Aerial view of historic row houses along a city street with trees, overlooking a river and a city skyline with high-rise buildings and a bridge in the background.

A large white house with a stone facade, black shutters, and a well-manicured lawn with bushes. There is a basketball hoop on the left side of the driveway. The sky is clear and blue, surrounded by green trees.

Modern living room with a fireplace, large windows showing a city skyline at sunset, a beige sofa with pillows, a chair, and indoor plants.

Bright and spacious living room with white walls, large windows with sheer curtains, a crystal chandelier, and modern furniture including a white sofa, armchairs, and a patterned area rug.

Street view of historic row houses with colorful facades, trees, parked cars, and pedestrians on a sunny day with a blue sky.

Open-concept living room and kitchen with hardwood floors, white cabinets, large windows, and modern lighting fixtures.

Spacious living room with large arched windows, beige curtains, neutral-colored sofas with accent pillows, a colorful area rug, a central coffee table, a fireplace, and a view of green trees outside.

A large, two-story house with a stone staircase leading up to the front door, surrounded by lush green bushes and trees, with a well-maintained lawn and a clear blue sky.

Cityscape view from a rooftop overlooking a park with trees and surrounding buildings at sunset.

Sunset view over a river skyline from a rooftop terrace with outdoor furniture and greenery in Boston.

Large house with a yard, swimming pool, and garden surrounded by trees in spring.

A park with a statue of a man on horseback, surrounded by trees and tall buildings under a bright blue sky with clouds and sunlight

Spacious modern apartment living room with large windows, white walls, hardwood floors, a gray sofa, beige armchairs, coffee tables, and a kitchen island.

A spacious living room with cream-colored walls, large bay windows with white curtains, a grand black piano, cream-colored armchairs, a beige sofa, and wooden furniture with decorative lamps and art.

Front entrance of a classic building with stone steps, black wrought-iron railings, and large windows, surrounded by greenery including trees and bushes, under a partly shaded sky.

Open-concept living and dining space with large windows overlooking water, contemporary decor, and a kitchen with island seating.

A cityscape view of a downtown area along a river, featuring modern apartment buildings with balconies, boats docked along a pier, and a skyline with bridges and high-rise buildings under a partly cloudy sky.

Rooftop terrace with a white cushioned outdoor sofa, decorative pillows, potted plants, and a view of a city skyline with tall modern skyscrapers on a sunny day.

Bright, modern living room with large windows, white walls, and wooden flooring. Contains white and beige sofas, round tables, and artwork on the walls, with city skyline views.

View of a city skyline with high-rise buildings across a waterfront, with a wooden deck and group of people sitting and walking near the water's edge, green trees, and planters with flowers in the foreground.

Modern living room with cream sofas, dark brown armchairs, a large abstract painting, a potted plant, wood flooring, and a wall-mounted TV.

City skyline featuring tall modern glass skyscrapers and historic red brick buildings under a blue sky.

Modern living room with white sectional sofa, blue and white pillows, wooden coffee table, large windows with brick walls, potted plant, mounted flat-screen TV, light-colored rug, and artwork on the wall.

For nearly 20 years, Dave Costello & Scott Accorsini have been trusted advisors in Boston real estate, guiding clients through more than $1,000,000,000 in closed transactions across the city and surrounding suburbs. With over 40 years of combined experience, we specialize in luxury condos, townhomes and new construction, with a particular focus on Back Bay, Beacon Hill, South End, Seaport, Midtown, Waterfront, Brookline & Newton.

Our clients include everyone from first-time buyers to high-net-worth families, professional athletes, executives and family offices. We also represent developers, asset managers and investors on ground-up condo projects, multi-family repositioning and portfolio sales. Whether you’re buying a pied-à-terre, selling a flagship residence or evaluating a development site, you get the same level of white-glove service, discretion and data-driven advice.

What sets us apart is our deep, day-to-day knowledge of the Boston condo market. We monitor inventory, sales and rental data building by building and block by block, so we can help you see around corners—whether that’s pricing a listing for multiple offers, structuring a winning offer in a competitive situation, or deciding when to sell and when to hold.

We believe great representation is equal parts strategy, communication and execution. That means honest pricing guidance, clear expectations, meticulous preparation, top-tier marketing and skilled negotiation from the first conversation to the closing table. Most of our business comes from repeat clients and referrals, and we take that trust seriously.

If you’re thinking about buying, selling or developing in Boston, we’d be honored to be your first call.