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​Originally trained as a litigator, Jason knows that the best way to avoid problems is to start with a well thought out and carefully crafted document. Jason's clients benefit from his 25+ years of practice, his comprehensive knowledge of real estate law and his experience assisting clients in thousands of transactions. 

Jason is a frequent lecturer on the topic of residential real estate transactions and served as faculty for the University of Wisconsin Law School Lawyering Skills Course for Residential Real Estate Transactions. As a member of the Wisconsin Realtor Association Real Estate Forms Committee, Jason lends his expertise to the WRA regarding the use and modification of Wisconsin State approved forms used in real estate transactions.

Born and raised in New York City, Jason came to Wisconsin to attend the UW Law School. In his free time, Jason may be found spending time with his family, playing tennis, sailing on Lake Mendota or searching for a lost golf ball. He lives in the Town of Middleton with his wife and two children.

Attorney Jason Greller - Wisconsin Real
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JUSTIA 10/10 Real Estate Lawyer Rating

AVVO Top Real Estate Attorney Rated 10/10

AVVO Client Choice Award Winner - Madison, Wisconsin

Best Real Estate Lawyers in Madison, WI - Expertise Rated

5 Star Google Rated Wisconsin Real Estate & Property Law Attorney


University of Wisconsin Law School, Madison, WI (J.D. 1995 - Honors Level GPA)
Trinity College, Hartford, CT (B.A. 1987); New York State Regent Scholar.


State Bar of Wisconsin (1995)
Wisconsin Realtors Association Real Estate Forms Committee
Admitted - U.S. District Court for the Western District of Wisconsin
Admitted - U.S. Court of Appeals for the Seventh Circuit


Wisconsin Law Journal - August 23, 2006 - Attorney Greller's practice is featured in an article on the changing real estate market and Wisconsin residential real estate lawyers.
New York Times - January 3, 2006 - "Owner's Web Gives Realtors Run for Money"
Attorney Greller's services discussed in front page article on growth and success of Madison's fsbo market.
Wisconsin Law Journal - June 30, 2008 - Attorney Greller featured in front page story discussing his innovative services for Sellers of residential real estate.
Wisconsin Law Journal - November 16, 2009 - Attorney Greller featured in article discussing the impact of the economic downturn on the Wisconsin legal profession.

The Cap Times - May 17, 2023 - Attorney Greller featured in article discussing the rising cost of rents in Madison and the relationship to changes in landlord/tenant law.


2022 Annual Real Estate Update

Madison, WI - State Bar of Wisconsin

Featured presenter at annual State Bar of Wisconsin Real Estate Update seminar.

Avoiding Residential Real Estate Pitfalls
Wisconsin Dells - State Bar of Wisconsin
Featured presenter at annual State Bar of Wisconsin meeting.
Practical Considerations in Residential Real Estate Transactions in Wisconsin
Madison, WI - Lorman Education Services
Featured presenter to lawyers, realtors and bankers on representing parties in residential real estate transactions.


WISC-TV Channel 3000 - Madison CBS Affiliate
January 3, 2006 - 10 O'Clock News
Attorney Greller featured as an expert on Madison's growing FSBO real estate market.

WMTV-TV NBC 15 - Madison NBC Affiliate
December 15, 2008 - 5 and 6 O'Clock News
Attorney Greller interviewed in feature on challenging the assessed value of real estate.​

WKOW-TV ABC 27 - Madison ABC Affiliate

March 26, 2020 - 5 O'Clock News 

Attorney Greller interviewed in feature on navigating challenges facing landlords and tenants during Covid 19 crisis.

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