---
title: "RGArchitecture — Architects & Building Designers | Houzz"
canonical_html_url: https://www.houzz.com/professionals/architects-and-building-designers/rgarchitecture-pfvwus-pf~504593140
markdown_url: https://www.houzz.com/md/professionals/pf~504593140.md
entity_type: LocalBusiness
business_name: RGArchitecture
category: ["Architects"]
image: https://st.hzcdn.com/fimgs/e423fb5404898389_3538-w400-h400-b0-p0--.jpg
address: "St. Helena, California 94574, United States"
latitude: 38.5138
longitude: -122.4619
phone: "(707) 963-7650"
website: http://www.rgarchitecture.com
rating: 5
review_count: 5
best_of_houzz_awards: 2
followers: 76
last_updated: 2026-11-08
---

# RGArchitecture

Original Houzz profile: [RGArchitecture](https://www.houzz.com/professionals/architects-and-building-designers/rgarchitecture-pfvwus-pf~504593140)

## Professional summary

- **Primary category:** Architects
- **Location:** St. Helena, CA
- **Serves:** Santa Rosa, Napa, Saint Helena, Calistoga, Yountville, Angwin, Kenwood, Deer Park, Rutherford, Bay Area, Oakville, Pope Valley
- **Houzz rating:** 5.0 out of 5 (5 reviews)
- **Best of Houzz:** 2 awards (2017–2018), for Service.

## About

### Houzz Badges

- Star Houzzer
- Houzz Influencer
- Recommended on Houzz
- 1,000 Ideabook Saves

Design for the Modern Age

Owner/Architect, Robert R. Gregory, has been working independently in the Napa Valley for over 30 years and you can find examples of his work throughout the region. He can be reached at robert@rgarchitecture.com or Tel (707)963-7650 
Cell (707) 480-4396

He has worked on a wide variety of projects, from small to large homes. He is known for working closely with his clients throughout projects including construction to help clients to realize their dreams.
Robert's passion for architecture leans towards a high level of craft and a style which he refers to as "rustic modern". He enjoys designing modern forms with minimalist aesthetic, while maintaining the comfortable, livable, and practical qualities of a traditional home that bring warmth and character.

### Services Provided

- Architectural Design
- Building Design
- Home Remodeling
- Architectural Drawings
- Custom Homes
- House Plans
- New Home Construction
- Home Additions
- Home Extensions
- Sustainable Design
- Kitchen Design
- Kitchen Remodeling
- Floor Plans
- 3D Rendering
- Accessory Dwelling Units (ADUs)
- Bathroom Design
- Guesthouse Design & Construction
- Universal Design
- Home Restoration
- Outdoor Kitchen Design
- Barn Design & Construction
- Basement Design
- Attic Conversion
- Staircase Design
- Landscape Plans
- 3D Home Design
- New Residences

### Areas Served

- Santa Rosa
- Napa
- Saint Helena
- Calistoga
- Yountville
- Angwin
- Kenwood
- Deer Park
- Rutherford
- Bay Area
- Oakville
- Pope Valley

### Typical Job Cost

The not to exceed projected cost within reasonable limits related to each project is
taken seriously and along with a contractor on board during planning helps to facilitate that goal.

## Business Details

| Field | Value |
| --- | --- |
| Business Name | RGArchitecture |
| Address | St. Helena, California 94574, United States |
| Phone | (707) 963-7650 |
| Website | http://www.rgarchitecture.com |
| License Number | C9870 |
| Followers on Houzz | 76 |

## Contact

- **Houzz profile:** [RGArchitecture](https://www.houzz.com/professionals/architects-and-building-designers/rgarchitecture-pfvwus-pf~504593140)
- **Website:** http://www.rgarchitecture.com
- **Phone:** (707) 963-7650

## Credentials

**Certifications & Awards**
- Robert Gregory is a licensed architect in the State of California.

- **Best of Houzz:** 2 awards (2017–2018), for Service.

## Reviews

**Overall rating: 5.0 out of 5 — 5 reviews**

### All 5 reviews

**★★★★★ — TOTAL CONCEPTS, May 2017**

> Robert Gregory has been a colleague of Total Concepts in the building industry for the past 21 years. As a person and a professional he is exemplary. He is indeed a skilled craftsman in creative and intuitive design. He is an easy collaborator and eagerly receives input from clients and other professional alike. It is always a pleasure to work with Robert.

