Cornerstone Real Estate

What Cornerstone Real Estate does

Cornerstone Real Estate, Inc. is a privately held, Boston-based residential real estate brokerage founded in December 2013 and operating from a single office at 1451 Tremont St. The firm provides buyer, seller, and renter representation across the Greater Boston market, with explicit coverage of Boston neighborhoods (Dorchester, South Boston, South End, Roxbury, Mission Hill, Fenway/Kenmore) and surrounding cities (Cambridge, Brookline, Somerville). It employs seven named agents (Anthony Contreras, Adam Sarbaugh, Ben Fisher, Jennifer Sandlin, Luke Drexler, Dana Alhawsi, Joseph Sheehan) and follows a teamwork-based boutique model emphasizing personalized service and neighborhood-level expertise.

The company's core offering is a unified residential real estate platform spanning three service lines: (1) real estate sales representation for buyers and sellers, (2) apartment rental services with exclusive MLS-sourced listings, and (3) property management, the last handled by agents Jennifer Sandlin and Ben Fisher. The technology stack is conventional for a small brokerage: MLS Property Information Network data feeds, Rover IDX-powered listing display, a website with per-neighborhood rental pages, search filters, and a compare-listings feature, plus a Facebook and Instagram presence. There is no proprietary technology, no app, and no AI/ML capability indicated.

Cornerstone's revenue mechanics are predominantly transaction-based, with commissions on completed sales (typically 5-6% of sale price, split between buyer and seller agents) and rental commissions (typically one month's rent), supplemented by recurring property management fees. Go-to-market is sales-led and direct: agents handle the full transaction lifecycle from initial contact through closing, supported by referral flow, MLS distribution, and the company website. The customer base consists of individual residential renters, homebuyers, sellers, and small-scale property investors in the Greater Boston area, with no enterprise or institutional clients.

Name

Cornerstone Real Estate

Legal name

Cornerstone Real Estate, Inc.

Website

https://cornerstoneboston.com

Company type

Private

Founded year

2013

Operating status

Operating

Headcount range

11–50 employees

Short description

Cornerstone Real Estate is a privately held Boston-based residential brokerage founded in 2013 that provides buyer, seller, and renter representation, apartment rentals, and property management across the Greater Boston area through a team of seven agents.

Ownership category

akta.pro rank

Product category

Residential Real Estate Brokerage

NAICS

Offices of Real Estate Agents and Brokers (53121), Real Estate Property Managers (53131)

SIC

Real Estate Agents & Managers (For Others) (6531)

akta.pro primary industry

Residential Real Estate Brokerage (Buy/Sell) (FSAEAJAA)

akta.pro secondary industry

Residential Investment Property Brokerage (SFR/Small Multifamily) (BPAJAAAE)

Keywords

• Residential real estate sales
• Apartment rental services
• Property management services
• Greater Boston brokerage
• Buyer agent representation

Headquarters

HQ city

Boston

HQ country

United States

HQ region

North America

Offices1 record

Markets served

GTM type

B2C

Offering type

Services

Cost components

Personnel, Operations, Marketing or Sales

Revenue model

1. Real Estate Commission - Sales: Traditional real estate commission model where agents earn commissions on completed property sales transactions. Typically a percentage of the sale price.
2. Real Estate Commission - Rentals: Commission earned on rental transactions, typically equal to one month's rent or a percentage of the annual rent.
3. Property Management Services: Jennifer Sandlin and Ben Fisher specialize in property management services, likely earning ongoing management fees from property owners.

Pricing tiers

Go-to-market motion1 record

Distribution channels2 records

Marketing channels4 records

Core offering

Cornerstone Real Estate is a Boston-based residential real estate brokerage that sells homes, rents apartments, and manages rental properties for individual owners, tenants, and investors across Greater Boston neighborhoods. Services are delivered by a roster of licensed agents who list properties on the MLS, market them through the firm's website, and represent buyers, sellers, and tenants on a commission basis, with ongoing management provided under separate recurring agreements.

