ARG Conservation Services

ARG Conservation Services ARG Conservation Services is a design–build firm specializing in the conservation and management of cultural resources.

We undertake conservation of historic buildings and architectural features, monuments, collections in historic contexts, and large-scale works of art. Principals and staff are nationally recognized leaders in architectural and materials conservation, representing decades of continuous experience planning and executing projects in culturally significant settings.

Helping to keep the face of one of San Francisco’s sacred spaces as vibrant and strong as the community within. ❤️‍🔥⛪ De...
05/29/2026

Helping to keep the face of one of San Francisco’s sacred spaces as vibrant and strong as the community within. ❤️‍🔥

⛪ Designed by architect Henry Geilfuss, St. Marks () was the largest German church in California when it was dedicated in 1895. This beautiful red brick building was constructed blending Romanesque style and Gothic elements, and has survived earthquakes, fires, and encroaching development. ARG/CS recently completed exterior restoration work to maintain the building’s historic charm.

🧱 One of the major components of this project was comprehensive exterior masonry repairs to care for the brick and cement facade. Areas with failing mortar were grinded out and repointed with a mortar mix of cement, lime, sand, and red pigment to match the historic mortar. On the ground level, the cement parge coat was applied on top of brick. In areas of cracking and flaking, our team cleaned the surface and drilled out the failing cement and re-covered the original brick with a new color-matched cement to create a smooth surface.

The slate roof, which was last replaced in 2006, was repaired and shingles replaced as needed. The team also replaced damaged and missing ventilation grilles with custom-fabricated new ones. Window restoration work, including broken glass replacement, helped to keep the church’s stained glass shining.

❣️A huge thank you to .create and for their collaboration on this project!

⭐Looking out to the San Francisco Bay and Pacific Ocean beyond, this Memorial Day, we remember those that were lost duri...
05/22/2026

⭐Looking out to the San Francisco Bay and Pacific Ocean beyond, this Memorial Day, we remember those that were lost during wartime and celebrate their memory.

Located in , the World War II West Coast Memorial was designed by San Francisco architects Hervey Parke Clark and John F. Beuttler and dedicated in November 1960. The curved wall of gray California granite features the names of 413 American servicepeople lost or buried at sea while serving during World War II. Landscape architect and Bay Area native Lawrence Halprin designed the Monterey pine and cypress tree-filled terrain. The site also features a bench and robed statue, representing the spirit of freedom.

When ARG/CS and were called to perform maintenance treatments, the memorial had areas of soiling, deteriorated mortar joints, and a widespread patchy appearance to the granite caused by decades of exposure to moist coastal air.

Cleaning treatments included pressure washing with warm water and applications of biogrowth and restorative gel cleaners. On areas with darker discoloration a poultice was applied.

Masonry repairs included 100% repointing of mortar joints with a mortar mix of sand, lime and cement. In skyward facing joints, deteriorated caulk was removed and replaced, and a lead cap was added to prevent future moisture intrusion. Lastly, a Dutchman repair was conducted on an area with a small missing chunk of granite. This method involved removing the damaged section, securing a matching stone in the gap with mortar and epoxy, and delicately blending the finished surfaces with potassium silicate paints.

With regular care, this monument to our nation’s servicemembers will stand looking out from the city’s rocky shoreline for years to come. 🌊🌲

05/15/2026

🌇From San Diego to Crescent City, we’re bringing all the beautifully diverse pieces of the preservation field together to create something wonderful.

🍊Last week, professionals from across the state gathered to celebrate the California Preservation Foundation’s 50th annual conference in the place where it began: beautiful Riverside in the heart of the Inland Empire.

CPF 2026’s presentations were categorized into six thematic tracks to help participants to guide their learning: Reuse & Revitalization, Participation & Engagement, Tools & Technology, History & Heritage, and Preservation Planning & Practice. Conference attendees could also participate in tours to learn more about the history of the city and region, and workshops

🖼️ On Friday, LA-based conservation firm EC2 and ARG/CS Principal Jennifer Correia and senior conservator Johana Moreno gathered at to lead the “Piecing it Together: Modern Techniques in Mosaic Conservation” workshop. Participants learned about the history of mosaic art dating back to antiquity, traditional materials and methods, and common conservation practices. Guests also used tools to cut colorful glass tiles and apply grout to design and create a small piece of mosaic art to take home with them. A huge thank you to all the guests for their participation, and thank you for sharing your beautiful art pieces!

At the Preservation Awards later that evening, Jennifer Correia and Johanna Moreno took to the stage to accept an award for the mosaic conservation completed as part of the restoration of Berkeley Substation 8. Congratulations to the ARG/CS team for their work caring for these WPA-era murals!

