--- title: "Nathan Simpson Architect — Architects & Building Designers | Houzz" canonical_html_url: https://www.houzz.com/professionals/architects-and-building-designers/nathan-simpson-architect-pfvwus-pf~381587316 markdown_url: https://www.houzz.com/md/professionals/pf~381587316.md entity_type: LocalBusiness business_name: "Nathan Simpson Architect" category: ["Architects"] image: https://st.hzcdn.com/fimgs/e453bae4004fa6f8_1708-w400-h400-b0-p0--.jpg address: "Atascadero, California 93422, United States" phone: "(415) 843-1858" website: https://www.nathansimpsonarc.com rating: 5 review_count: 5 best_of_houzz_awards: 2 followers: 5 last_updated: 2026-08-17 --- # Nathan Simpson Architect Original Houzz profile: [Nathan Simpson Architect](https://www.houzz.com/professionals/architects-and-building-designers/nathan-simpson-architect-pfvwus-pf~381587316) ## Professional summary - **Primary category:** Architects - **Location:** Atascadero, CA - **Serves:** San Francisco, San Luis Obispo, Atascadero, Garden Farms - **Houzz rating:** 5.0 out of 5 (5 reviews) - **Best of Houzz:** 2 awards (2024–2025), for Service. ## About ### Houzz Badges - Recommended on Houzz - 10 Ideabook Saves - Locally owned - Online consultation - Offers Custom Work Providing exceptional Architectural services throughout the Central Coast of California, Nathan is laser focused on his clients wants and needs. He truly always wants more than a thrilled reaction from them and delivers every time. Taking a more personalized and intuitive approach, Nathan is able to learn about his clients lifestyle, needs, and wants, helping him to create ideal space. Nathan is about quality all the way and is looking forward to working with you on your next project. The sky is the limit and there is no job too big or too small. ### Services Provided - Architectural Design - Building Design - Home Remodeling - Architectural Drawings - House Plans - New Home Construction - Home Additions - Kitchen Design - Sustainable Design - Kitchen Remodeling - Floor Plans - Energy-Efficient Homes - Bathroom Design - Guesthouse Design & Construction - Outdoor Kitchen Design - Staircase Design - Custom Home ### Areas Served - San Francisco - San Luis Obispo - Atascadero - Garden Farms ## Business Details | Field | Value | | --- | --- | | Business Name | Nathan Simpson Architect | | Address | Atascadero, California 93422, United States | | Phone | (415) 843-1858 | | Website | https://www.nathansimpsonarc.com | | Followers on Houzz | 5 | ## Contact - **Houzz profile:** [Nathan Simpson Architect](https://www.houzz.com/professionals/architects-and-building-designers/nathan-simpson-architect-pfvwus-pf~381587316) - **Website:** https://www.nathansimpsonarc.com - **Phone:** (415) 843-1858 ## Credentials - **Best of Houzz:** 2 awards (2024–2025), for Service. ## Reviews **Overall rating: 5.0 out of 5 — 5 reviews** *Aspect averages:* - Work Quality: 50.0 - Communication: 50.0 - Value: 50.0 ### All 5 reviews **★★★★★ — Craig Dierling, Jan. 2024** > Nathan did a great job as the architect for our home kitchen remodel/addition project. He listened and understood our goals and specific preferences, communicated clearly and promptly, coordinated to help us decide on key features, and also coordinated to engage a structural engineer seamlessly within his design process. Nathan met with our building contractor during his design and confirmed his ideas for major structural changes were readily constructable. He prepared high quality plans quickly and guided them through county planning and building permit reviews, keeping us updated regularly on the status until permits were ready to issue. Nathan worked efficiently and at low cost, so the total of his fees were a very small percentage of our project cost. > > We were very happy with Nathan's services and would definitely hire him again. **★★★★★ — Dr. Guillermo C. Garcia Ph.D., April 2023** > Nathan Simson was the architect who worked on the plans for converting a storage/garage into Accessory Dwelling Unit (ADU). > > He was professional and accessible. Nathan worked well with the Long Beach City (where I live) Development services to obtain approval for the plans in a reasonable time frame. > > He came highly recommended by close friends in his area who were his clients. > > I am incredibly thankful that he was with me every step of the way during the planning, construction, and inspection phases. > > Nathan visited the site in Long Beach and afterward presented me with various options, which we then discussed. > > His advice and referrals were beneficial. His fees were super-reasonable and kept me within budget. > > I highly recommend Nathan to anyone planning an ADU, a new home construction, or an addition to a building. **★★★★★ — BJ Gray, April 2023** > Nathan has a beautiful, relevant aesthetic to his work. He is not only an excellent architect who takes every detail into account but he is an easy person to communicate with, ideate with, and leaves his ego at the door. I loved working with him and brainstorming on materials, and options for design. I trusted him throughout the whole process and highly recommend working with him! You won't go wrong. **★★★★★ — Bill K, April 2023** > Nathan Simpson was the architect of record on a ground up, multi-million-dollar home in the town of Sonoma. Nathan is incredibly experienced and professional, but it was his design innovation and attention to lifestyle details that allowed me and my partners to deliver an exceptional residence of beauty and the highest quality that sold before even hitting the market! > > He is so amazing to work with that I’m now using him on the remodel of