--- title: "O'Neill Development — Home Builders | Houzz" canonical_html_url: https://www.houzz.com/professionals/home-builders/o-neill-development-pfvwus-pf~973949158 markdown_url: https://www.houzz.com/md/professionals/pf~973949158.md entity_type: LocalBusiness business_name: "O'Neill Development" category: ["Home Builders"] image: https://st.hzcdn.com/fimgs/73a3c04802fecdbb_4967-w400-h400-b0-p0--.jpg address: "11 Russell Ave, Gaithersburg, Maryland 20877, United States" latitude: 39.1419 longitude: -77.189 phone: "(301) 840-9310" website: http://www.oneilldev.com rating: 5 review_count: 7 followers: 79 last_updated: 2026-09-18 --- # O'Neill Development Original Houzz profile: [O'Neill Development](https://www.houzz.com/professionals/home-builders/o-neill-development-pfvwus-pf~973949158) ## Professional summary - **Primary category:** Home Builders - **Location:** Gaithersburg, MD - **Serves:** Silver Spring, Bethesda, North Bethesda, Potomac, Chevy Chase, North Kensington, Kensington, Chevy Chase View, North Chevy Chase, Great Falls - **Houzz rating:** 5.0 out of 5 (7 reviews) ## About ### Houzz Badges - Star Houzzer - Recommended on Houzz - 1,000 Ideabook Saves 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. ### Services Provided - Custom Homes - New Home Construction - Home Remodeling - Home Additions - Energy-Efficient Homes - Green Building - Home Restoration - Historic Building Conservation - Prefab Houses ### Areas Served - Silver Spring - Bethesda - North Bethesda - Potomac - Chevy Chase - North Kensington - Kensington - Chevy Chase View - North Chevy Chase - Great Falls ### Typical Job Cost $200,000 - ## Business Details | Field | Value | | --- | --- | | Business Name | O'Neill Development | | Address | 11 Russell Ave, Gaithersburg, Maryland 20877, United States | | Phone | (301) 840-9310 | | Website | http://www.oneilldev.com | | Followers on Houzz | 79 | **Social profiles:** - Blog — http://www.oneilldev.com/ ## Contact - **Houzz profile:** [O'Neill Development](https://www.houzz.com/professionals/home-builders/o-neill-development-pfvwus-pf~973949158) - **Website:** http://www.oneilldev.com - **Phone:** (301) 840-9310 ## Credentials **Certifications & Awards** - http://www.oneilldev.com/publications.php - EPA Lead Safe Certified Firm ## Reviews **Overall rating: 5.0 out of 5 — 7 reviews** ### All 7 reviews **★★★★★ — Wiedemann Architects LLC, Jan. 2016** > Wiedemann Architects has worked with O’Neill Development on numerous projects over the past twenty years, ranging from several new homes to sensitive renovations and seamless additions to historic homes. They consistently bring the highest quality of both project management and quality of craftsmanship to each project. They are known for their timely completion of the work and dedication to service to our clients. Their exceptional superintendents and subcontractors work closely as a team to complete the work on time and on budget. I recommend them highly and without reservation. **★★★★★ — wgeier, May 2015** > Everyone from O"neill Development involved with our residential addition project was professional and personable. They were responsive to the client's needs, organized, met the schedule deadlines and provided the highest level of craftsmanship. **★★★★★ — steve\_norwood, May 2015** > My company has worked for O'Neill Development on projects ranging in scope from small additions, to multimillion dollar homes. In every case they have provided impressive customer service to their clients, and provide some of the highest quality work in the area. We work with a large number of area General Contractors, and our experience has been that nobody does it better, or is more honest with their clients than they are. **★★★★★ — josephclaxtonwalker, May 2015** > The O'neills are not just builders, they are artists and it shows on every one of their jobs. The architecture is carefully chosen and they have a team of old school, carpenters, project managers, and other technicians that run things the way a job should be run, ie confidently, competently, and thoroughly. Brendan brings his artistic eye to each plan and "boring" has no place in the finished product. We have been doing independent quality control