Custom Home Builder
in Watertown
Architecturally driven design and build. Custom homes, townhomes, and renovations in Watertown and across Greater Boston.
Start Your ProjectOne team, from first sketch to final walkthrough.
Arco Design + Build is an architecture driven residential firm creating homes in Watertown and across Greater Boston. As a true design build partner, we bring architects, designers, and builders under one roof, so your vision, your budget, and the details that matter never get lost in translation between separate firms.
From ground up new construction to modern townhomes and full renovations, we build homes that fit Watertown's evolving, close-knit neighborhoods, with a single point of accountability and a relentless focus on craftsmanship.
Serving Watertown and beyond
Deep familiarity with the neighborhoods, permitting, and Massachusetts high performance energy codes of Watertown and Greater Boston.
Proof, on the ground
A closer look at a project we designed and built in Watertown.
200 Belmont Street
In the heart of Watertown, this project introduced four thoughtfully designed townhomes that blend modern style with functional layouts. Two residences stand as free-standing homes, while the remaining two are paired in a sleek two-unit design.
More homes across Greater Boston
Watertown is one of many communities we build in. Click any home to see the full project.
Why Arco in Watertown
What it takes to build well in one of Greater Boston's most established towns.
Local Knowledge
We know the neighborhoods, the lot conditions, and the permitting that come with building in Watertown and its surrounding towns.
High Performance Building
Massachusetts holds builders to strict energy Stretch Codes. We build to them by design, with better insulation, high performance windows, and homes that stay comfortable and efficient for the long haul.
One Point of Accountability
Design and construction under one roof means no finger pointing between architect and contractor. One team owns your vision, your budget, and your timeline from day one.
A Trusted Local Network
Proven relationships with Greater Boston's best trades and suppliers, delivering the craftsmanship and reliability a Watertown build demands.
A clear path from vision to finished home
Discovery & Planning
We start by listening.
We review your property, zoning, and goals so the project starts on solid ground, with no surprises.
Design & Pre-Construction
Your vision, made buildable.
Architecture, engineering, and permitting move in parallel so every detail is aligned before we break ground.
Construction
Built with precision.
A dedicated Arco team manages every trade, milestone, and detail throughout the build.
Completion & Walkthrough
Delivered with confidence.
A full internal review and walkthrough before you move in, down to the final finish.
Custom Residential Design Build
Architectural designer, builder, or both. One full service team from concept to completion.
Ground Up Construction
From vacant lots and teardowns to final finishes, every stage of new construction managed with precision.
Renovations & Historic Preservation
Seamless structural and aesthetic upgrades that respect a home's architectural integrity.
Project Management
Trusted oversight of schedules, budgets, and execution on your behalf, start to finish.
Building in Watertown
Yes. We build across Watertown, including Watertown Square, East Watertown, Bemis, and Coolidge Square, as well as throughout Greater Boston.
Yes. Our 200 Belmont Street project delivered four townhomes, including free-standing and paired two-unit homes. We handle single-family, townhome, and multi-unit design build throughout Watertown.
In a design build model, the design team and the construction team are the same firm. Instead of coordinating between a separate architect and general contractor, you get one point of accountability for your vision, your budget, and your schedule from the first sketch through the final walkthrough.
Both, from ground up new construction and townhomes to large scale renovations of existing Watertown homes, plus project management and early stage planning.
It begins with a conversation. We review your property, goals, and any zoning considerations, then move into design and pre construction planning. Reach out through our contact form to set up an initial consultation.
Ready to start your project?
Whether you are building new or renovating, we would love to hear about your vision.
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