Why a Property Survey Is One of the First Steps You Should Take
Before you start sketching layouts or pricing out finishes, there’s one critical step that too many homeowners overlook:
Getting your property surveyed.
It might not be the most exciting part of building an ADU, but from a construction and permitting standpoint, it’s one of the most important.
What a Survey Actually Tells You
A professional land survey gives you a clear, accurate picture of your property, including:
Exact property boundaries
Existing structures (house, garage, sheds)
Setbacks and zoning compliance lines
Easements (utility access, drainage, rights of way)
Topography (grading and slope)
Think of it as the foundation for your entire project—before any excavation, framing, or permitting begins.
Why It Matters for ADUs in Massachusetts
Even with ADUs now allowed by right, your project still has to fit within local zoning rules.
That includes:
Setbacks (how far structures must be from property lines)
Lot coverage limits
Height restrictions
And here’s the reality:
Without a survey, you’re guessing.
We’ve seen homeowners design a beautiful detached ADU, only to find out it doesn’t meet setback requirements once the actual property lines are confirmed.
That leads to:
Redesign costs
Permit delays
Or worse scrapping the plan entirely
Avoiding Costly Mistakes in the Field
From a builder’s perspective, a survey isn’t just for paperwork—it directly impacts construction.
It helps us:
Properly stake out the building location before excavation
Plan for grading and drainage so water moves away from structures
Avoid building into easements or restricted areas
Coordinate accurately with engineers and inspectors
Skipping this step can create serious issues once machines are on site.
When You Should Get a Survey
The best time?
Right at the beginning, before design is finalized.
At Mass ADU, we typically recommend getting a survey during the feasibility phase, alongside:
Zoning review
Septic evaluation (especially under Title 5 requirements )
Initial layout concepts
This ensures everything we design is actually buildable.
A property survey isn’t just a box to check—it’s what keeps your ADU project grounded in reality.
It protects your investment, speeds up permitting, and gives your builder a clear roadmap to execute the project the right way.
📞 Call us at (617) 797-9167
This article is for informational purposes only and is not intended as legal, financial, or permitting advice. Always confirm requirements with your local building department and lender before beginning your ADU project.
