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O'Neill Development is a construction, remodeling and development firm that has been active in Maryland, Virginia and Washington D.C. since 1975. The company undertakes a broad spectrum of jobs from new and remodeled residential to land development, institutional, commercial and historic restoration.
New residential construction includes reproductions of historic houses, adaptations of period and geographic styles, copies of European classics, and modern adaptations of traditional styles. O'Neill has developed a number of small subdivisions each with a different architectural theme.
Residential remodeling work ranges from enhancing exterior architectural detail to "whole house" rehabilitation, including roof raising and house "moving." O'Neill has also done extensive historic restoration work.
Institutional and commercial work includes remodeling, new construction and tenant build-out.
Thank you for visiting our website. We welcome your interest and would gladly respond to any inquiries. We can be reached at 301-840-9310 x103 or info@oneilldev.com.
O'Neill recognizes the sound principles of sustainability and the importance of "Green Building" and is committed to best practices in this area.
Company News
O'Neill Development, along with David Peabody Architects, has completed and sold the "Passive House" at 4717 Chelsea Lane in Bethesda, MD. This super insulated home is designed to look like a traditional American Four Square house and is the first of its kind in this region. Our Passive House is nearly airtight. It uses roughly 90% less heating and cooling energy than the average home. It is designed as an integrated system, with site, energy, ventilation, air quality, humidity, health and comfort all taken into account. There will be constantly re-circulating fresh air, even temperatures throughout the house and "green" materials as standard. USA TODAY, BLOOMBERG NEWS, NPR AND local TV and BETHESDA MAGAZINE have featured our Passive House in recent articles and segments. And the Maryland-National Capital Building Industry Association awarded us with their Annual Green Building Award for our Passive House. It is fitting that the buyer of the Chelsea house is the CEO of CADMUS GROUP of Arlington VA, “an energy, environmental and public health consulting company providing creative, multidisciplinary sustainability solutions for the built environment”. For further information on our exciting Passive House go to our blog at: passivehouse.greenhaus.org.