BROKERAGE

The brokerage behind the team.

David Pham and Kevin Castillo are affiliated with Weichert, REALTORS® – Rainbow Properties, an independently owned Newark office.

Visit or contact the office

6658 Thornton Avenue
Newark, CA 94560

510-944-1454 · Official office website

Adam Modzeleski is listed as Broker/Owner, CA DRE #01918384. His NMLS #1462961 appears in the supplied brokerage material; confirm current status with the relevant licensing registry before relying on it.

Rainbow Properties team at the Newark office — Rainbow Properties team photograph supplied with the original project.

NEWARK ROOTS

Serving the Bay Area from Newark since 1983.

The brokerage says it has operated from the same Newark location since 1983. Today, Rainbow Properties is a locally operated Weichert affiliate led by broker/owner Adam Modzeleski.

Its own description brings real estate and lending services together under one roof. The office serves buyers and sellers across Bay Area communities, while this site offers general homeownership lessons for anyone who wants to learn.

Read more on the brokerage’s About page and official office site .

THE TEAM BEHIND THE MISSION

Local knowledge, shared openly.

David and Kevin work in Bay Area communities and contribute to this free learning resource. Professional services are separate from the lessons.

Meet Our Team →

ARDENWOOD, FREMONT · SPRING 2026

Neighbors came together for a food drive.

On April 30, the Rainbow Properties team delivered food-drive bags around Ardenwood. They returned on May 5 to collect donations from neighbors, including canned goods, pasta, rice, cereal, oatmeal, and other pantry staples.

David Pham shared the story to thank the Ardenwood community and show the people behind the effort. The photos below follow the team from preparation through collection.

Read David’s Ardenwood food drive story ↗ · Published May 6, 2026

Ardenwood Food DriveWatch the team video ↗

Rainbow Properties team holding food-drive flyers outside the office — The team before the drive

Team members preparing the food drive at the brokerage office — Preparing the collection

Food-drive collection bag with an April 30 flyer — The neighborhood bag and flyer

Two volunteers beside a car trunk filled with donated pantry goods — Neighbors’ donations

Collected food-drive bags and pantry staples at the office — Collected pantry staples

Two team members with bags of donated food — Team members with the donations

Photos: Weichert, REALTORS® – Rainbow Properties.

HISTORICAL PRESS

2019 Best of Newark recognition

Weichert’s September 2019 announcement reports that the office won the Argus Readers’ Choice “Best Real Estate Office” award and that Adam Modzeleski was recognized in two individual categories. This is a historical announcement.

Read the Weichert announcement

Ready to Make Your Next Move?

For professional real estate assistance, connect with David or Kevin through the team page.

Meet Our Team Contact Us ↗

Affiliation & disclosures

Each Weichert® franchised office is independently owned and operated. Equal Housing Opportunity.

Team license numbers and brokerage identifiers shown here come from the supplied project. Check current license status through the California DRE license lookup. Educational content on this site is separate from a professional engagement and is not individualized advice.