What Causeway Development does

Causeway Development (formerly Traggorth Companies LLC, founded 2012, rebranded January 2023) is a Massachusetts-based real estate advisor, investor, and development firm led by principals Dave Traggorth and Dan Hubbard. The company acquires, permits, designs, builds, and markets residential and mixed-use properties, with a delivered portfolio spanning affordable homeownership (Brookley Flats, Chelsea condominiums), affordable rentals (1005 Broadway, Residences at Fairmount Station, Willow Street Flats), mixed-income housing (Mosaic on the Riverway, Ace Flats), market-rate residential (JM Lofts, The Granville, Off Centre Lofts, Mission on Summer), and adaptive reuse of historic structures (Cable Mills, The River Houses & Modern Mill) across Massachusetts communities including Boston, Chelsea, Haverhill, Worcester, Reading, Hamilton, Williamstown, and Brockton.

The firm's technical differentiator is its Passive House construction expertise: projects such as 1005 Broadway (38 apartments, 2023), Willow Street Flats (19 apartments, 2022), and Brookley Flats (45 units, 2024) utilize all-electric HVAC, thick insulated walls, triple-glazed windows, and rooftop solar arrays, with the firm claiming 95% less energy use than conventional construction and solar systems producing up to 60% of building energy. The firm was also an early adopter of modular construction (Flats at 44, 2014) and was the first to use Massachusetts' Housing Development Incentive Program (HDIP).

Causeway generates revenue through three streams: (1) one-time property sales of market-rate and affordable condominiums and townhomes to individual buyers; (2) recurring rental income from long-term ownership of multi-family residential buildings; and (3) professional services revenue from real estate advisory work for non-profit clients aligning their real estate assets to mission. The firm operates with a lean team of 1-10 employees, relying on co-development partnerships with community development corporations (JPNDC, The Neighborhood Developers, Southwest Boston CDC) and project-level debt from financial institutions (Eastern Bank, Webster Bank, MassHousing) to execute deals structured around Low-Income Housing Tax Credits, Historic Tax Credits, New Markets Tax Credits, and state/city subsidies. Pricing is not publicly disclosed; affordable units are allocated via lottery systems and serve families earning 80-100% of area median income.

Name

Causeway Development

Legal name

Causeway Development LLC

Website

https://causewaydevelopment.com

Company type

Private

Founded year

2012

Operating status

Operating

Headcount range

1–10 employees

Short description

Causeway Development is a Massachusetts-based real estate developer specializing in mixed-income, mixed-use, and affordable housing projects using Passive House construction standards, serving municipalities, community development corporations, and non-profit clients across the Greater Boston region.

Ownership category

akta.pro rank

Product category

Residential Real Estate Development

NAICS

Land Subdivision (237210), Commercial and Institutional Building Construction (236220)

SIC

Land Subdividers & Developers (No Cemeteries) (6552), Real Estate Dealers (For Their Own Account) (6532)

akta.pro primary industry

Residential Affordable Housing Development & Construction (IMAFABAI)

akta.pro secondary industries

Residential Land Development & Subdivision Homebuilding (Build-to-Sell Communities) (IMAFABAL), Real Estate Public-Private Partnership (PPP) & Infrastructure-Adjacent Real Estate Advisory (BPAJANAL)

Keywords

• Real estate development
• Affordable housing
• Mixed-use development
• Historic preservation
• Sustainable construction

Headquarters

HQ city

Boston

HQ country

United States

HQ region

North America

Offices1 record

Markets served

GTM type

B2B and B2C

Offering type

Services

Cost components

Supply Chain, Operations, Personnel, Technology or R&D, Infrastructure, Marketing or Sales

Revenue model

1. Property Development and Sales: The company acquires, permits, designs, builds, and markets real estate properties. Revenue is generated through the sale of market-rate and affordable housing units (condominiums and apartments) to buyers.
2. Rental Income: Long-term ownership of multi-family residential buildings generates recurring rental income from tenants in market-rate and affordable apartments.
3. Real Estate Advisory Services: Consulting work helping non-profit clients align their real estate assets to their mission and vision, including development advisory services.

Go-to-market motion1 record

Distribution channels3 records

Marketing channels4 records

Core offering

Causeway Development is a Massachusetts-based real estate advisor, investor, and developer that acquires, permits, designs, builds, and markets residential, mixed-use, and mixed-income housing projects. The company delivers affordable homeownership, affordable rental, market-rate, and adaptive-reuse developments, many built to Passive House energy-efficiency standards, and provides real estate advisory services to non-profit clients.

