May 7, 2026

Every state visit

Citation issued No citation Top row: inspections · bottom row: complaint investigations and other visits

What inspectors cited most

Training & qualifications 1

Records & paperwork 1

Building & playground safety 1

Citations, newest first

Type B Mar 8, 2024 Inspection Training & qualifications

Mandated reporter training §1596.8662(b)(1)(1)

Based on interview and record review, the licensee did not comply with the section cited above, which poses/posed a potential health, safety or personal rights risk to children in care.

Plan of correction due Apr 8, 2024

Type B Apr 21, 2022 Case management visit (deficiencies) Records & paperwork

Reporting requirements §101212(c)

Based on observation, interviews and file review, LPA confirmed facility has installed dividing wall in the outdoor play area, without prior department notification. This poses a potential health or safety risk to children in care. 8 Proof of correction will be submitted to the department via email.

Plan of correction due Apr 29, 2022

Type B Apr 21, 2022 Case management visit (deficiencies) Building & playground safety

Outdoor activity space §101238.2(d)(2)

Based on observations, LPA confirmed canopy in outdoor play area not properly anchored. This poses a potential health and safety risk to children in care. 8 Proof of correction will be submitted to the department via email.

Plan of correction due Apr 25, 2022

Complaint investigations

Not substantiated Apr 21, 2022 Complaint investigation received Feb 17, 2022

The state did not substantiate this complaint, so its allegations are not shown.

How often are complaints about daycares in California substantiated? See the county-by-county report →

About this center

Licensed capacity 30 children

License type Child care center (preschool)

License status Licensed

Licensed since Mar 17, 2003

Licensee Ma.elizabeth C. Costelo

Administrator Elizabeth Costelo

Phone (415) 479-8865

State facility # 213004840

Parent reviews Google Maps reviews
Not checked by Daycare Record

Other licenses at this address

Abbey Montessori Children's Center - Infant
Infant center · Licensed More citations than most

Common questions

Does Abbey Montessori Children's Center - Preschool take infants?

Not under this license, which covers preschool-age children. An infant center is licensed separately at the same address (listed below).

Has Abbey Montessori Children's Center - Preschool had any serious violations?

No Type A citations since 2021. It has 3 Type B citations, listed above.

Have there been complaints about Abbey Montessori Children's Center - Preschool?

California investigated 1 complaint since 2021 and substantiated 0. Allegations are shown only for substantiated complaints.

How does Abbey Montessori Children's Center - Preschool compare with other daycares in San Rafael?

It is tied for #19 of 35 centers in San Rafael by weighted citations per inspection, and has more citations per inspection than 60% of California licensed centers with enough inspection history to compare.

When was Abbey Montessori Children's Center - Preschool last inspected?

May 7, 2026. No citations were issued during that visit.

How much does Abbey Montessori Children's Center - Preschool cost?

California does not publish individual centers’ prices, so ask Abbey Montessori Children's Center - Preschool for its current tuition. For comparison, the median full-time price at licensed centers in Marin County, which includes San Rafael, was $1,683 a month for preschoolers (about $2,120 today) in the state’s 2021 Regional Market Rate Survey.

Who runs Abbey Montessori Children's Center - Preschool?

The licensee is Ma.elizabeth C. Costelo, and the administrator listed with the state is Elizabeth Costelo.

Licensed centers nearby

Abbey Montessori Children's Center - Infant
138 N. San Pedro Road, San Rafael · under 0.1 mi away · 12 spots More citations than most JCC Preschool San Rafael
200 N. San Pedro Road, San Rafael · 0.3 mi away · 150 spots More citations than most Miss Nicky's Preschool & Toddler Center
159 Merrydale Road, San Rafael · 0.5 mi away · 42 spots About typical Acqua Montessori School
8 N San Pedro Rd, San Rafael · 0.5 mi away · 24 spots More citations than most C.a.m.(Cfs)-old Gallinas Children's Center (Sa)
251 North San Pedro Road, San Rafael · 0.5 mi away · 69 spots More citations than most C.a.m.(Cfs)-old Gallinas Children's Center (Ps)
251 North San Pedro Road, San Rafael · 0.5 mi away · 140 spots More citations than most

Citations are quoted from California Department of Social Services inspection and complaint reports. Type A citations are the state’s most serious category (an immediate risk to children’s health, safety or personal rights); Type B citations are a potential risk. A citation is a finding about one rule, not a judgment about a center overall. Complaint allegations appear here only when the state substantiated them.

To read the full state reports, search facility number 213004840 on the California Care Facility Search. Data refreshed Oct 3, 2026.

Comparing centers? See how to choose a daycare: 30 questions to ask and a printable checklist.