Progressive Plastering (Colm McAllister + team) serves Petaluma, Sonoma County, and the wider Bay Area. We deliver contractor-ready plaster, stucco, and siding work—licensed, insured, and focused on durable, beautiful finishes that stand the test of time.
CA Contractors License # 715224
Six core service areas for builders and homeowners: plastering, lath & plaster, stucco, decorative stucco, E.I.R.S. (insulation finish), and siding installation. We work with project schedules, meet code, and provide clear estimates for every job.
Plastering for homes & builds
Lath & traditional plaster
Exterior & interior stucco
Decorative stucco finishes
E.I.F.S. installation & finishing
Contractor-friendly siding installs

Full plaster systems for new construction, repairs, and remodels. We prioritize smooth, consistent surfaces, precise prep work, and clean finishing so painters and finish trades can move quickly and with confidence.
Traditional lath and plaster installations for restoration and high-end builds. We match historic profiles, ensure proper substrate attachment, and use best-practice moisture and expansion control for long-lasting walls.

Exterior stucco for new homes and remodels: cement, acrylic, and standard finishes. We ensure flashing, drainage plane, and substrate prep are done properly to prevent long-term issues and meet local code.

Custom textures, color matching, and ornamental stucco work for facades and feature walls. We collaborate with designers and builders to deliver consistent color, controlled texture, and long-term performance.

External Insulation Finish Systems (E.I.F.S.) for energy performance and modern exteriors. We install and finish systems to manufacturer standards for improved insulation, durability, and curb appeal.

Siding installations and exterior transitions: we coordinate flashing, trim, and material transitions to keep weatherproofing integral while delivering a clean, finished look that complements stucco and trim work.

I'm Colm McAllister and bring decades of plastering and stucco experience to Sonoma County and beyond. I started working in the plastering industry in 1985 and came to the Bay Area in 1990 after the earthquake. I am still doing it today and prioritize licensed, insured work, as well as clear communication with builders and homeowners! I have completed many projects, mostly residential, initially in San Francisco and in Berkeley after the fire there. Currently, I am working on a project in Glen Elen, and I have a project in Los Altos on my schedule. I am excited to work on most any plaster lath project in the Bay Area. I currently reside in Petaluma and enjoy the outdoors. As an owner-operator, I lead Progressive Plastering with hands-on project supervision.
Ready to schedule a free, no-obligation on-site consultation? Call us or submit a quick form — we serve Petaluma, Sonoma County, and the Bay Area with contractor-friendly scheduling and clear written estimates.

Call now for same-week visits: (707) 555-0123
We’ll call back ASAP!