Mount Vernon View
  Lakefront Home
  Corner Courtyard Residence
  Hawk's Nest
  Modern Retreat in a Rural Hamlet
  Brookmont Home
  A House with a View
  A Stately Home
  Tulip Hills Residence
  House on the Pond
  High Gate
  Annapolis Historic Home
  Bright and Airy Kitchen & Family Room
  Royal Oak Renovation
  Mid-Century Makeover
  Addition to Historic Home
  Grand Dame of Chevy Chase
  Waterfront Kitchen
  Colorful Four Square
  Riverside Retreat
  Greenwich Village Loft
  Penthouse with a Feature Stair
  Penthouse with a View
  Bethesda Penthouse
  The Maisonette, Fifth Avenue, New York City
  Waterfront Farm Main House
  Waterfront Farm
  Highland Farm
  Pleasant Prospect Farm
  Hillside Homes
  Noyes Children's Library
  Project Design Models
5272 River Rd, Ste 610
Bethesda MD 20814


"We selected Wiedemann Architects for their ability to design beautiful homes under challenging situations. The property is situated on the banks of the Potomac with federally-protected trees, wildlife, and views of Mt. Vernon. During the design phase, Greg and Felix were excellent listeners and understood our family's vision. As a "family gathering place" and future retirement home, we wanted a house built for longevity -- one our family could enjoy for generations. Given the property's unique location, it was important to have a home that was historically relevant yet also provided the modern amenities one would expect in today's world. Greg and Felix turned our vision into a beautiful modern farmhouse that blends with the natural environment and offers panoramic views from almost every room. They worked with numerous stakeholders, on our behalf, to ensure approval at all levels of government. We couldn't be more happy with our special family retreat! Thank you Wiedemann Team!"

"We couldn't have been happier with our team from Wiedemann Architects! We would highly recommend Wiedemann for any architectural project you may be considering.  We worked directly with Greg and Gaby throughout the project and they where there from day 1 through completion to help answer all of our questions and come up with solutions that were perfect for us! The entire Wiedemann team was professional, knowledgeable, while delivering the highest-quality plans, project scope & details, along with a timeline and budget that kept us on track with our project goals. The attention to detail was stellar and the final result was exactly what we were looking for! If you're a perfectionist, this is the right team to work with! At times, I'm sure I wasn't easy to work with - but Greg and Gaby were very patient with us as we evaluated all of our options and they helped guide us down the right path to a beautiful new kitchen and family room addition.  We couldn't give a HIGHER level of recommendation!" - Spring 2020

"We had seen a project in our area that Wiedemann had done and liked it. We met with Greg (as well as two other firms) and we both agreed that he was the one to work with. He and his associate, Gaby, immediately picked up on our goals and style and were flexible when we threw them curveballs. They brought great ideas to the discussion, were always enjoyable to work with, stayed on top of the project and the builder, and generally made it a fun experience. We are thrilled with the outcome. We loved their low-key but professional approach, their eye for detail and their follow through. We recommend Wiedemann Architects whole heartily." Early Spring 2020

"We've been living in our new house for a little more than a year now, and we love it more every day. This was our second time working with Greg: previously, we renovated and expanded a 1920s Sears Craftsman. That was a fun and rewarding experience, and the result was great, so, of course, we turned to Wiedemann Architects again when we decided in 2016 to build a new house. Only this time we wanted something very modern--lots of glass and sunlight, open floor plan, living space and master suite together on one floor. Greg and his associates, Felix Gonzalez and Lindsay Field, worked diligently to translate what we wanted into something that in every way makes living here really special. In addition to the Wiedemann team, we also engaged McNamara Brothers, Inc. as our general contractor and Lila Fendrick Landscape Architects as our landscape architects. Both were highly recommended by Greg, and both did an outstanding job.Early Spring 2020

"When we began to look for an architect to work on our 1914 Royal Oak farmhouse, McNamara Builders recommended Greg Weidemann -Weidemann Architects From our first meeting, Greg listened carefully to our vision for our home. Greg and Andrew Dan designed a beautiful plan – addressing every detail of our home with great patience and care. Greg and Andrew skillfully combined original portions of the home with new - creating a “new/old” home that is better than we could have imagined. Old homes offer plenty of surprises during renovation but Greg handled all issues quickly and professionally. Weidemann Architects provided an efficient, thoughtful and client-focused process from planning through project completion. We thoroughly enjoyed working with Weidemann Architects and offer our highest recommendation." Fall 2018

