WASHINGTON, DC-Local assets figure prominently in Equity Residential’s agreement to sell a 27-asset portfolio to a joint venture of the Real Estate Principal Investment Area of Goldman, Sachs & Co. and Greystar Real Estate Partners LLC for $1.5 billion.

Namely, there are some 2,105 units in the DC area, comprising $517.7 million of the purchase price. Transwestern’s Mid-Atlantic Multifamily Group, headed by co-directors Dean Sigmon and Robin Williams helped broker the local piece of the deal.

Equity Residential said in a relese that it granted the buyer the right to exclude up to 8% of the value of these assets from their purchase. As a result, Goldman Sachs and Greystar have the contractual right to acquire all of the assets for $1.5 billion, but are obligated to purchase not less than $1.38 billion of assets.

“With this transaction we will have made significant progress selling assets in our exit markets and non-core assets in primary markets to fund our share of the acquisition of Archstone,” David J. Neithercut, Equity Residential’s President and CEO, says in the release. The buyers have deposited $150 million in escrow and have waived their due diligence contingency. The transaction is expected to be completed in two separate closings during the first quarter.

“Demand for multifamily assets remains very strong and we are pleased that our original pricing expectations were met by this transaction,” Neithercut says.