Dianne R. Altieri is a Pennsylvania Associate Broker and the Director of Operations of The Sam Del Rosario Group at SERHANT., with a track record of $70+ million in closed sales volume and 270+ successful transactions. Dianne pairs precise transaction management with hands-on client advocacy, delivering the operational discipline that supports the team's nationally ranked production while personally representing buyers, sellers, and investors throughout her Pennsylvania markets.
Specializing in Carbon, Lehigh, Monroe, Montgomery, Northampton, and Schuylkill Counties, Dianne guides clients through residential sales, luxury homes, new construction, land and lot transactions, relocation, and first-time homebuyer purchases. As a Florida Referral Agent, she also coordinates trusted referrals for clients relocating to or acquiring second homes in Sarasota County and the Gulf Coast, ensuring a seamless cross-state experience for snowbird clients, retirees, and PA-to-FL relocation buyers.
Backed by 30+ years of administrative and operational expertise, Dianne brings unmatched precision to every file she manages. As Director of Operations for The Sam Del Rosario Group, she oversees transaction workflow, agent support systems, compliance protocols, and the client experience standards that have helped the team earn RealTrends America's Best Real Estate Teams recognition for four consecutive years (2022–2025). That same operational rigor carries into every personal client transaction, ensuring deadlines, contingencies, and contract milestones are managed with documentation-level accuracy.
Clients consistently describe Dianne as proactive, knowledgeable, and an unwavering advocate, qualities reflected in her 5-star reviews across Zillow, Agent Pronto, and FastExpert.
Pennsylvania (Active Sales Representation)
Florida (Referral Coordination Only)
Dianne's mission is to be the Realtor of choice who provides education, guidance, and support to clients building wealth and enriching their lives through real estate. Whether helping a first-time buyer navigate their first closing, coordinating a referral for a Pennsylvania retiree seeking a Sarasota second home, or supporting a seller through a complex relocation, Dianne pairs operational precision with genuine advocacy, making her one of the most trusted operators within The Sam Del Rosario Group at SERHANT.
Beyond real estate, Dianne is passionate about animal welfare and rescue. She has volunteered for more than 12 years with Tails of the Tundra Siberian Husky Rescue, supporting the organization's mission to rescue, rehabilitate, and rehome Siberian Huskies across the Northeast.
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