"Wiedemann Architects has done numerous projects for us over the course of 18 years including our home in VA and our vacation home in WV. We could not have been more pleased with every aspect of the projects. Wiedemann Architects listened to our needs and desires and turned them into more than we could have dreamed of. The quality of their work coupled with their professionalism continues to draw us back to them when the need arises. 5 stars is just not enough!" Winter 2017

"We hired Wiedemann Architects to oversee the total renovation of a mid-century modern house in Mohican Hills, Maryland. Our 1950s house is situated on a hilly, wooded lot overlooking an old pool. The design objective was a modern house that was mostly glass in the back to take advantage of the lot, yet one that retained its original façade on the front. While the project had plenty of challenges, Greg and his team (Mitch Prince and Lindsay Field) did an exceptional job. The final project is a light filled modern space with an open staircase leading to a lower level with a poured concrete floor. Greg had really good insights and suggestions about the space, and he was flexible and willing to listen to our input. Greg also led the selection of our contractor, McNamara Brothers. Greg and the McNamaras worked very well together, and the project was delivered on budget and ahead of schedule. We are extremely pleased with the results. We would be happy to recommend Greg and Wiedemann Architects for any project, regardless of size and complexity."  Spring 2017

"We wanted to make several changes in our recently purchased, high-end condo in downtown Bethesda. We asked around and interviewed several architects, and ultimately hired Wiedeman Architects LLC. Our project grew in size and scope, as most projects do, and took several months to complete. Greg worked to re-create a relatively dark and asymmetrical space into an amazing contemporary space with clean lines, lots of light and glass and enough wood to make it warm and inviting. The master piece is the floating glass staircase! Greg was more than open to the idea and took to it with a passion; the result is amazing. Greg has great vision and patience, he was a pleasure to work with. Lindsay Field, Greg's assistant architect was absolutely great to work with as well; she has an enormous eye for detail and she worked with us as we decided on furniture sizes and placement, fixtures etc. We did not use a designer, and, because of the support of Greg and Lindsey, never really needed one. Finally, the administrative part was so easy: Greg would approve the builder's invoices and approve the charges, and send it on to us for payment, and the Wiedemann invoices were detailed and organized. In summary, our project was challenging and complex on many levels, and could have been a headache for us, but, in great part because of the Wiedemann Architects Team, it was a great experience with amazing results that we are very happy with!"  Early 2017

"Greg designed a portico for the front of our house. It is perfect and is so much more in keeping with the rest of the house. He and his staff were easy to work with, and provided excellent answers when we and the builders raised questions. But, Greg and his staff had provided us with detailed and appropriate design details that made the total redesign of our kitchen (after 25 years) even better than we anticiapted." Winter 2016

"Greg and Felix really transformed our home with a spectacular addition -- family room with bar, screened in porch, mud room, powder room, outdoor hardscaping. We especially appreciated their attention to small details and to a tasteful integration/replication of the existing architectural elements of our 1913 home. They listened carefully to our project goals and vision. They accommodated our busy schedules by meeting at early hours at our house. We love the result and are happy we chose real professionals for an admittedly challenging project." Late Fall 2016

"We used Wiedemann Architects for a full scale home renovation. We live in a 1930s Cape Cod home. Greg and his team did an amazing job of drawing up a renovation plan that expanded the home for modern style living while still keeping the old home charm and blending old with new. We could not be happier with our experience with Wiedemann Architects and will be using them again for a smaller laundry room addition in the future." Fall 2016

"We hired this firm in 2015 to design substantial renovations for a Bethesda, MD penthouse. The big picture plan was great, exceeded only by their attention to detail--amazing working drawings. They were terrific to work with, incorporating our ideas into the plan where appropriate and gently suggesting improvements.. We would highly recommend Wiedemann Architects." Winter 2016

"The best decision we made when we decided to update and expand our 1920s Sears house was hiring Wiedemann Architects. We spent a lot time talking through our objectives with Greg in the early stages of our project. Greg proved to be not only a good listener, but also a wise advisor, with plenty of great ideas of his own. With the able assistance of his associate Lindsay Field, Greg developed a plan that beautifully harmonized old and new. Greg did a superb job of overseeing the project, making sure that everything was done right. (At Greg's suggestion, we hired McNamara Brothers as our general contractor. He and they have a long history of working together on projects such as ours, and their work was outstanding.) When the project was completed and we moved back into our home, I remember telling Gregg, "everywhere I look, I see something beautiful." That was six years ago, and I still feel the same way today." Spring 2016

