As a bilingual tax and immigration firm in Chula Vista, A&R Immigration and Tax Services prepares federal and state returns alongside immigration-document consultation and notary public services from its H Street office in the Broadway corridor. ITIN-applicant filings pair with immigration-paperwork preparation, a combined workflow that parallels the legal guidance at Gonzalez Garcia APC for clients navigating both tax and residency matters simultaneously. The practice handles individual and small-business returns with California Form 540 and Schedule CA adjustments, addressing the state-specific conformity differences that affect filers in the 91910 ZIP code. Property-purchase transactions for first-time homebuyers in western Chula Vista generate referral coordination with Peraza Real Estate & Associates when buyers need tax-return transcripts and income documentation for escrow. Highest-complexity engagements involve dual-status alien returns requiring Form 1040-NR with treaty-based position disclosures under IRC Section 7701(b) substantial-presence calculations.