Product overview

Causeway Development (formerly Traggorth Companies LLC, founded 2012) operates as a real estate advisor, investor, and development company offering a portfolio of residential and mixed-use housing developments across Massachusetts. The company's product portfolio comprises distinct housing projects organized as: (1) affordable homeownership developments including Brookley Flats and the Chelsea 28 condominiums; (2) affordable rental housing including 1005 Broadway, Residences at Fairmount Station, and Willow Street Flats; (3) mixed-income market rate and affordable housing including Mosaic on the Riverway and Ace Flats; (4) market-rate residential including JM Lofts, The Granville, Off Centre Lofts, and Mission on Summer; and (5) adaptive reuse of historic properties including Cable Mills and The River Houses & Modern Mill. Many projects incorporate Passive House certification standards for energy efficiency.

Differentiator

Problem solved

Functional benefit

Products and services

• Brookley Flats 45-unit affordable homeownership development in Jamaica Plain, Boston, designed to Passive House standards with solar readiness, artist live/work units, and community amenities including shared roof deck and gallery space.
• Mission on Summer 7 market-rate residential apartments created through transformation of the historic Mission Chapel in Worcester, Massachusetts, featuring replica historic windows, original moldings, tall ceilings, and stained glass.
• 1005 Broadway 38 income-restricted apartments in Chelsea, Massachusetts with Passive House certification, triple-glazed windows, advanced HVAC systems, and thick insulated exterior walls; includes publicly accessible park with Mill Creek access.
• Ace Flats 55 mixed-income apartments in Reading, Massachusetts adjacent to commuter rail, with 3,400 square feet of retail space; 13 of 55 units are income restricted.
• Willow Street Flats 19 apartments in Hamilton, Massachusetts designed to Passive House standards with all-electric HVAC, thick insulated walls, triple-glazed windows, and roof-top solar arrays producing 60% of building energy; includes 2,400 square feet of retail.
• The Granville 24 market-rate loft-style apartments with exposed brick and beam elements, tall ceilings, and large windows in Haverhill, Massachusetts; includes 2,400 sf of retail space.
• Residences at Fairmount Station 27 mixed-income rental apartments immediately adjacent to Fairmount Avenue Station on the Fairmount Indigo commuter rail in Hyde Park, Boston; includes 27 on-site parking spaces, bicycle storage, community room, and management office.
• J.M. Lofts 18 market-rate one and two-bedroom lofts with 3,500 SF retail in Haverhill, Massachusetts; complete rehabilitation of a historic 1882 building featuring exposed brick, tall ceilings, and high efficiency mechanical systems.
• Mosaic on the Riverway 145 mixed-income housing units in Mission Hill, Boston consisting of 42 market condominiums, 43 affordable condominiums, 60 affordable rental apartments, and 8,500 SF early education center; combines low, middle, and market rate housing.
• Cable Mills 61 one, two, and three bedroom apartments in Williamstown, Massachusetts created through revitalization of three historic mill buildings on a nine-acre site along the Green River; 13 apartments are restricted affordable.
• The River Houses & Modern Mill 20 new construction homes along the Green River in Williamstown, Massachusetts with river and mountain views; designed by MERGE architects with spacious modern interiors.
• Off Centre Lofts 21 market-rate studio and one-bedroom lofts from a historic brick school building conversion in Jamaica Plain, Boston; features reconditioned flooring, massive windows, and tall ceilings.
• Flats at 44 46 apartments in Chelsea, Massachusetts adjacent to Box District Silver Line Station; first modular construction project by Traggorth Companies and first to utilize Commonwealth's Housing Development Incentive Program (HDIP).
• 142 Main Street Brockton (Mill Conversion) Conversion of a historic mill building at 142 Main Street in downtown Brockton, Massachusetts into 30 mixed-income housing units, combining Low-Income Housing and Historic Tax Credits.
• Real Estate Advisory Services Consulting work helping non-profit clients align their real estate assets to their mission and vision, including development advisory and strategic planning services for community-based organizations.

Quantifiable outcome

• Buildings use 95% less energy than conventionally constructed buildings
• +4 more outcomes

Named customers10 records

Segments4 records

Ideal customer profiles4 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature3 records

Partnerships

Seven partnerships are on record, tiered core and minor.