Product overview

Cornerstone Real Estate is a Boston-based real estate brokerage offering a unified platform of residential real estate services. The company's core offerings include real estate sales representation, apartment rental services with exclusive MLS listings, and property management. Their services span multiple Boston neighborhoods (Dorchester, South Boston, South End, Mission Hill, Roxbury, and Fenway/Kenmore) and are delivered through a team of real estate agents who handle buyer, seller, and renter representation. The platform operates using MLS Property Information Network data and Rover IDX technology for property listings.

Differentiator

Problem solved

Functional benefit

Products and services

• Residential Real Estate Sales Services Buyer and seller representation for the purchase and sale of residential properties, including condos and single-family homes, in Greater Boston neighborhoods. Designed for individual homeowners and prospective buyers transacting in markets such as Dorchester, Fenway/Kenmore, Mission Hill, Roxbury, South Boston, South End, Brookline, Cambridge, and Somerville.
• Apartment Rental Services (Boston Apartment Rentals) Rental search, showing, application, and lease-up representation for tenants, paired with listing and placement services for landlords, across Greater Boston apartment corridors including Fenway/Kenmore, Mission Hill, Roxbury, South End, and surrounding neighborhoods.
• Residential Property Management Services Ongoing management of residential rental properties for small and mid-sized owners, covering tenant placement, rent collection, maintenance coordination, and owner reporting for units in the Greater Boston area.

Quantifiable outcome

• Agent with 17+ years of experience successfully serving clients through referrals
• +1 more outcomes

Named customers6 records

Segments3 records

Ideal customer profiles3 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature1 record

Scale indicators3 records

Recent moves4 records

Expansion highlights4 records

Regional players

• Douglas Elliman: Residential brokerage with growing Northeast presence, including Massachusetts. Competes in adjacent price tiers and for agent recruitment in the Boston metro.
• Gibson Sotheby's International Realty: Boston-area boutique-residential brokerage focused on higher-end sales. Competes for the same buyer and seller pool in neighborhoods like the South End and Back Bay, with a similar service-quality positioning.
• William Raveis Real Estate: Northeast-focused residential brokerage with established Massachusetts operations. Direct competitor in the Greater Boston market for residential sales representation.

Broad incumbents

• Compass: National tech-enabled brokerage with a significant Boston-area presence. Competes directly for buyers, sellers, and agents but operates at vastly larger scale with proprietary technology and marketing tools.
• RE/MAX: Globally recognized residential brokerage franchise with strong brand recognition in Greater Boston. Direct competitor for sales and rental mandates in the same neighborhoods Cornerstone serves.
• Century 21: Global residential brokerage franchise with active Greater Boston offices. Competes for sales and rental mandates and recruits from the same agent pool as Cornerstone.
• Keller Williams Realty: Largest US real estate franchise by agent count, with substantial Boston market presence. Competes on agent productivity, training, and lead generation for residential transactions.
• Coldwell Banker: Long-established national franchise brokerage with active Greater Boston operations. Competes for the same residential sales and rental clients and agent talent as Cornerstone.

Emerging players

• Redfin: Tech-enabled residential brokerage serving Boston buyers and sellers. Represents a differentiated competitive threat through its consumer-facing technology platform and lower-fee structure.

Direct peers

• Boston Proper Real Estate: Small Boston-based boutique brokerage offering residential sales and rentals in similar neighborhoods. Closest head-to-head comparable in scale and service model to Cornerstone.

Market position

Strengths4 records

Weaknesses4 records

Competitive moat3 records

Key risks6 records

Key highlights5 records

Customer concentration

• Facebookfacebook.com/cornerstoneboston
• Instagraminstagram.com/cornerstoneboston/?hl=en

Revenue estimate

Valuation estimate

Number of profiles

Profiles7 records

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Cornerstone Real Estate