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Plumbing Inspection in Boston, MA
27% of owner-occupied homes in Boston have changed hands since 2018. That is an ordinary rate, which makes the ordinary mistake more likely: assuming the inspection covered the plumbing.
The one-paragraph answer
In Boston, 27% of owner-occupied homes have changed hands since 2018. Whichever side of a sale you are on, the exclusions decide what you know: a standard inspection stops at the visible plumbing and leaves the sewer lateral to a camera survey.
Source: US Census Bureau, American Community Survey 5-year estimates, table B25038.
When Boston moved in
With turnover near the middle, roughly one owner in five or six arrived recently. For everyone else the last time the plumbing was examined by a third party was whenever they bought.
| Owner households in Boston | Share of all owners |
|---|---|
| Moved in 2021 or later | 9% |
| Moved in 2018–2020 | 18% |
| Moved in 2010–2017 | 33% |
| Moved in before 2010 | 40% |
Source: US Census Bureau, American Community Survey 5-year estimates, table B25038 (tenure by year householder moved into unit), 2023 release. Universe: 70,349 occupied housing units, of which 17,665 are owner-occupied. This counts when the CURRENT occupant moved in, so it measures recent moves as a share of the housing stock — not a rate of sales per year.
What the inspection will not cover
Neither standard requires an inspector to determine water flow, pressure, quality or potability. A report can be entirely clean on a house whose water arrives at a pressure nobody would live with, because that was never a defect it was looking for.
Source: InterNACHI Home Inspection Standards of Practice; ASHI Standard of Practice.
What it is required to cover
The water heater is covered in more detail than most of the system: InterNACHI takes in the energy source, the venting connections, the temperature and pressure-relief valve, seismic bracing where it applies, and the labeled capacity. What it stops short of is operating any of it.
The covered list in full. Most people read the exclusions and stop; the two only mean anything against each other.
What to do about it
Read the exclusions in your own report before the findings. The findings say what was looked at; the exclusions say what you still do not know, and only one of those two lists gets attention.
Ten minutes of reading covers it: what nobody was required to look at, what they were, and the drain run that is a separate instruction altogether.
Other Massachusetts towns we route in
- Medford 18% of owners moved in since 2018
- West Newton 17% of owners moved in since 2018
- Weston 21% of owners moved in since 2018
- Norton 17% of owners moved in since 2018
- Bridgewater 16% of owners moved in since 2018
Checking a plumber in Massachusetts
Checking a credential in Massachusetts
Massachusetts licenses are issued by the Massachusetts Board of State Examiners of Plumbers and Gas Fitters, which publishes a public search you can use before work begins.
Inspection report in front of you?Read us the plumbing lines and nothing else — we do not want the document. We will route you to a contractor covering your area who can quote the items on it, and you are never charged by us. Not only inspection items: Boston gets routed whatever is needed.
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