Trulia’s South of Market office draws its design inspiration from a tree. The floor plan “radiates” in rings from its center, in this case an elevator bay. There are wood accents throughout, with a large wooden table in the dining area. Conference rooms have tree-themed window screens.

All that arboreal influence stems from the fact that the real estate website sees itself as a place where people find homes, build and strengthen their communities one ring at a time, from the inside out — like a tree, according to senior manager of communications Matt Flegal.

When Trulia moved to 535 Mission St. in November, it combined teams from three buildings in San Francisco. “It makes such a big difference having people nearby,” Flegal said. “And we have room to have more employees here, not just meet current demand.”

Trulia is the anchor tenant in the building, occupying floors three through eight. The main reception desk, senior management, dining and all-hands areas are on the seventh floor. Lunch is not catered, but there is a kitchenette on each floor with an arrangement of snacks, beverages and coffee-making devices. There’s a small play room, with a pingpong table, Foosball and Pac-Man arcade game. A bike rack attached to one wall gives employees a place to safely stash their wheels.

One thing you’ll notice is the view. Trulia’s office overlooks the Transbay Transit Center project, giving employees a bird’s eye view of the construction. The building will connect to a rooftop park when it’s finished.

The office, designed by Rapt Studio, has an open layout, and furniture with a distinct lime-green color palette. Nameplates that resemble street signs identify the occupant at each desk. Baffles are attached to the ceiling to alleviate the noise. There aren’t any square rooms in Trulia’s office; everything is angular or circular. Each floor has a library with box shelves of tiny succulents, but not too many books.

Trulia formed a committee to come up with names for the company’s 76 conference rooms. Each floor has a different theme. One floor is animal homes, like a foxhole, coral reef or shell. Another is homes from fiction. There’s an iPad Mini outside each room that can be used for checking the room’s availability and making reservations. Less formal meetings happen in break-out spaces outfitted with couches, chairs and tables.

Each floor has a single large conference room. There, employees video chat, using two massive TVs and a camera system called Lifesize, with colleagues in New York, Denver and Bellevue, Wash. Coasters on the table have real estate quotes: “When I said Outer Mission, I didn’t mean Daly City.”

Each Monday, Office Space gives readers a glimpse inside a Bay Area company. Julie Balise is a San Francisco Chronicle staff writer. E-mail: jbalise@sfchronicle.com Twitter: @jkbalise

Trulia

Location: 535 Mission St., San Francisco

Size: 80,000 square feet

Employees: More than 500

Move-in date: Nov. 10, 2014

Years it took to build the office: 6, after the recession shut down construction