--- title: "Ronald Johnston and Associates, Architects — Architects & Building Designers | Houzz" canonical_html_url: https://www.houzz.com/professionals/architects-and-building-designers/ronald-johnston-and-associates-architects-pfvwus-pf~1292278065 markdown_url: https://www.houzz.com/md/professionals/pf~1292278065.md entity_type: LocalBusiness business_name: "Ronald Johnston and Associates, Architects" category: ["Architects"] image: https://st.hzcdn.com/fimgs/e8931887041213cb_3549-w400-h400-b0-p0--.jpg address: "11407 Barley Field Way, Marriottsville, Maryland 21104, United States" latitude: 39.3342 longitude: -76.9132 phone: "(410) 442-3667" website: http://rjarchitect.com rating: 5 review_count: 5 followers: 39 last_updated: 2026-09-06 --- # Ronald Johnston and Associates, Architects Original Houzz profile: [Ronald Johnston and Associates, Architects](https://www.houzz.com/professionals/architects-and-building-designers/ronald-johnston-and-associates-architects-pfvwus-pf~1292278065) ## Professional summary - **Primary category:** Architects - **Location:** Marriottsville, MD - **Serves:** Columbia, Ellicott City, Catonsville, Randallstown, Owings Mills, Pikesville, Milford Mill, Eldersburg, West Elkridge, Reisterstown, Ilchester, Elkridge, Garrison, Sykesville, Trial, Lisbon, Anne Arundel County, Baltimore County, Carrol County, Clarksville, Cooksville, Dayton, Frederick County, Glenelg, Glenwood, Gwynn Oak, Howard County, Marriottsville, Montgomery County, Prince George's County, Simpsonville, Stevenson, West Friendship, Windsor Mill, Woodbine, Woodstock - **Houzz rating:** 5.0 out of 5 (5 reviews) ## About ### Houzz Badges - Recommended on Houzz - 500 Ideabook Saves Ronald Johnston and Associates, Architects is an architectural firm specializing in residential architecture for both private clients and builders. Having practiced in Maryland for over 20 years, Ron's projects include a wide range of both custom and production single family detached homes, multifamily (townhouses), residential renovations, additions and alterations, and active senior housing, as well as the occasional small commercial project. The firm's work also includes approximately 20 new homes or substantial additions located in designated historic districts. Ron is a registered architect in the state of Maryland with almost 20 years in private practice, holds his M.Arch degree from U of M, and is a LEED Accredited Professional. He was awarded a full-term Graduate Fellowship to the University of Maryland School of Architecture, where he served as a student representative to U.M. Facilities Master Planning/Technical Committee, authored a successful research grant proposal to design and build an artificial sky dome to test scale models of daylighting designs, and received the Maryland Architecture Alumni Chapter Award and endowment. Various of his projects have been selected for design awards by the Homebuilder's Association of Maryland or been displayed at the University of Maryland School of Architecture Alumni Gallery Exhibit. ### Services Provided - Architectural Design - Building Design - Architectural Drawings - Custom Homes - House Plans - Home Additions - Kitchen Design - Bathroom Design - Universal Design - Drafting - Structural Engineering - Barn Design & Construction - Basement Design - Computer Modeling ### Areas Served - Columbia - Ellicott City - Catonsville - Randallstown - Owings Mills - Pikesville - Milford Mill - Eldersburg - West Elkridge - Reisterstown - Ilchester - Elkridge - Garrison - Sykesville - Trial - Lisbon - Anne Arundel County - Baltimore County - Carrol County - Clarksville - Cooksville - Dayton - Frederick County - Glenelg - Glenwood - Gwynn Oak - Howard County - Marriottsville - Montgomery County - Prince George's County - Simpsonville - Stevenson - West Friendship - Windsor Mill - Woodbine - Woodstock ## Business Details | Field | Value | | --- | --- | | Business Name | Ronald Johnston and Associates, Architects | | Address | 11407 Barley Field Way, Marriottsville, Maryland 21104, United States | | Phone | (410) 442-3667 | | Website | http://rjarchitect.com | | License Number | 10019 (MD) | | Followers on Houzz | 39 | ## Contact - **Houzz profile:** [Ronald Johnston and Associates, Architects](https://www.houzz.com/professionals/architects-and-building-designers/ronald-johnston-and-associates-architects-pfvwus-pf~1292278065) - **Website:** http://rjarchitect.com - **Phone:** (410) 442-3667 ## Credentials **Certifications & Awards** - Licensed in Maryland and Delaware. LEED AP. Recipient of various HBAM residential design awards. ## Reviews **Overall rating: 5.0 out of 5 — 5 reviews** ### All 5 reviews **★★★★★ — Boyce Renovations, Nov. 2018** > Ron is absolutely wonderful to do work with. I have known Ron for a good many years. It is easy to communicate ideas and thoughts with him. He understands the dynamic of a general contractor building from his print. He is always available to answer questions and is quick when revisions need to be made. I can't say enough