**★★★★★ — Lawrence Fairchild, May 2017**

> Robert Gregory is one of the most talented and creative architects for cutting edge modern design concepts, open space - spectacular visual design, with extreme attention to detail, including layout, lighting, and art enhanced design. Truly a talent not to be overlooked for the NEXT level of modern architecture & design.

**★★★★★ — Diana Hartford, May 2017**

> Robert is an incredibly talented architect. His ability to take your vision and enhance it in ways you never thought possible is rare and exceptional. He is passionate about the details, and it's those little details that take design from good to great. Even more important, Robert is a collaborator. If you want to add or change something, he makes it work and typically builds on the idea to make it enhance the space while maintaining functionality. The reaction I've had to the finished project is overwhelmingly positive. The home integrates indoor and outdoor spaces, creating wonderful areas for gatherings and connection while optimizibg the view of the vineyards surrounding the property. I would definitely recommend Robert!

**★★★★★ — User, July 2016**

> We are working on a very complex project that includes a complete gut job of our flat and a new façade for our 106 year old Victorian. Bob did an outstanding job of listening to our goals and came up with a very creative floor plan to meet our needs. He is the consummate professional in that he is courteous, thoughtful, and consistently met tough deadlines. Plus he is a pleasure to work with. I couldn't recommend him enough.

**★★★★★ — kencco, July 2016**

> I hired RGA for a guest house in Montana \[on this site\].  They did a fabulous job turning my tear-sheet ideas into a beautiful structure.  I am now \[7/16\] working with them in creating the main house.  It is going to be extraordinary.  RGA creativity is matched by their attention to detail and responsiveness to the many small but important issues that arise during the building process.

## Selected projects

- [RESIDENCE ON CONN CREEK](https://www.houzz.com/hznb/projects/residence-on-conn-creek-pj-vj~1875072)
  - Location: Saint Helena, CA
  - Photos: 13
  - Description: This residence in the Napa Valley is contemporary and yet has rustic contrasting wood throughout the residence to give it a more "Rustic Modern" look. Along with the corrugated steel awnings, this design direction is a way to integrate a modern residence into an agricultural design influenced area.
- [GUESTHOUSE at CONN CREEK](https://www.houzz.com/hznb/projects/guesthouse-at-conn-creek-pj-vj~1064053)
  - Location: Not specified
  - Photos: 10
  - Description: This gorgeous little gem of a guesthouse overlooks the Rutherford Bench area of the Napa Valley. Complete with a small studio and lots of outdoor living, this tiny house might be all you need.
- [ZINFANDEL LANE](https://www.houzz.com/hznb/projects/zinfandel-lane-pj-vj~1847993)
  - Location: Angwin, CA
  - Photos: 15
  - Description: A stone walled residence in the Napa Valley sits in the middle of a vineyard and olive orchard. A "Rustic Modern" design built of locally sourced stone. The design is of simplistic shapes of one material that in their composition of four buildings, creates the intrigue.
- [BIG SKY GUESTHOUSE](https://www.houzz.com/hznb/projects/big-sky-guesthouse-pj-vj~1064425)
  - Location: Not specified
  - Photos: 9
  - Description: This guesthouse is the first phase of a bigger project which is under construction, designed to take advantage of wide open spaces and big open sky.
- [R+D UNDERGROUND](https://www.houzz.com/hznb/projects/r-d-underground-pj-vj~1048304)
  - Location: Not specified
  - Photos: 10
- [VILLA TEMU PANDANG in BALI, INDONESIA](https://www.houzz.com/hznb/projects/villa-temu-pandang-in-bali-indonesia-pj-vj~1064201)
  - Location: Not specified
  - Photos: 7
  - Description: Tucked away in the rice fields of Canggu, Bali is this little gem of a villa. Robert Gregory and his wife, Ade, built this villa as a hideaway from the hustle-bustle of the tourist areas.
- [FRANZ VALLEY RESIDENCE](https://www.houzz.com/hznb/projects/franz-valley-residence-pj-vj~1061984)
  - Location: Not specified
  - Photos: 8
  - Description: As an agricultural building inspiration this residence was designed as a "Second Unit" as defined by the county as an 840 max. sq.ft. residence with a kitchen and a "Guesthouse" which is 640 sq. ft. max without a kitchen. The two buildings in composition make up a creative solution to a residence without building the future main residence. One is inspired to be a wood barn look and the other, the master bedroom/library is a stone cottage look.
- [BIG SKY RESIDENCE](https://www.houzz.com/hznb/projects/big-sky-residence-pj-vj~2591154)
  - Location: Not specified
  - Photos: 2
- [R&D HOUSE](https://www.houzz.com/hznb/projects/randd-house-pj-vj~1961479)
  - Location: Not specified
  - Photos: 11
  - Description: This residence on a small parcel is Richard Gregory's first house. He designed, did the interior design, built it acting as the Contractor, & photographed it. It is meant to be a contemporary agricultural vernacular. The skill that went into the ability to master this interior design came from a history that began as an 8 y.o. working in his dad's office thru graduating from an architectural university and on the job training until he was 32 y.o.
- [NORTH CRYSTAL SPRINGS ROAD](https://www.houzz.com/hznb/projects/north-crystal-springs-road-pj-vj~1960842)
  - Location: Saint Helena, CA
  - Photos: 14
- [STEEL FOUNTAINS](https://www.houzz.com/hznb/projects/steel-fountains-pj-vj~1875308)
  - Location: Angwin, CA
  - Photos: 6
  - Description: These fountains were designed by RGArchitecture and are available to the public by leaving an email. robert@rgarchitecture.com
- [DRY CREEK ROAD](https://www.houzz.com/hznb/projects/dry-creek-road-pj-vj~2703893)
  - Location: Napa, CA
  - Photos: 12