my personal residence. **★★★★★ — mkalff, April 2023** > We purchased and older home in Sonoma Valley a few years ago and immediately turned to Nathan for his creativity, thoughtful design, and collaborative work style. We had to quickly get the house in shape for move-in and Nathan LISTENED to what we wanted short term and what our potential vision was for the longer term. He then provided the design changes and permit/construction drawings we needed. > > Now, a few years later, we are ready to bring the long-term vision to life and Nathan is at the helm of that effort, guiding us through the design options with his amazing taste, talent, and experience. > > I recommend Nathan Simpson for any architectural needs, but specifically for residential. ## Selected projects - [Sonoma](https://www.houzz.com/hznb/projects/sonoma-pj-vj~6562496) - Location: Sonoma, CA - Photos: 10 - Description: This single family residence was remodeled from top to bottom, reimagined as a compound for family and friends to relax indoors and out, lounge poolside or tend to the hobby vineyard. Visitors approach the property through new landscaping and enter the great room at a 12' wide glass door with views straight through the home to the rear yard and pool. A new clerestory window showers the shared kitchen living space in natural light and adds height to the otherwise low, flat architecture of the exi… - [Union Square](https://www.houzz.com/hznb/projects/union-square-pj-vj~6560568) - Location: San Francisco, CA - Photos: 16 - Description: This historic penthouse was reconfigured to create a shared kitchen and living space and to add a master bedroom with ensuite. The two existing bedrooms are connected with a new jack & jill bathroom. The existing spiral staircase is now a framed focal point, leading up to a reimagined roof deck. Custom kitchen cabinets anchor the Wolf and Sub Zero appliances. The original red oak floors were uncovered and refinished throughout the unit and new door trims and baseboards were added in the classic… - [Russian Hill](https://www.houzz.com/hznb/projects/russian-hill-pj-vj~7020830) - Location: San Francisco, CA - Photos: 20 - Description: This historic penthouse apartment was reimagined as a peaceful sanctuary high above the hustle and bustle of the San Francisco streets below. The relaxed material palette allows the stunning city views to take center stage. Throughout the home we used warm, neutral materials that are rich in texture and sheen. The kitchen was opened to the dining area with a new bar allowing for better light and views in and out of the space. Warm wood cabinets and tile floors anchor the stainless Monogram appli… - [Lower Nob Hill](https://www.houzz.com/hznb/projects/lower-nob-hill-pj-vj~6562502) - Location: San Francisco, CA - Photos: 9 - Description: The floorpan of this 2 bedroom apartment was reconfigured to create a unified kitchen and living space that takes advantage of natural light from the bay window. Steel structural supports, uncovered during demo, became the anchor for an acrylic bar. The brick wall, also uncovered during demo, became a focal point of the living area. Wall-washing LED lights graze the rough texture of the brick. Custom cabinets were installed in bedrooms in lieu of traditional closets to save space. - [Civic Center](https://www.houzz.com/hznb/projects/civic-center-pj-vj~6562499) - Location: San Francisco, CA - Photos: 10 - Description: This studio apartment was reconfigured to create a semi-private sleeping nook. Compact, european appliances provide efficient storage space in the kitchen. Wall-washing LED’s graze the exposed concrete walls. Custom cabinets under the living room window provide a seat as well as additional storage. The existing oak strip floor was refinished in a lighter stain. - [Nob Hill](https://www.houzz.com/hznb/projects/nob-hill-pj-vj~6562492) - Location: San Francisco, CA - Photos: 11 - Description: This one bedroom apartment was reimagined as a two bedroom unit, using space-saving design decisions to make the most of the small footprint. The shared kitchen and living space was moved to the front of the unit to take advantage of natural light from the bay window. The kitchen features a floating quartz peninsula held by a custom-fabricated steel frame. This provides additional counter space without sacrificing the open feel of the space. Instead of traditional closets in the bedrooms I used… - [Pacific Heights](https://www.houzz.com/hznb/projects/pacific-heights-pj-vj~6562510) - Location: San Francisco, CA - Photos: 7 - Description: This generous seventh floor studio apartment is reconfigured into a one bedroom unit with a shared kitchen and living area. Space-saving features like pocket doors and compact, european appliances keep the space feeling open. Clean lines and contemporary finishes provide a muted backdrop for the sweeping city views. - [Panhandle Patio](https://www.houzz.com/hznb/projects/panhandle-patio-pj-vj~6562522) - Location: San Francisco, CA - Photos: 10 - Description: The redwood partitions were built to separate the ground level dwellings from the rear yard which is accessible to other tenants in this multi-family building. The folding gate can be left open for a view of the rear yard or closed and locked for privacy. [See all 8 projects](https://www.houzz.com/professionals/architects-and-building-designers/nathan-simpson-architect-pfvwus-pf~381587316) ## Ideabooks - [Wish List](https://www.houzz.com/ideabooks/147191116/list/wish-list) — 1 idea [See all 1 ideabook](https://www.houzz.com/ideabooks/users/webuser-234596581) --- *Source: Houzz professional profile. Reflects the profile as of 2026-08-17.*