Westborough MA Real Estate Agents | Lassen Realty

Lassen Realty helps buyers and sellers in Westborough, MetroWest and across Massachusetts with practical guidance, local knowledge and personal service.

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Westborough & MetroWest Real Estate Agents for Buyers and Sellers

Lassen Realty is a Westborough, Massachusetts real estate brokerage serving home buyers, sellers and investors across MetroWest and throughout Massachusetts.

Knowledge & Integrity

Mark Kosa and Liz Lassen combine decades of real estate experience with practical backgrounds in home inspection, electrical work, law, negotiation and business.

Mark and Liz are full-time Massachusetts real estate professionals and longtime MetroWest residents. They bring practical experience, local knowledge, careful analysis and a client-first approach to each transaction. Whether you are buying, selling or investing, the goal is to help you understand your options, make informed decisions and move through the process with a clear plan.

Mark Kosa, Realtor®
MA Lic #51326

In addition to holding his real estate license for over 20 years, Mark’s background brings a wealth of practical experience to his work. Whether you are buying, selling or investing, his experience as a Home Inspector and Master Electrician make him a valuable resource for Lassen Realty clients.

Liz Lassen, Realtor®
MA Lic #148877

Liz is a licensed attorney and real estate broker. After practicing biotech patent law for two decades, she started Lassen Realty to apply her negotiation, analytical and business skills to solve real problems for real people.

How We Work Together

  • Start with a conversation about your goals and timing.
  • Review the relevant market data and your options.
  • Develop a practical buying or selling plan.
  • Keep track of deadlines, details and communication.
  • Stay available through closing and beyond.

MetroWest… and Beyond

Lassen Realty is based in Westborough and works throughout MetroWest, including communities along the Route 9 and I-495 corridors. From older homes and established neighborhoods to new construction, condominiums and townhomes, Mark and Liz understand the variety of housing found across the region.

When your plans extend beyond MetroWest, Lassen Realty can also represent buyers and sellers elsewhere in Massachusetts, including Cape Cod.

 

Realty Notes

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Schedule a Free Consultation

Thinking about buying or selling, but not sure about the timing? We are happy to talk through your goals, the local market and the next steps. Your move may be months or even years away. A conversation now can help you make a better-informed plan when the time is right.

 

Frequently Asked Questions

What areas does Lassen Realty serve?

Lassen Realty is based in Westborough and primarily serves buyers and sellers throughout MetroWest Massachusetts. Mark and Liz are licensed in Massachusetts and can also work with clients in other parts of the state.

Does Lassen Realty work with both buyers and sellers?

Yes. Lassen Realty represents home buyers and sellers and also works with real estate investors. The process begins with understanding your goals, timing and priorities so Mark and Liz can recommend an appropriate plan.

Can I talk with you even if I am not ready to buy or sell yet?

Yes. Real estate decisions often begin long before a property is listed or an offer is made. Mark and Liz are happy to discuss your goals and help you understand what you may want to prepare for next.

What makes Lassen Realty different?

Lassen Realty combines local real estate experience with practical professional backgrounds. Mark brings experience in real estate, home inspection and electrical work. Liz is a real estate broker and licensed attorney with a background in biotechnology patent law, negotiation and analysis.