[See all 12 projects](https://www.houzz.com/professionals/architects-and-building-designers/rgarchitecture-pfvwus-pf~504593140)

## Ideabooks

- [Steel Windows & Doors](https://www.houzz.com/ideabooks/96592097/list/steel-windows-doors) — 2 ideas
- [Duprey Residence](https://www.houzz.com/ideabooks/108814710/list/duprey-residence) — 3 ideas
- [Steel Shelves, Cabinets, Fireplaces](https://www.houzz.com/ideabooks/95091040/list/steel-shelves-cabinets-fireplaces) — 1 idea
- [Partitions Between Spaces](https://www.houzz.com/ideabooks/93259004/list/partitions-between-spaces) — 1 idea
- [OUTDOOR BUILDINGS](https://www.houzz.com/ideabooks/92829478/list/outdoor-buildings) — 2 ideas
- [Duprey Residence Colors](https://www.houzz.com/ideabooks/92055428/list/duprey-residence-colors) — 9 ideas

[See all 6 ideabooks](https://www.houzz.com/ideabooks/users/rgarchitecturenapavalley)

## Community Q&A

**Q: outside material** *(in Photo Questions)*

Love this guest house! Wondering what the exterior material is?

A: The exterior is a standard stucco finish with a cement color.

**Q: Doors and Windows -** *(in Photo Questions)*

I love these doors and windows! Can you tell me more about them? Are they steel-framed? Who is the manufacturer? Thanks!

A: Hello, thanks for the inquiry about the steel doors and windows. They are "Torrance" brand. I would love to use steel windows more often because they are very fitting with the industrial look. There are a number of steel window and door companies and can be found on the internet. The overall cost is generally twice other products.

**Q: Range hood** *(in Photo Questions)*

Is the range hood custom? Can you share the source? Thanks.

A: The range hood was custom designed by myself. We wrapped a range hood insert.

**Q: Wall paint color** *(in Photo Questions)*

Hello, would you mind sharing the paint color that was used on the interior walls?  Thank you in advance!

A: Hello Jill, I'm sorry I don't know. The Interior Designer is Ohlen Designs in SF. We used quite a lot of steel so I imagine a slightly greyed white was used. Colors on walls change with the time of day and what outside is reflecting the light. It's a talent that is accumulated with time.

**Q: Square footage** *(in Photo Questions)*

Do you mind sharing the square footage?  Great project.

A: 1200 sq.ft. It is considered a "Second Unit" in Napa County. 1200 sq.ft. is max. is allowed.

**Q: Flooring.** *(in Photo Questions)*

Was wondering what type of flooring was used here.  Thanks so much.

A: Pays to keep your email forever. The Flooring:
Monarch Collection
European Oak
8" x 3/4" - TR \#1, Natural, Light Wire Brush

---

*Source: Houzz professional profile. Reflects the profile as of 2026-11-08.*