How many homes has Zachary Costello sold?

Zachary Costello has completed 27 verified sales with a total volume of $20.7M. This data comes directly from verified transaction records, not self-reported numbers.

What areas does Zachary Costello specialize in?

Zachary Costello is most active in Alexandria, Reston, Sterling, Chantilly, Burke, Virginia. Their market expertise spans multiple neighborhoods across Northern Virginia.

What is Zachary Costello's average sale price?

Zachary Costello's average sale price is $767K with a 101.7% sold-to-list ratio, indicating strong negotiation skills. Their average days on market is 24 days.

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Zachary Costello

Platinum

Stello Homes, LLC

About Zachary

Zachary Costello is a real estate professional with Stello Homes, LLC, specializing in Aldie, Alexandria, Arlington and surrounding areas. With 29 career transactions and an average sale price of $767,490, Zachary brings proven local market expertise to every client.

Areas of Expertise

AlexandriaRestonSterlingChantillyBurke+10 more

Active in 22 ZIP codes across DC, VA

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Information Deemed Reliable But Not Guaranteed.

Data last updated: 04/17/2026.

View full MLS disclosures

The data relating to real estate for sale on this website appears in part through the BRIGHT Internet Data Exchange program, a voluntary cooperative exchange of property listing data between licensed real estate brokerage firms in which Keller Williams Realty participates, and is provided by BRIGHT through a licensing agreement.

The information provided by this website is for the personal, non-commercial use of consumers and may not be used for any purpose other than to identify prospective properties consumers may be interested in purchasing.

Some properties which appear for sale on this website may no longer be available because they are under contract, have Closed or are no longer being offered for sale.

Some real estate firms do not participate in IDX and their listings do not appear on this website. Some properties listed with participating firms do not appear on this website at the request of the seller.

This home sale information is not to be construed as an appraisal and may not be used as such for any purpose.

BRIGHT MLS is the (or a) provider of this home sale information and has compiled content from various sources. Some properties represented may not have actually sold due to reporting errors.

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