Sustainable Properties SD

About Sustainable Properties SD

Built from a leap of faith and a long-term point of view.

From one first multifamily property to a trusted real estate company, we help owners, investors, and homeowners create value with integrity, practical systems, and sustainable choices.

Sean Mazelli, founder of Sustainable Properties SDSustainable Properties SD team

About Sustainable Properties SD

How Sustainable Properties began

Sustainable Properties was built from the ground up. In 2010, with no outside funding and no safety net, the company’s founder used his entire $23,000 401(k) to purchase a first multifamily property.

That first investment became the starting point for a company shaped by hands-on ownership. Every side of the work was learned firsthand: property operations, tenant and guest communication, maintenance coordination, renovations, budgeting, and the systems that help a property perform over time.

Since then, Sustainable Properties SD has grown into a forward-thinking real estate company serving owners, investors, and homeowners through short-, mid-, and long-term rental management, remodeling, project management, development, and real estate investment.

Sustainability has always been part of the approach, not an afterthought. We look for practical ways to improve comfort, durability, and efficiency. From thoughtfully repurposed materials to natural, lasting finishes and energy-smart upgrades.

Today, the same principle that inspired that first purchase guides every project: build places that serve people well, protect long-term value, and balance profitability with responsibility to the community and environment.

14+

Years in Real Estate

100+

Properties Managed

3

States: CA · MA · NC

5.0 ★

Google Rating

Our journey

Built over more than a decade.

  1. Founded in San Diego

    Sustainable Properties SD launched with a focus on eco-conscious short-term rental management in San Diego's most vibrant neighborhoods.

  2. Expanded to Multi-Family

    Grew the portfolio to include multi-family properties, bringing the same hands-on care to long-term tenants across San Diego County.

  3. Sustainable Remodeling Division

    Launched a dedicated remodeling arm focused on solar, EV charging, and green building upgrades that increase property value and reduce environmental impact.

  4. East Coast Expansion

    Opened satellite offices in Boston, MA and Raleigh, NC — bringing the Sustainable Properties model to new markets and investors.

  5. 100+ Properties Managed

    Reached a milestone of over 100 properties managed across three states, maintaining a 5.0 Google rating built entirely on word-of-mouth and repeat clients.

What guides our work

Sustainability

Thoughtful choices that support comfort, durability, and a lighter environmental impact.

Integrity

Clear communication and practical guidance at every step.

Experience

Real-world knowledge across rental operations, remodeling, and property ownership.

Let’s make your next move a smart one.

Connect with Sustainable Properties SD to talk through your property goals.

Contact Us