Our law practice is devoted primarily to shared ownership, including fractional ownership of vacation homes and resorts, tenancy in common (TIC) for both occupancy and investment, subdivisions and condominium conversions, equity sharing, shared appreciation mortgages, investment partnerships, crowdfunding, private securities offerings, and other co-ownership matters. Over the past five years, we have assisted numerous startups developing web-based platforms for real estate investment and equity sharing.

We work on projects ranging from individual homes to large developments, and represent sellers, buyers, developers, internet entrpeneurs, and real estate professionals of all kinds.

From our offices in San Francisco California and Paris France, we have worked on projects all over the world, including most U.S. States, as well as Mexico, Canada, Italy, France, Spain, Portugal, England, Ireland, Morocco, Argentina, Nicaragua, Costa Rica, Panama, Dominican Republic, Barbados, St. Barts, Bermuda, Granada, St. Kitts, Belize, Thailand, and Indonesia. Since 1985, we have prepared fractional ownership documentation for over 6,000 clients.

In addition to advising clients, Andy Sirkin has personally developed more than 35 real estate projects throughout the world, and managed a successful real estate brokerage. He was an accredited instructor with the California Department of Real Estate, and frequently conduct fractional ownership workshops for buyers, sellers, developers, and real estate agents. He is a vocal advocate for creation of affordable home ownership opportunities, has made numerous appearances on San Francisco Bay Area television and radio, and addressed the Commonwealth Club of California. Andy was the original co-author of  The Condominium Bluebook, published annually by Piedmont Press, and the author of The Equity Sharing Manual , first published by John Wiley and Sons in November 1994 (order the book).

Rosemarie MacGuinness has practiced with SirkinLaw APC since 2006, focusing on condominium conversion, TICs, and co- ownership in San Francisco. She has prepared hundreds of tenancy and common agreements, condominium CC&Rs, and related amendments for 2-4 unit buildings, and advised buyers, seller, Realtors and developers on all aspects of small-building transactions. Rosemarie is also a certified mediator specializing in co-owner disputes including nonpayment, expense allocation, maintenance/alteration, and noise. She has advised and drafted language for the San Francisco Association of Realtors and Sterling Bank & Trust, and regularly publishes articles and presents educational workshops. Rosemarie also has over 20 years experience as a litigator with a major construction law firm, as in-house counsel and Director of Arbitration at a securities exchange, as a real estate broker, and as a rental property owner.