For Rent $2,300/month • Co-Listing Agent

Seth Williams

Boston MA

Reference Real Estate

126 Closed Sales

$100.5M Total Value

$295K - $6.3M Price Range

$797.3K Average Price

Prior 5 years

About Seth

Seth Williams is the founder and team lead of Reference Real Estate, a top 1% real estate team in Massachusetts and the nation. Consistently recognized by Real Trends as a top 1% team in the country, Reference Real Estate was ranked the #1 small team in Massachusetts in 2024 and a Top 20 small team in 2025. With $500 million in lifetime sales volume, a highest sale price of $6.3 million, and over a decade of experience, Seth is one of the most accomplished agents in Greater Boston.

Seth is the #1 listing agent in Winthrop and East Boston over the last three years, and his team specializes in residential real estate across Boston's most desirable neighborhoods, including South Boston, the South End, the North End, Winthrop, East Boston, Revere, and Cambridge. Seth and his team are recognized for their expertise in luxury homes, waterfront properties, condominiums, multi-family investments, and rental properties across every price point in the Boston metro area.

Whether you are buying or selling a luxury waterfront condo on the Boston Harbor, a historic brownstone in the South End or Back Bay, a multi-family investment property in East Boston, or a single-family home in Winthrop or Revere, Seth and the Reference Real Estate team deliver data-driven pricing strategies, modern marketing, and personalized service to achieve top-of-market results on every transaction.

With a team average sale price exceeding $710,000 and a track record that includes FastExpert Top Agent recognition, Seth serves first-time homebuyers, luxury buyers, sellers, and seasoned investors throughout South Boston, the South End, the North End, Back Bay, Beacon Hill, the Seaport District, Winthrop, East Boston, Revere, Cambridge, and Somerville.

Home Types: House, MultiFamily, Condo, Townhouse, Commercial

Years of Experience: 11

Transaction History

1 Year
2 Year
5 Year

Neighborhoods Seth is Experienced In

Seth's Recent Active Listings

Co-Listing Agent

$559,900
- 3 Beds
- 2 Baths
- 1,378 Sq Ft
286 Revere St

Unit 286

Winthrop, MA
Located in one of Winthrop’s most convenient & commuter-friendly neighborhoods, this updated two-level condo offers a comfortable layout with modern touches throughout. Enter through your private entrance and head up to the main living level, where a spacious landing provides the perfect spot to drop coats & shoes before stepping into the open living, dining & kitchen area. Toward the back of the

Seth Williams Reference Real Estate

Co-Listing Agent

$459,900
- 2 Beds
- 1 Bath
- 1,079 Sq Ft
49 Sagamore Ave

Unit 3A

Winthrop, MA
Don’t miss the chance to own this well-maintained 2-bedroom, third-floor condo in Winthrop, Massachusetts. Enjoy being just steps from the ocean while staying only minutes from Boston, a perfect mix of seaside living and city convenience. The unit features an open floor plan with hardwood floors throughout and great natural light. The spacious primary bedroom includes its own private balcony,

Seth Williams Reference Real Estate

Co-Listing Agent

$1,650,000
- 6 Beds
- 6 Baths
- 4,122 Sq Ft
304 Shirley St

Winthrop, MA
Situated just steps from the sand, 304 Shirley presents a rare opportunity to own a fully occupied 6-unit building in one of Winthrop's most desirable seaside neighborhoods. Each unit is a well-maintained 1-bedroom, offering consistent rental income and strong tenant demand. This beachside property is perfectly positioned near local shops, restaurants, and public transportation, making it a

Seth Williams Reference Real Estate

Co-Listing Agent

$1,050,000
- 11 Beds
- 3 Baths
- 4,032 Sq Ft
11 Pearl Ave

Winthrop, MA
Winthrop is one of the last undervalued waterfront towns in Greater Boston, and opportunities like this don't sit long. 11 Pearl Ave is a vacant 3-family just a block from the ocean, generating $10,500/month at market rents with zero displacement headaches. Three floors, 11 bedrooms total, 4,032 sq ft of income-producing space on a town where the average days on market keeps shrinking. 3 separate

Seth Williams Reference Real Estate

Co-Listing Agent

$1,500,000
- 4 Beds
- 3.5 Baths
- 3,672 Sq Ft
37 Fairchild Dr

Reading, MA
Welcome home to this stunning residence in a premier Reading neighborhood. This beautifully maintained Colonial at 37 Fairchild Dr offers the space, layout & setting buyers are looking for. A spacious family room with vaulted ceilings & skylights fill the home with natural light & opens seamlessly to a large eat-in kitchen w/ Thermador/SubZero appliances & an exposed beam. The primary suite

Seth Williams Reference Real Estate

Co-Listing Agent

$659,900
- 3 Beds
- 1 Bath
- 1,249 Sq Ft
169 Pine St

Quincy, MA
Charming 3-bedroom, 1-bath home in the highly desirable Wollaston neighborhood. Owned by the same family for nearly 40 years, this well-maintained residence reflects pride of ownership and offers a functional layout that can be enjoyed as-is or updated over time. The home features hardwood floors throughout the bedrooms, living room, and dining room, along with a cozy fireplace and enclosed front

Seth Williams Reference Real Estate

Co-Listing Agent

$650,000
- 3 Beds
- 2.5 Baths
- 2,278 Sq Ft
1080 Shirley St

Winthrop, MA
1080 Shirley St presents a rare two-family property with two separate structures, offering exceptional flexibility for owner-occupants or investors seeking strong rental potential. Ideally located just steps from the ocean in Winthrop, the property enjoys beautiful water views and a true coastal setting. The front unit features a spacious sunroom that fills the home with natural light, along with

Seth Williams Reference Real Estate

Co-Listing Agent

$399,000
- 1 Bed
- 1 Bath
- 702 Sq Ft
247 Washington Ave

Unit 10

Winthrop, MA
Rare opportunity to own a harbor front condo with beautiful marina and water views in desirable Winthrop. This bright second-floor unit features an open layout and updated kitchen with granite countertops, stainless steel appliances, recessed lighting, and a peninsula that opens to the living area. Sliding glass doors lead to a private balcony overlooking the water, perfect for relaxing and

Seth Williams Reference Real Estate

Co-Listing Agent

$530,000
- 2 Beds
- 1 Bath
- 786 Sq Ft
120 Bremen St

Unit 3

Boston, MA
Roof rights available! Welcome to 120 Bremen! A beautifully updated top-floor condo offering modern style and city convenience. This sun-splashed two-bedroom, one-bath home features hardwood floors, recessed lighting, and an open floor plan that flows from the living and dining areas to a sleek kitchen with stainless steel appliances, gas stove, and stone countertops. Step outside to your own

Seth Williams Reference Real Estate

Other Experience

First Time Home Buyers, Investments, Luxury Homes, Property Management

Seth Williams

(857) 776-0975

Reference Real Estate

(857) 776-0975

Homes for Sale by City

Seth Williams

About Seth

Transaction History

Seller Deals

Production Over Time

1 Year View by Quarter

Seller Deals

Production Over Time

2 Year View by Quarter

Seller Deals

Production Over Time

5 Year View

Neighborhoods Seth is Experienced In

Seth's Listings and Deals

Seth's Recent Active Listings

Other Experience