services for O'Neill for about 10 years or more. We look at every component including HVAC, Electric, plumbing, structure, exterior finishes, and final finishes If there is one distinguishing characteristic of their work it is that we find the latest technical innovations combined with the best of the old construction techniques, that is a rare combination these days. **★★★★★ — rreese33, April 2015** > I have worked with O'Neill Development for over twenty years. They have consistently proven their commitment to providing the highest quality product time after time. To me, O'Neill represents the very best that our industry has to offer. **★★★★★ — davidneumann, Jan. 2015** > Colleague David Neumann, FAIA > > Over the past 25 years my firm has worked with O’Neill Development on more than 20 projects ranging from modest renovations to projects of considerable scope, sophistication and complexity. They have brought a dependable team of high quality craftspeople and subcontractors to each of our projects. They stand behind their work and have been fair and accommodating in their dealings with our clients. I look forward to working with them in the years ahead. **★★★★★ — Peabody Architects, Nov. 2014** > I have worked with O'Neill Development for over twenty years on both new homes and renovations. By every standard -- quality of workmanship, timely completion of work, and service after completion --they are at the top of the list. Because of that and because of the quality of of their job superintendents and subcontractors, they have become our go-to partner in all of our high performance and Passive House projects. > > David Peabody > Peabody Architects ## Selected projects - [Living Rooms & Family Rooms](https://www.houzz.com/hznb/projects/living-rooms-and-family-rooms-pj-vj~1731511) - Location: Chevy Chase, MD - Photos: 14 - [Recent Remodels](https://www.houzz.com/hznb/projects/recent-remodels-pj-vj~1731486) - Location: Silver Spring, MD - Photos: 18 - [Kitchens](https://www.houzz.com/hznb/projects/kitchens-pj-vj~1731514) - Location: Potomac, MD - Photos: 7 - [Dining Areas](https://www.houzz.com/hznb/projects/dining-areas-pj-vj~1731513) - Location: Not specified - Photos: 7 - [Exteriors](https://www.houzz.com/hznb/projects/exteriors-pj-vj~1731481) - Location: Not specified - Photos: 14 - [Traditional Style "Old Chevy Chase, MD Home"](https://www.houzz.com/hznb/projects/traditional-style-old-chevy-chase-md-home-pj-vj~753472) - Location: Chevy Chase, MD - Photos: 47 - [English Country Homes, Potomac, Maryland](https://www.houzz.com/hznb/projects/english-country-homes-potomac-maryland-pj-vj~973401) - Location: Potomac, MD - Photos: 9 - [Potomac, Maryland](https://www.houzz.com/hznb/projects/potomac-maryland-pj-vj~973392) - Location: Potomac, MD - Photos: 10 - [Easton, MD](https://www.houzz.com/hznb/projects/easton-md-pj-vj~973389) - Location: Easton, MD - Photos: 5 - [Waterfront Kitchen](https://www.houzz.com/hznb/projects/waterfront-kitchen-pj-vj~694822) - Location: Easton, MD - Photos: 15 - Description: This home on the Eastern Shore of Maryland began as a modest 1927 home with a central hall plan. Renovations included reversing the kitchen and dining room layout , adding a large central island and hood to anchor the center of the kitchen. The island has a walnut counter encircling the working island and accommodates additional seating. The main sink looks out to the north with beautiful water views. The southwest bay window affords a seating area with built-in bookshelves adjoining the breakfa… - [Home Office](https://www.houzz.com/hznb/projects/home-office-pj-vj~1731500) - Location: Potomac, MD - Photos: 1 - [Outdoor Living](https://www.houzz.com/hznb/projects/outdoor-living-pj-vj~1731517) - Location: Not specified - Photos: 2 - [Bathrooms](https://www.houzz.com/hznb/projects/bathrooms-pj-vj~1731516) - Location: Not specified - Photos: 3 - [Entry Ways & Foyers](https://www.houzz.com/hznb/projects/entry-ways-and-foyers-pj-vj~1731508) - Location: Not specified - Photos: 7 [See all 14 projects](https://www.houzz.com/professionals/home-builders/o-neill-development-pfvwus-pf~973949158) --- *Source: Houzz professional profile. Reflects the profile as of 2026-09-18.*