Write down what you're observing
Note where it's showing up, when you first noticed it, whether it tracks with weather or humidity, and how it has changed over time, plus any previous repair attempts. A few photos and rough measurements go a long way toward making that first call more useful.
Read the local context
Establish the construction category before the assessment starts, because the three behave differently. Old Village cottages built before the war carry older assemblies where air and moisture move between floors, so a problem showing on one level may have begun on another. The 1970s and 80s ranch subdivisions sit low and often over crawl spaces, which in this climate is where a long-running problem hides unseen. The newer planned communities are raised on pilings or raised slabs and are tighter, so their trouble is more often condensation inside a sealed envelope than groundwater beneath it.
Ask what happens behind the walls
What you can see is only a fraction of the actual problem. A plan built to last covers the water entry point, humidity levels, the condition of the materials involved, how the work area gets contained, and how everything is verified once it's closed back up. The written scope should spell out the prep work and final checks you won't be able to see once the job is finished.
Weigh full scopes, not just prices
Check what each proposal covers for site protection, access logistics, materials, permits, testing, cleanup, restoration, listed exclusions, warranty terms, and how a change order would be handled.
What official local sources add
Neither record governs remediation, but the flood file is genuinely diagnostic here. It tells you whether the property has taken water before, which changes what an assessment should look for -- contamination inside wall cavities from an earlier storm rather than only what is visible now -- and in a town this exposed that history is common enough to be worth checking rather than assuming. The wetlands and coastal-exposure guidance matters at one remove: where correcting a moisture source means regrading near a marsh edge, that work is regulated even though the cleaning is not.
Sources were reviewed June 20, 2026. FEMA flood-zone lines and Old Village historic-district boundaries can differ from one parcel to the next here, so confirm your property's specific zone, historic status, and permit requirements with the Town before work begins.