Diosdi & Liu

Diosdi and Liu is a San Francisco tax law firm that handles the kind of property and tax disputes that require genuine legal firepower. The firm's attorneys combine years of experience in California tax law with a practical understanding of how the Assessor's office and the Assessment Appeals Board actually operate. They're not a high-volume shop that files appeals on autopilot. They take cases where the complexity or the dollar amount justifies serious legal attention. The firm has built its reputation on international tax law and complex domestic disputes, but it handles California property tax matters with the same depth. That background matters when ownership structures, entity transfers, or cross-border property holdings introduce complications that a typical consultant isn't equipped to handle. If your property tax situation involves an LLC, a trust, or a recent corporate restructuring, this is the kind of firm you want reviewing it.

Diosdi and Liu offers legal representation for property tax appeals before the San Francisco Assessment Appeals Board and, when necessary, in Superior Court. The firm reviews assessed values for residential and commercial properties, challenges incorrect base year valuations, and disputes supplemental assessments resulting from sales or construction activity. A significant portion of the firm's property tax work involves ownership transfers and entity restructuring. California's change-of-ownership rules are complicated, and many investors and business owners inadvertently trigger reassessment when they transfer interests in LLCs or partnerships that hold real estate. Diosdi and Liu advises clients before these transactions happen and represents them in disputes with the Assessor afterward. The firm also handles business personal property assessments, which affect companies that own equipment, machinery, or other taxable property in California. These assessments are often incorrect and frequently overlooked by property owners who don't realize they're even subject to them. For clients with complex international structures that include California real estate, the firm's international tax background adds a layer of analysis that most local firms can't provide.

The firm starts every property tax matter with a legal review of the ownership structure and the assessment itself. They look at the property record, the transaction history, and any relevant filings with the Assessor to identify where the dispute actually lives. For straightforward overassessments, that analysis is quick. For entity-related reassessment disputes, it can take longer to trace the ownership chain and confirm whether an exclusion applies. Once the basis for a challenge is established, the attorneys draft a formal appeal or a claim for reassessment exclusion and file it with the appropriate county office. They handle all correspondence and negotiations with the Assessor's office and prepare clients for hearings when necessary. The firm is realistic about timelines. San Francisco's appeals board has a significant backlog, and formal hearings often take a year or more to schedule. They keep clients informed as cases move through the process.

Diosdi and Liu serves clients in San Francisco and throughout the Bay Area, including Marin, San Mateo, Alameda, Contra Costa, and Santa Clara counties. The firm also takes property tax matters in other California counties when the case involves complex legal questions or multi-county portfolios. For clients with international holdings that include California real estate, the firm handles cross-border coordination as part of its broader international tax practice.