Quality - New Homes
Renovations & Additions

Aging-In-Place Home Modifications


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J.A.R. Construction is an experienced, EPA-certified residential home builder and remodeler committed to meeting your unique needs. We do quality kitchens, baths, accessibility modifications, additions and complete home renovations, including historic restorations. We can provide architectural and design services and are certified Aging-In-Place specialists (CAPS). Let us make your unique vision a reality


J.A.R. Construction Company is a creative and quality conscious Bethesda-based residential builder that completes large and small projects in Maryland and DC. With over 20 years in business, we have renovated old and new homes, including the oldest house in the Cleveland Park Historic District, and the Hartman Cox modern master work in Potomac.  As a small business we bring a higher level of customer service, flexibility, and customization to every project – we sell quality, not volume.  And we have the experience necessary to do it right the first time, saving time, money and interruption to life’s routines.  By working with the best local architects and designers we can offer design build services tailored to the individual needs of our clients. 

For customers who need a qualified builder with CAPS training, we offer high quality Accessibility and Aging-In-Place home modifications specifically tailored to fit each client’s unique needs.  We collaborate with each customer to plan and build a needed addition or to make just enough changes to maintain and accommodate evolving lifestyles.  J.A.R. combines its own specialized training with those of top-flight architects, designers, OT’s, PT’s and Accessibility Consultants, bringing customized solutions to each project.

Jonathan Reitkopp, president of J.A.R., is an EPA certified remodeler and a certified Aging-In-Place specialist. Reitkopp studied Architecture and Fine Arts at Cornell University and Syracuse University, graduating from the latter in 1987.  Reitkopp started his career as a commercial space planner and designer for Eaton Design Group and the Weihe Partnership, before becoming a Construction Manager for Monarch Construction in 1989. After starting his own company in 1990, Jon built on his design and management experience with many years of hands-on carpentry, finally launching J.A.R. in 1993. 

J.A.R. Construction takes pride in the quality of its work, and its unmatched level of personal service. We do not employ sales people or layers of project managers.  We do use skilled craftsman, who are licensed, bonded, and insured. To discuss a future project please click the “CONTACTS” tab above or email Jon@JARConstructioncompany.com directly.

We look forward to working with you to provide sensible, custom and beautiful solutions to make your unique vision a reality

TEL: 301.951.0701 EMAIL:
FAX: 301.951.0704 LOCATION: 7813 Moorland Lane, Bethesda, MD 20814
Licensed Insured Bonded
MHIC#45203 DHIC#7596