Mattia & Yousif Law, established in 2016, operates from Suite 265 on Avocado Boulevard in La Mesa's Casa de Oro district below Mt Helix, serving estate planning, business transactions, and personal injury clients. The personal-injury practice handles auto-accident and premises-liability claims, and vehicle-damage appraisals from shops such as AA Auto Repair & Transmission contribute to the evidence packages assembled for insurance-carrier demand letters. Steve Mattia (State Bar #308418) holds the firm's business-transactions portfolio, structuring California LLC formations, corporate filings, and commercial licensing under the California Corporations Code. Arabic and English language capability expands the client base across San Diego County's East County communities, and injury claimants coordinate treatment documentation with primary-care providers like Encompass Family and Internal Medicine Group for medical-record continuity during case development. Highest-complexity estate matters involve A-B trust administration with IRS Form 706 estate-tax-return preparation, generation-skipping trust funding, and Crummey-power withdrawal notice compliance across multi-beneficiary structures.