"Greg Wiedemann and his associate, Felix Gonzalez, designed a house that met the challenging requirements for this project. The house was to have a modern sensibility yet meet the architectural requirements for this conventional community. And it was sited on a steeply sloped lot. The end result is both beautiful and functional. Just today, someone walked in and exclaimed, "this is a never leave sort of place." That's exactly what it is. The house does everything I wanted it to do. Greg and Felix listened to everything I had to say with regard to practicalities and design and were accommodating without sacrificing integrity in form or function. This is the second house I've built with an architect and my experience is that it's unusual to find an architect that is both so flexible and talented. I highly recommend this firm." Fall 2016

"I cannot recommend highly enough the firm of Wiedemann Architects for the creativity, skill, ability to bring a project to fruition, ease of working together, and general professionalism of its principal, Greg Wiedemann, and project architect, Barbara Sweeney. What impressed me enormously was the ability of the architects to take an idea, a feeling really, and convert the idea and the feelings to something material, and just exactly what I wanted. The flexible way in which this firm works is also remarkable.I participated in the project by Skype while I was in France and the project was in West Virginia, with only short visits by me to the site. The architects worked well with the contractor and with all the professions necessary to get the house built. A challenging site provided lots of surprises but determination and a real desire to create something unique served to make the house/atelier beautiful, functional, and a joy to live and work in." Early 2016

"Wiedemann Architects is a superb group of professionals. They are precise, thoughtful, imaginative and creative. They listened carefully to understand what we wanted and delivered more than we expected. I am a real estate developer and I have never seen plans that are better than Wiedemann's." Late 2015

 “Wiedemann Architects designed an addition to my 1911 vintage house…..I couldn't be happier with what they accomplished. Their architectural design was in keeping with the style of the original building, inside and outside. …The addition is in scale with the house from front and back street views, and it blends seamlessly with the existing structure…. [They] were involved, available, professional, and easy to work with at every stage of the project. I had complete confidence in them. They provided the architectural expertise needed for a successful project, and they made sure that their design was realized, down to the details. I recommend Wiedemann Architects highly and without reservation.” Fall 2015


“Before embarking on a large residential new build project, my wife and I determined that the hiring of the architect was one of the most important decisions we would make. The architect would not only be key in the design of our new house, but would assist us in selecting a builder and represent our interests during the construction phase. Commensurate with the importance of the decision, we interviewed six architects, checked provided references, and spoke to builders who had worked with the architects. After that vetting process, we selected Greg Wiedemann for the project. We thought highly of Greg's aesthetic, appreciated the depth of his technical knowledge, welcomed his thoughtful approach to questions presented, and anticipated that he would represent our interests well during the construction phase.  Looking back on the project, we often tell people that the best decision we made over the course of the several-year project was the hiring of Greg Wiedemann. He designed a beautiful house for us on a challenging lot, paying attention to the very smallest detail, while absorbing our own aesthetic to the point where down the road we felt very comfortable with his recommended choices for tiling, light fixtures, etc., and was all that we could have hoped for in terms of being an owner's advocate during the construction phase, including by ensuring that the design as called for was realized in all its specifics.  We are thrilled with the final results of our project, and are grateful for all that Greg did to make it a reality.”  Fall 2014

“I hired Wiedemann Architects to design a small house that has abundant natural light. …Where design elements might have exceeded the agreed-upon budget, Greg Wiedemann came up with innovative solutions that didn't compromise the overall design. Greg was very respectful of my point of view, is a good listener, and regularly sought my feedback. Besides being a gifted designer, Greg is very detail oriented and thoroughly understands the mechanical and engineering underpinnings of all of his projects. I highly recommend him and his talented staff.” Fall 2014

 “There is something uniquely majestic and tranquil about our home.  The flow through the space is balanced and refreshing. The center room, with its columns, natural windows and sumptuous open kitchen is breathtaking. The discreet pocket doors allow numerous permutations of functionality and privacy, even allowing for more formality when needed. The children's rooms have fantastic layout and energy. In short, the new loft you designed is the most graceful and comfortable apartment I've seen in New York.  We are fortunate to call it home.”  

