
BAREIS MLS IDX Real Estate Websites for North Bay REALTORS®
Built for agents and brokers across Marin, Sonoma, Napa, Solano & Mendocino Counties

Built for agents and brokers across Marin, Sonoma, Napa, Solano & Mendocino Counties
North Bay REALTORS® need an IDX website that keeps pace with one of Northern California’s most competitive real estate markets. OSI IDX builds IDX real estate websites with a direct BAREIS MLS® feed, giving your buyers accurate, up-to-date listings across Marin, Sonoma, Napa, Solano, and Mendocino Counties – without the bloated pricing or CRM lock-in of the big all-in-one platforms.
Whether you’re working the Wine Country luxury market in Napa and Sonoma, coastal listings along Mendocino’s North Coast, or commuter-friendly homes in Marin and Solano, your website should reflect the areas you actually serve. OSI IDX gives you a semi-custom site built around your brand, backed by OSI Express, a family-owned real estate technology company operating since 1982.
Trusted by 1,000+ REALTORS® & Brokers
A direct BAREIS feed is only part of the equation. Here’s what sets an OSI IDX website apart from other BAREIS IDX vendors:
Does OSI IDX offer a direct BAREIS MLS® feed?
Yes. OSI IDX websites connect directly to the BAREIS MLS® feed, giving your site accurate, current listings for Marin, Sonoma, Napa, Solano, and Mendocino Counties.
Can I also show listings from the NorCal MLS Alliance MLSs?
BAREIS members with access to NorCal MLS Alliance data can display that broader coverage on their OSI IDX website, extending your reach across additional Northern California counties.
How much does a BAREIS IDX feed cost?
OSI IDX charges $25/month per IDX feed in addition to the flat website price – there are no hidden setup fees or long-term contracts tied to your BAREIS feed. View full pricing details
Do I need to use OSI IDX’s CRM?
No. OSI IDX websites work with the CRM you already use – there’s no CRM lock-in.
How is OSI IDX different from other BAREIS IDX vendors?
OSI IDX combines a direct BAREIS feed with flat, all-inclusive pricing, semi-custom design, and real, US-based support – backed by OSI Express, a family-owned real estate technology company operating since 1982.
BAREIS MLS® (Bay Area Real Estate Information Services) is the broker-owned multiple listing service serving Marin, Sonoma, Napa, Solano, and Mendocino Counties across California’s North Bay, Wine Country, and North Coast regions – including San Rafael, Santa Rosa, Petaluma, Napa, Fairfield, Vacaville, and Vallejo. Founded in 1997, BAREIS now serves more than 10,000 members. Through its participation in the NorCal MLS Alliance data-sharing project, BAREIS members also gain access to listing data from seven other Northern California MLSs, extending coverage to 26+ counties across the region – one of the broadest data-sharing arrangements of any MLS in the state.
OSI IDX proudly serves REALTORS® and brokers across the North Bay, including:
Join North Bay agents who’ve made the switch to a faster, better BAREIS IDX REALTOR® website. See what’s included
OSI IDX
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real estate agents and brokers.
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