Quick answer
603 provides radon mitigation inspections in North Andover. The free visit documents the property, defines the proposed work and exclusions, and prices the address rather than a townwide assumption.

North Andover evidence card
Name the geography correctly
The source row identifies North Andover as a county subdivision in Essex County. That label keeps this page tied to the correct Census geography; it does not tell 603 what exists below grade at a particular North Andover address.
Keep the housing year in context
The 2023 ACS reports 1978 as the townwide median year built. A median is not the construction date of the inspected home, so the North Andover visit still needs permits, prior invoices, photographs, and visible alteration clues before 603 describes an assembly.
Separate occupied homes from ownership
ACS table B25003 counts 11,521 occupied units in North Andover: 8,048 owner-occupied and 3,473 in the remaining occupied category. The published owner share is 70%. Those figures put permission and decision authority on the checklist without assigning either status to the customer.
Do not turn building mix into a diagnosis
ACS table B25024 counts 12,010 housing units, including 6,623 single-unit detached structures and 5,387 units in other structure categories. The detached share is 55%. No ACS count predicts a radon result or pressure-field communication. Testing and field diagnostics remain address-specific.
Use population only as place context
Table B01003 reports 31,024 residents for North Andover. That number identifies municipal scale, not demand, crew availability, travel time, or the likely condition of one basement. Scheduling and serviceability still depend on the address and proposed work.
Leave the unused-unit arithmetic out of the house story
The fact pack records 12,010 total units and 11,521 occupied units, a difference of 489. That difference is a town statistic only. It cannot support a vacancy claim about the inspected building or change the radon mitigation recommendation.
Build the North Andover service worksheet
For radon mitigation, 603 starts with a marked property plan rather than a townwide pattern. The mitigation sketch needs the test location, each slab or crawl section, sump openings, candidate suction points, fan placement, power, and the exhaust route. The estimate should identify what was observed, what remains concealed, what the homeowner reported, and what must be confirmed before installation.
How the North Andover visit turns into a decision
Step 1: A test came back elevated
Confirm the test conditions and inspect the slab, foundation, and possible suction locations. For North Andover, the nearby municipal reference is 1,978 townwide median year built; it remains context and is not treated as a finding at the home. The inspector records the answer as observed, homeowner-reported, or still unknown, then marks its position on the property plan.
Step 2: The basement has several slabs
Map each footprint because one suction point may not communicate through every section. For North Andover, the nearby municipal reference is 11,521 occupied housing units; it remains context and is not treated as a finding at the home. The inspector records the answer as observed, homeowner-reported, or still unknown, then marks its position on the property plan.
Step 3: A system already exists
Check the fan, monitor, piping, seals, and whether the current suction field still performs. For North Andover, the nearby municipal reference is 8,048 owner-occupied units; it remains context and is not treated as a finding at the home. The inspector records the answer as observed, homeowner-reported, or still unknown, then marks its position on the property plan.
Step 4: Well water is part of the concern
Keep airborne radon and radon in water as separate measurements and separate treatment decisions. For North Andover, the nearby municipal reference is 12,010 total housing units; it remains context and is not treated as a finding at the home. The inspector records the answer as observed, homeowner-reported, or still unknown, then marks its position on the property plan.
What the North Andover proposal records
The final document connects the observed condition to preparation, measured quantities, the installation route, restoration, future service access, and the stated warranty. It also identifies owner responsibilities, third-party work, concealed unknowns, and the exact point where the approved radon mitigation boundary stops. That lets the homeowner compare the proposed work rather than only the number at the bottom.
Prepare for the North Andover inspection
Before 603 arrives, keep the reported area and the route to it visible. Gather dated photographs, earlier estimates, invoices, permits, equipment labels, and any test results that belong to this property. Write down when the concern appears, what changed beforehand, and whether another room provides a normal comparison. If the home has an addition or earlier lower-level work, identify that boundary on any available plan. The 1978 town median and 31,024-person Census count remain background only; the homeowner records establish the timeline for this address. Also identify who can approve the work and which utilities, stored items, pets, parking limits, or shared spaces could affect crew access. Those details help 603 price the intended radon mitigation work without hiding preparation or restoration inside a broad allowance.
A 603 radon mitigation work example

Price and written protection
603 currently places radon mitigation projects in a broad $900 to $6,000, with most systems between $1,950 and $2,250 planning range. The measured quantities, access, preparation, equipment, and restoration determine the actual North Andover price.
For qualifying work, 603 states a 10-year warranty on the mitigation system and its components. The proposal identifies the covered work, conditions, and exclusions.
See the method in the field

North Andover homeowner questions
What warranty applies?
603 provides a 10-year warranty on the mitigation system and its components.
When should the post-mitigation test run?
The testing plan should follow the stated test conditions and timing provided with the installed system.
Can one fan serve an addition and the original slab?
Only when field testing shows the suction field communicates across those footprints. The plan should not assume it.
Get a written North Andover radon mitigation scope
603 will inspect the property, mark the work boundary, and explain the price, responsibilities, and exclusions.
Related 603 resources
- Radon Mitigation service overview
- radon testing
- radon mitigation systems
- understanding a radon result
- 603 service areas
Town figures come from U.S. Census Bureau 2023 ACS 5-year tables B25035, B25003, B25024, and B01003. The town-image caption links to its Wikimedia Commons source and license. 603 supplied the service, pricing, warranty, and operating details.
Common questions about radon
- What are the signs of radon under a house, other than a high test result?
- What is a mitigation system for radon?
- What is a radon test?
- What is the major source of radiation in our homes?
- What mask should I use to filter radon while installing a fan
- What should you do if you find radon in your home?
- What was your radon level before and after the mitigation system?
- Why are rain gutters sometimes used for radon mitigation systems?
- Why is radon more prominent in homes?
- Will portable home air cleaners reduce radon?
- Can asbestos block radon that’s outside? It is in my basement floor
- Can radon levels of 100 be mitigated effectively, and if so how much?