good things about working with Ron. **★★★★★ — hendrixny9, March 2016** > Ron Johnston is the perfect professional to help you imagine, and then lay out in detail, the plans for your construction project. Some years ago, my wife and I decided to substantially expand the size of our home. We were referred to Ron by a friend in the home building industry. Ron worked closely with us, over the course of several afternoons, to come up with plans. When the plans were complete, he provided them to builders for estimates. And when the bank rejected the first design as too expensive, Ron went back to the drawing board with us and put the same time and effort into that process as he originally did to pare the project down to the right size while keeping it something to cherish. Needless to say, the addition was and is fabulous. It met all our needs and vision in a way both practical and elegant. It expanded our house by half again as much and turned it into a dream home. Ron is as excellent a construction partner as one could hope for and I can't recommend him and his professional skill highly enough. **Comment from Ronald Johnston and Associates, Architects:** > Thank you so much for your kind review. I thoroughly enjoyed working with you on your additions and alterations, and remember those meetings around your kitchen table every time I drive past your home. I agree - it really did transform your home - but if it weren't for both of your ideas and energy, it could not have happened. **★★★★★ — Diana, March 2016** > Ron worked with my husband and me on the restructuring of our house plans for our retirement home. We found him to be a competent architect with exemplary ethics. We appreciated immensely the invaluable expertise he provided us by aiding us in the details and decisions concerning the construction of our new home. He brought to light many ideas and options that we may not have otherwise considered. He listened to our thoughts and concerns and offered solutions. We are very thankful for the service he provided and recommend him highly. **Comment from Ronald Johnston and Associates, Architects:** > Thank you, Diana - I appreciated the opportunity to work with the two of you, and look forward to seeing the house once construction is completed! **★★★★★ — John Lynch, March 2016** > Ron was referred to us by our contractor, and we feel like he was the key to the success of our major renovation. We have an historic home, yet Ron listened to our thoughts to put forth a fabulous design to meet the needs of a busy family within the contours of the historic feel of the home and neighborhood. Our friends and family frequently comment on the beautiful space he designed. > > Ron also had superb yet practical ideas that made the project work. He is a true professional and we recommend him highly. **Comment from Ronald Johnston and Associates, Architects:** > Thank you for your kind words, John. Sometimes the projects with the most constraints are the most fun and rewarding, and I really appreciated both of your openness to ideas as well as strong sense of what you wanted to accomplish. These combined to drive what I also feel was a very successful project. I appreciate the opportunity to have worked with you on it! **★★★★★ — velamati, March 2016** > Ron Johnston worked with us over a 8 month design period and provided a fully custom solution that exceed our expectations. It was a very iterative process that required substantial study concepts, coordination with structural engineers and interior designers. We were also fortunate that Ron was well connected with builders and developers, which allowed us to fully execute on the plans. > > As a long standing commercial developer and builder myself, I was extremely satisfied with Ron's design and coordination skills. **Comment from Ronald Johnston and Associates, Architects:** > Thank you, Sri. It was certainly a pleasure to work with you, and also certainly a collaborative process - you brought a lot of great ideas as well as passion to the table, and I think the final results fully reflect that. ## Selected projects - [Two Story Contemporary](https://www.houzz.com/hznb/projects/two-story-contemporary-pj-vj~1599368) - Location: Washington, DC - Photos: 3 - [Federal Style Maryland Modern Home](https://www.houzz.com/hznb/projects/federal-style-maryland-modern-home-pj-vj~1590501) - Location: Ellicott City, MD - Photos: 15 - [Custom Home Exteriors](https://www.houzz.com/hznb/projects/custom-home-exteriors-pj-vj~680075) - Location: Not specified - Photos: 48 - [Contemporary Craftsman](https://www.houzz.com/hznb/projects/contemporary-craftsman-pj-vj~1593483) - Location: Clarksville, MD - Photos: 3 - [Interiors](https://www.houzz.com/hznb/projects/interiors-pj-vj~1590531) - Location: Ellicott City, MD - Photos: 16 [See all 5 projects](https://www.houzz.com/professionals/architects-and-building-designers/ronald-johnston-and-associates-architects-pfvwus-pf~1292278065) --- *Source: Houzz professional profile. Reflects the profile as of 2026-09-06.*