“ Greg Wiedemann and his group did a fantastic job designing my traditional cherry library and supervising every detail of its construction. They listened carefully to all my ideas and implemented everything that was feasible, patiently explaining the things that were not. Waterproofing, insulation, heating and cooling were all exquisitely designed and implemented so that the room is the most comfortable in the house year-round, even when the power goes out. They are a bit pricey and hit the cap on their fees well before the end of the project, but to the finish and beyond they remained as committed and involved as at our very first meeting. They were a joy to work with and I recommend them without hesitation.” Fall 2014

“Our experience with Wiedemann Architects was wonderful from beginning to end. From our first meeting, we knew that Greg Wiedemann understood our needs and our aesthetic, and his work for us exceeded our expectations. Greg's design allowed us to expand and update our 1930s colonial without sacrificing any of its character. He was able to open up the home to the outdoors (despite the challenging placement of the house on an irregularly shaped lot) and improve the flow of the rooms for our family. Greg was involved at every stage of the design and construction process, and his eye for detail ensured the highest level of quality. [Wiedemann Architects] also helped us select many finishes, light fixtures, and exterior features that perfectly suited our home and our style. On a personal level, [they] were a pleasure to work with--attentive, considerate, and thoughtful throughout the project. We are thrilled with our home and give Wiedemann Architects the highest possible recommendation.” Fall 2014

“The big room is beautiful. It is grand and homey at once. Fine but strong and practical. There is not another physical space I would rather be to live with my family during these times. This room welcomes us, feeds us, entertains us, gives us all privacy while keeps us together.”

 “I have been advised by [the Contractor] that our future home is unlike any other and the care, dedication, and artistry you have exhibited is not something they have ever had the privilege to work with before.”

 “Your dedication to the project, expertise on a number of issues, and most importantly ability to design beautiful elements and take your vision through to the finished result has resulted in a wondrous final project. We knew all along that we would be safe in your hands.” 

“I was extremely pleased with the outcome of Wiedemann Architects’ work.  The whole process took two years between initial planning and completion and during this time the firm’s principal and [project architect] were always available to both myself and out builders to answer questions.  The firm found the builders who turned out to be just wonderful. Everyone they brought on the job were first-rate.  Procedures and cost were communicated clearly. This was important as we have never taken on a task like this.  It was a good partnership.”

 “The home shows your masterwork at every turn. It is uniquely light and airy yet solid at the same time. There is a peaceful quiet here that is always accompanied by the sense that this is built like a fortress. The house with all these windows is ever changing - shading itself and it’s the most natural rhythm to a physical space I have ever experienced.  I mean it. This house feels like a living structure - like it has its own energy.”


As an architectural photographer, I have known and worked with Greg Wiedemann for over 20 years, photographing his finished projects for marketing and award submissions. Each project is executed with such incredible design sense and knowledge of proportion, that it is a joy to create photographs of these residences. I highly recommend Wiedemann Architects - everyone I know who has hired this firm always has had great things to say - very complimentary. - Anice Hoachlander, Hoachlander Davis Photography

As general contractors in the Washington area, we have worked with Greg Wiedemann and his staff at Wiedemann Architects for well over twenty years. Greg’s easy, graceful style, his disciplined attention to every detail, and his persistence in the construction phase of the project all combine to make a consistently excellent product. Being the GC on his team is an uplifting experience, where professionalism and the highest standards are the predictable result of the process. We would recommend Wiedemann Architects to the discerning homeowner without reservation. - Carl Petty Associates

[We have] worked with Wiedemann Architect’s on several projects. Their plans have consistently been detailed and accurate. When you are working with a quality team the project runs smoothly. Greg Wiedemann and Lindsey Field always made themselves available to the owner and subcontractors. They are true professionals."  - Alliance Builders

“Wiedemann Architects was thorough in their detail, creative in their design and completely responsive throughout the construction process. [We] found Wiedemann Architects’ plans easy to bid and execute for the homeowner. Wiedemann Architects LLC is a pleasure to work with!”. - O'Neill Development.

“We have worked with Wiedemann Architects LLC for over twenty years.  Our experience has been 100% positive.  We have worked on major projects which have been published in major publications, received local and national recognition, [including] American Institute of Architects’ awards”. - Robert McNamara, McNamara Builders, Inc.