🌟Thank you so much to for another conference filled with learning, advocacy, celebrating preservation successes, and bringing professionals, advocates and community members together. We can’t wait to see you next year in San Jose!

05/08/2026

Paper-thin origami folds cast in bronze? Only could create such magic ⛲

Back in 2020, we worked with to perform maintenance conservation treatments on Asawa’s “Origami Fountains,” a beloved feature in the heart of .

Created in 1976, these two bronze fountains translate the delicate art of origami into sculpture, reflecting Asawa’s artistry and Japanese American heritage.

Our work focused on general cleaning and applying a protective wax coating to preserve the fountains’ natural patinas—the rich mix of bronze, reds, oranges, browns, and greens that have developed over time.

Though the fountains no longer run, the sculptures remain a treasure of Japantown and a powerful reminder of Asawa’s timeless vision.

🏙️ Did you know that all buildings in San Francisco 5 stories or taller are required to have a comprehensive facade insp...
05/01/2026

🏙️ Did you know that all buildings in San Francisco 5 stories or taller are required to have a comprehensive facade inspection every 10 years?
 
ARG/CS offers facade inspection services to inform building maintenance, ensure structural stability and pedestrian safety, and help building owners care for their structures and maintain compliance with San Francisco’s Facade Inspection and Maintenance Program.
 
🧗 Through our years in business, we’ve found that scaffolding accounts for a significant cost of a project which doesn’t seem practical for a quick façade survey. To stay flexible and keep costs down, ARG/CS offers inspections via ropes and fire escapes as alternatives to traditional scaffolding and swing stages. These options allow us to customize our approach based on a building owner’s budget while taking advantage of a structure’s unique attributes.
 
And, for us, the stunning city views are just an added bonus.
 

🌍🌿 Happy Earth Day! We’re so excited to celebrate the wonderful world around us, and all the beings in it. This week, we...
04/24/2026

🌍🌿 Happy Earth Day! We’re so excited to celebrate the wonderful world around us, and all the beings in it. This week, we’re highlighting a project with some gorgeous creatures that literally sits at the intersection of nature and San Francisco’s city streets.

🐻🦁 Completed by artist Melvin Earl Cummings in 1908, “Bear and Lion” are located at the intersection of 8th Avenue and Fulton Street at one of the entrances to Golden Gate Park. These sculptures sit atop stone benches on either side leading into the park.

The bronze figures were heavily soiled and stained, with little to no evidence of a preexisting protective coating. The benches also had soiling and biological growth, with areas of spalling where the stone was deteriorating, as well as open and crumbling mortar joints.

One of the first steps to revitalizing these sculptures was cleaning with gentle detergents and pressurized water, and applying treatments to remove layers of graffiti and the paint used to cover it. To protect and honor how the bronze has changed and reacted to decades of life, the bright teal patina was preserved and integrated into the sculptures’ new face by heating the metal and adding a protective wax coating.

Careful examination revealed that nearly 80% of the masonry joints were in need of attention. The stone benches were repointed with a mortar mix of sand, lime, and cement. Once this had finished curing, an anti-graffiti coating was added to the benches to prolong the life of all masonry features. With these treatments and regular maintenance, Bear and Lion will be able to exist in harmony with their surroundings, and to welcome people to Golden Gate Park for years to come. 💙💚

Thank you to for bringing us onto this project, for stewarding these beloved public spaces, and to for their collaboration!

Spring has sprung, and things are heating up! Check out our recent work keeping some of San Francisco’s fire stations lo...
04/17/2026

Spring has sprung, and things are heating up! Check out our recent work keeping some of San Francisco’s fire stations looking hot 🔥🚒

❤️‍🔥 Installed in 1996, “Fire” by artist Jaap Bongers is located above the main entrance of Fire Station #24. This relief is composed of bronze letters that spell out the word “fire” in 13 different languages. When our team arrived onsite, the sculpture showed signs of soiling and corrosion, and a few of the bronze letters had become unstable. The stucco itself had abrasions, some biogrowth, and areas of loss.

To remedy these conditions, the treatment plan began with cleaning the artwork, plaque, and surrounding stucco. The letters were cleaned using conservation-grade detergents, and areas of heavy corrosion were mechanically removed with electric and hand sanding tools. A chemical patina was applied to protect the metal and add richness and depth. Finally, a protective wax coating was applied to the plaque, and a clear acrylic caulking was injected into the anchor points to stabilize the loose letters.

