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Child care center 

Three Tree Montessori

220 Sw 160 St, Burien, WA 98166
licensed capacity
234
open each week
5 days
yearly, posted tuition
$1,300
year first licensed
2003

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Licensed by the state

About

About Three Tree Montessori

Three Tree Montessori is a licensed child care center in Burien, Washington. The state has licensed it since February 13, 2003, for up to 234 children, serving toddlers, preschoolers and school-age children.

It is open Monday to Friday, 7:30 AM to 5:30 PM. It describes a Montessori approach, with after-school care, before-school care, drop-in care and preschool. It lists yearly tuition from $1,300 to $20,507.

Washington State Department of Children, Youth, and Families publishes its inspection reports on its own website; the link is in the inspections section below.

MontessoriBefore- and after-schoolSummer campPosts tuition

Ages served: toddlers, preschoolers and school-age children

From the state license. Ages it lists: 15 months to twelve years old
Ask when you call: current openings, staff-to-child ratio, teacher qualifications and whether it accepts child care subsidies.
Type
Child care center
Ages
Toddlers, preschoolers and school-age children
Hours today
Closed today
Licensed capacity
234 children

Hours

Hours

Monday7:30 AM to 5:30 PM
Tuesday7:30 AM to 5:30 PM
Wednesday7:30 AM to 5:30 PM
Thursday7:30 AM to 5:30 PM
Friday7:30 AM to 5:30 PM
SaturdayNot listed
SundayTodayNot listed

Programs

Programs and care

AgesToddlers, preschoolers and school-age childrenFrom the state license. It lists: 15 months to twelve years old
ProgramsAfter-school care, before-school care, drop-in care, preschool, summer camp and toddler care
ApproachMontessori
Discounts10% sibling discount on lowest tuition rate(s)
AccreditationOther accreditation (Association Montessori Internationale)
Licensed capacity234 childrenFrom the state license
A daycare without an item may still offer it; ask.

Cost

Tuition and costs

Three Tree Montessori lists yearly tuition from $1,300 to $20,507. For comparison, full-time toddler care at a child care center in King County has a median price of $390 a week (U.S. Department of Labor, 2022).

Yearly · program, in its own wordsPrice
Children's House & Elementary After School Care, end of class until 5:30 pm$1,700
Children's House & Elementary Before School Care, 7:30 am until class begins$1,300
Children's House & Elementary Combined Before and After School Care$2,900
Children's House Program: Full Day, Monday-Friday, 9:00 am – 3:15 pm$18,207
Children's House Program: Half Day, Monday-Friday, 9:00 am – 1:00 pm$15,509
Toddler After School Care, end of class until 5:00 pm$2,000
Showing 6 of 10 · Show all 10
Toddler Before School Care, 8:00 am until class begins$1,600
Toddler Combined Before and After School Care$3,500
Toddler Program: Full Day, Monday-Friday, 9:00 am – 3:15 pm$20,507
Toddler Program: Half Day, Monday-Friday, 9:00 am – 12:30 pm$16,537
Application Fee (one time only per family, non-refundable)$75
10 posted prices. Rates change, so confirm before you enroll.
King County medians, full time, per week

Infant

Center$478
Home daycare$347

Toddler

Center$390
Home daycare$310

Preschool

Center$390
Home daycare$310

School age

Center$289
Home daycare$245

County median full-time prices at centers and home daycares, U.S. Department of Labor, National Database of Childcare Prices, 2022 (the latest year). Not this daycare's rates; prices have risen since.

State record

Inspection reports for Three Tree Montessori

Washington State Department of Children, Youth, and Families publishes inspection reports on its own website; we have not added them to this page yet. Use the link below to read them there.

License

Status
Licensed and operating
License type
Licensed child care center
Capacity
234 children
Ages
Toddlers, preschoolers and school-age children
First licensed
2003
License number
#268895
See the state's record

Inspections

Washington State Department of Children, Youth, and Families publishes inspection reports on its own website; we have not added them to this page yet. Use the link below to read them there.

Washington publishes its inspection reports on its own site. Read them there.

Copied from Washington State Department of Children, Youth, and Families on October 2, 2026. Rule wording, severity and dates are the state's.

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FAQ

Questions about Three Tree Montessori

Is Three Tree Montessori licensed?

Yes. Washington State Department of Children, Youth, and Families lists it as licensed and operating, first licensed February 13, 2003.

Does Three Tree Montessori have inspection violations?

Washington State Department of Children, Youth, and Families publishes inspection reports on its own website; we have not added them to this page yet. Use the link below to read them there.

How many children can Three Tree Montessori care for?

234, the licensed capacity on the state record. It is licensed to serve toddlers, preschoolers and school-age children.

What are Three Tree Montessori's hours?

Monday to Friday, 7:30 AM to 5:30 PM. Holiday hours can differ.

How much does Three Tree Montessori cost?

Yearly tuition from $1,300 to $20,507, as it lists it.

What is Three Tree Montessori's phone number?

(206) 242-5100.

Where is Three Tree Montessori?

220 Sw 160 St, Burien, WA 98166. The nearest other daycare we list is Millennium Kids Child Care Center, 0.1 miles away.

Sources: Washington State Department of Children, Youth, and Families (license) · U.S. Department of Labor, 2022 (county prices).