• Jamaica Plain Neighborhood Development Corp (JPNDC)coreStrategic or Co-development Partner · 4 May 2026Partnership on Brookley Flats, a 45-unit affordable homeownership development in Jamaica Plain, Boston's largest affordable homeownership project built and occupied to date. JPNDC serves as the community development corporation partner for the project.
• JGE Architecture + DesigncoreStrategic or Co-development Partner · 4 May 2026Design partner for Brookley Flats, Boston's largest affordable homeownership development. JGE Architecture + Design completed the project featuring artist live/work units and community amenities.
• The Neighborhood DeveloperscoreStrategic or Co-development PartnerJoint venture partner on 1005 Broadway in Chelsea, creating 38 income-restricted apartments and a new publicly accessible park. Long-term partnership relationship including Chelsea Mill Creek project.
• Fresh Turf LLCminorStrategic or Co-development PartnerPartner in the transformation of the historic Mission Chapel in Worcester into 7 market-rate residential apartments.
• Sustainable IncminorStrategic or Co-development PartnerPartner in the Mission Chapel redevelopment project in Worcester, Massachusetts.
• HayconcoreImplementation/ SI/ Consulting PartnerConstruction partner for Chelsea affordable condominiums project with street-level retail in downtown Chelsea.
• Southwest Boston CDCcoreStrategic or Co-development PartnerCollaboration on Residences at Fairmount Station, a 27-unit affordable rental building adjacent to the Fairmount commuter rail stop. First affordable housing built in Hyde Park in over two decades.

Scale indicators18 records

Recent moves7 records

Expansion highlights5 records

Direct peers

• WinnDevelopment: One of the largest affordable housing developers in the Northeast, with extensive adaptive reuse of historic properties and use of LIHTC and Historic Tax Credits — directly comparable to Causeway's preservation-heavy, tax-credit-financed model.
• Jamaica Plain Neighborhood Development Corporation (JPNDC): Boston-based community development corporation and direct CDC partner of Causeway on Brookley Flats. Operates a parallel model of affordable homeownership, mixed-income rental, and mixed-use development in the same urban Boston neighborhoods.
• The Community Builders: National nonprofit developer of affordable and mixed-income housing that combines LIHTC equity, public subsidy, and private debt in the same project structures Causeway uses, operating in similar urban transit-oriented submarkets.
• Preservation of Affordable Housing (POAH): National nonprofit that develops and preserves affordable rental housing using LIHTC and historic preservation financing — highly comparable to Causeway's adaptive reuse and LIHTC-heavy model.
• Beacon Communities: Boston-based affordable and mixed-income housing developer that uses a similar mix of LIHTC, historic credits, and public/private capital stacks to develop mixed-use and mixed-income projects in Massachusetts and beyond.
• Southwest Boston CDC (SWBCDC): Hyde Park-based community development corporation and repeat co-development partner of Causeway on the Residences at Fairmount Station project. Operates the same affordable, transit-oriented development model in Boston.
• The Neighborhood Developers (TND): Chelsea-based nonprofit affordable housing developer that is a direct peer and joint venture partner of Causeway on the 1005 Broadway and Chelsea Mill Creek projects. Operates the same mixed-income, transit-oriented, community-driven development model in Greater Boston.

Others

• Massachusetts Housing Partnership: Statewide public nonprofit that provides financing, technical assistance, and policy support for affordable housing developers in Massachusetts. Functions as both a financing partner to and ecosystem peer of Causeway.

Broad incumbents

• MIT Investment Management Company / Hamilton Company: Large multifamily owner/developer operating market-rate and mixed-income housing across the Northeast. Serves overlapping urban Boston renter demand but at substantially larger scale and with a broader portfolio mandate.

Regional players

• Urban Edge Housing Corporation: Boston-based affordable housing developer with comparable LIHTC-financed rental and mixed-use developments, particularly in Jamaica Plain, Roxbury, and surrounding Boston neighborhoods that overlap with Causeway's footprint.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks5 records

Key highlights7 records

Customer concentration

• Facebookfacebook.com/traggorthcompanies
• LinkedInlinkedin.com/company/traggorth-companies-llc

Compliance7 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles2 records

Funding overview

Funding rounds1 record

Investors1 record

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 Causeway Development