🩵 “Diagonal Relief,” by artist Elisabeth Saltos, is a perforated aluminum sculpture coated with a polyurethane finish, installed in 1996 at Fire Station #44. Similar to “Fire,” this sculpture showed overall soiling and pollutant accumulation on its surface, plaque, and the surrounding stucco. At some point, paint splatters and dark marks had also accumulated on the metal. Treatment involved cleaning the artwork, plaque, and surrounding stucco, and finished with a protective wax coating applied to the plaque.

Thanks to for bringing us onto these projects, and to for welcoming us into their stations!

As the Tenderloin Recreation Center completes the final stages of its redesign project, we are thrilled to share our wor...
04/10/2026

As the Tenderloin Recreation Center completes the final stages of its redesign project, we are thrilled to share our work with and to contribute to a vibrant playscape for the local community! 🛝⛹️

These sculptures are titled “Dancing in the Sea of Milk,” and “African King with Animal Power,” and were created by Martha Heavenston in 1995, featuring artistic contributions made by the neighborhood’s children. After decades of fun and games, and wear and tear, the sculptures were in need of attention. Plans were made to remove the pieces to prepare them for conservation treatment, and to reinstall them in a different area of the rec center. Onsite, our team measured, photographed, and carefully examined the sculptures to discover the materials and assembly methods, and to determine the feasibility of the relocation plan. Based on this investigation, ARG/CS devised a comprehensive plan for the statues’ removal, storage, conservation, and reinstallation. designed new structural details for mounting the sculptures onto new concrete pads in the Recreation Center’s playground, and provided the workspace where our conservators and masons () carried out the restoration work.

The restored sculptures have now been reinstalled in a brand new spot at the Tenderloin Recreation Center — stop by to see them! Photos of the pieces in their new location courtesy of . A huge thanks to and for their collaboration on this project!

04/03/2026

⛪️ In San Francisco, St. Luke’s Episcopal Church (), a beautiful ca. 1910 French Gothic Revival landmark, recently underwent a major restoration to preserve its structure and historic character.

One of the oldest parishes in the Diocese of California, St. Luke’s was relocated to its current location from Pacific Avenue in 1884. The current structure was rebuilt after the 1906 earthquake and completed in 1910.

ARG/CS teamed with Pacific Masonry Restoration trades specialists on the restoration of the sanctuary, focusing on masonry restoration services. ARG/CS completed work in two phases. Work included structural crack repair (epoxy injection, pinning, and brick replacement) and carefully integrating new electrical systems while restoring finishes to match the original. We also supported additional repairs, from marble stairs to water intrusion investigations.

As with many historic buildings, unexpected conditions came up along the way, but we worked closely with the client to adapt in real time and keep the project moving forward!

Proud to help preserve another piece of the city’s history for years to come! 🌉

As Women’s History Month 2026 comes to a close, we’re ending on a high note! This week, we’re highlighting some of the t...
03/27/2026

As Women’s History Month 2026 comes to a close, we’re ending on a high note! This week, we’re highlighting some of the talented female muralists whose beautiful works we’ve had the privilege of caring for, found all around the Bay Area. 🌉

🎨Jane Berlandina 📍Coit Tower, “Home Life.” Originally from France, Berlandina was the only woman to create murals at Coit Tower (). Unique among the WPA-funded project’s artists, hers alone are fresco secco (pigments and binder applied to cured rather than wet plaster). Anne Rosenthal conserved the murals after a water heater flood, with ARG/CS conserving the surrounding finishes.

🎨Juana Alicia () with Emmanuel Catarino Montoya 📍SFO Airport, “Santuario.” Completed in 2000, this vibrant mural depicts human and migratory species in the surrounding wetlands. Working with and , ARG/CS’ Johana Moreno () with Elisabetta Perfetti () and Beate Bruhl (.bruhl.design) conserved the mural and repaired its sculpted 3-D bird elements.

🎨Helen Bruton and Florence Alston Swift 📍UC Berkeley () Old Art Gallery Mosaics, “Sculpture and Dance.” This ca. 1936 WPA-funded Byzantine-style mosaic was conserved before and after a seismic upgrade/adaptive reuse of the building. The original work was created by women with a male assistant, and the ARG/CS conservation team carried out their work in the same spirit!

🎨Carolyna Marks 📍Martin Luther King Jr. Park, “Wall for Peace.” Berkeley artist and peace activist Marks was the mastermind of this late 1980s community mosaic of over 5,000 hand-painted tiles promoting unity and world peace. ARG/CS with installed/removed protective facing, removed/reinstalled restored tiles, and repaired cracks and spalls in tiles and concrete.

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San Francisco, CA
94111

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Wednesday 8am - 5pm
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