About O’Neill development

Large, elegant mansion with a well-manicured front lawn, fountain, and colorful autumn trees.

CONTINUITY

O’Neill Development is a construction, remodeling, and development firm that has been active in the DMV. Founded in 1975 by Brendan O’Neill Sr, the legacy continues with Brendan O’Neill Jr, ensuring the same dedication to quality and customer service. The company has custom-built or remodeled over 375 homes of various sizes, including four residential themed communities. Each of the homes that O’Neill has built remains unique because O’Neill Development has never built the same house plans twice. O’Neill Development has been recognized for its high-quality custom work in both national and local publications and has received awards of excellence for its historic restoration and urban infill work from the State of Maryland and local jurisdictions. O’Neill was the first in this region to build to Passive House standards and remains committed to best practices in green building.

Large stone and brick house with multiple chimneys, windows, and a manicured lawn, surrounded by trees.

MANAGEMENT

O’Neill Development specializes in custom residential work, providing extensive pre-construction and construction services. For the client, this means a broad band of help in budgeting, architect selection, design development, and problem-solving during the critical early stages of planning; careful management by agenda and strict site control during the construction period; and thorough after-market service.

A two-story white house with dark shutters, a front porch with columns, a green lawn, trees, and a cloudy sky.

TEAMWORK

In all custom work performed, the O’Neill Development Manager believes in teamwork and transparency, particularly stressing the importance of a strong relationship among the client, architect, builder, and subcontractor. It is our firm belief that this close connection among all parties is absolutely necessary for a successful project. The company continually evaluates subcontractors and suppliers, selecting a team that meets our required nexus of quality, dependability, and fair pricing.

Old wooden barn with metal roof, surrounded by yellow flowers and green trees.

COMPANY ORGANIZATION

O’Neill Development employs a talented and dedicated staff that manages the office and handles job files and selections. Experienced project managers are responsible for managing individual projects on-site. Once assigned to a job, managers remain committed until the work is completed and they punch out. Aftermarket service is the responsibility of each project manager when their job is completed. Our project managers represent over 115 years of building and management experience. A dedicated office staff handles the tracking and office control of each job. In a high turnover industry such as construction, O’Neill Development is unusual in its employee tenure. The average employment length for the entire company is over 20 years.