DampApp Pro
PropertySurvey Pro
HousingSurvey ProUS Environmental Protection Agency (EPA)
A Brief Guide to Mold, Moisture and Your Home
The key to mold control is moisture control: fix the water problem, clean up the mold and dry water-damaged areas and items within 24 to 48 hours.
Official sourceInspection software for the US
Inspection apps for the US: mold, homes and property condition
In the US, use DampApp Pro for mold and moisture inspections, PropertySurvey Pro for home inspections, property condition assessments and move-in and move-out reports, and HousingSurvey Pro for public housing agencies. DampApp Pro and PropertySurvey Pro are free to download and use.
There is no single US rulebook for inspections. The EPA publishes mold guidance but no federal mold limits, commercial due diligence follows the voluntary ASTM E2018 guide, HUD's NSPIRE standards apply to covered public and assisted housing, and each state decides who needs a license to inspect homes or assess mold. The right app depends on which of those your work sits under.
Climate drives most moisture findings. Humid Gulf and Southeastern summers push condensation onto air-conditioned surfaces and into crawl spaces; cold Northeastern and Midwestern winters bring attic condensation, ice dams and wet basements; and storms and plumbing failures leave water damage that the EPA says should be dried within 24 to 48 hours to prevent mold growth.
Both field apps work without a connection in basements, crawl spaces and vacant units. You can run real inspections on the free versions of DampApp Pro and PropertySurvey Pro: reports export as watermarked PDFs, each AI tool gives 3 free uses a month and the device holds up to 25 surveys. Pro is optional, priced by the stores in US dollars.
Mold inspectors, moisture assessors and restoration contractors
Mold inspection app for US inspectors
DampApp Pro is our mold inspection app for US work: it records moisture readings, temperature and relative humidity in °F or °C, calculates dew point on the device and builds a dated PDF on site, even in a crawl space with no signal.
The EPA says sampling is usually unnecessary where mold is visible, and that with no federal limits for mold or mold spores, a sample cannot show compliance with a federal standard. That puts the weight of a mold report on the moisture source: where the water comes from, how wet the materials are and why surfaces are condensing. Each reading stays with its location and photo, so your conclusion rests on what you measured.
Licensing is a state matter. Texas and New York, for example, license mold assessment and remediation, and New York bars the same person from assessing and remediating the same property. Check your state before you take the job.
What DampApp Pro records
- Temperature and humidity in °F or °C, with dew point
- Moisture readings mapped up each wall (Pro)
- Ventilation testing and condensation checks
- Photos with EXIF-derived capture times
- Post-remediation visits that start from earlier readings
Home inspectors and property inspectors
Home inspection software in the US
For residential work, PropertySurvey Pro records a home inspection room by room, pins defects to a floor plan with photos and produces the PDF before you leave the property.
State rules shape the report more than any national code. Whether you need a license, what your standards of practice require and what you must exclude depend on the state, and building codes are adopted locally. Say up front what you inspected, what you could not reach and what sits outside a visual inspection.
Two tests often sit outside it. The EPA says all homes should be tested for radon, and for most housing built before 1978, sellers and landlords must disclose known lead-based paint and its hazards. Note plainly when neither was part of your inspection.
What PropertySurvey Pro records
- Condition ratings room by room, with numbered photos
- Defects pinned to floor plans
- AR room scanning on LiDAR iPhones and iPads
- Scope, access limits and exclusions in the report
- AI Polish drafts from your shorthand, which you edit
Due diligence consultants and property managers
Property condition assessments and lease-end reports in the US
For commercial and multifamily due diligence, PropertySurvey Pro helps you structure a property condition assessment in line with the ASTM E2018 baseline process: site, building systems and representative units, with photos, observed condition and cost notes in US dollars.
ASTM E2018-24 is a voluntary guide, not a legal requirement, and it is led by scope. Record roof access limits, mechanical rooms you could not enter and the units you sampled, because limitations matter as much as defects. The app helps you structure the report; it is not certified or endorsed by ASTM International.
Lease-end condition reports and move-in and move-out records for multifamily turnover use the same workflow, with dated photos ready for any dispute.
What PropertySurvey Pro records
- Site, building systems and unit observations
- Each observation tied to its location and photo
- Cost notes in US dollars
- Move-in and move-out records with matching photos
- White-label PDF reports (Pro)
Public housing agencies, owners and maintenance contractors
Mold and moisture evidence for US public housing
HousingSurvey Pro suits public housing agencies, owners of HUD-assisted properties and their maintenance contractors who need mold and moisture evidence across many units. Maintenance staff log geo-stamped, tamper-evident observations offline, unit by unit, and the office portal follows each one through its work order to reinspection.
HUD's NSPIRE standards include a Mold-Like Substance standard alongside standards for water leaks and HVAC. HousingSurvey Pro is not a HUD inspection tool and does not produce an NSPIRE score or finding; it keeps the evidence your team uses to prepare for inspections and close out repairs. Agencies can begin on a free Solo plan, and staff sign in through the organisation's subscription.
What HousingSurvey Pro records
- Photos and wall moisture readings, geo-stamped
- Hash-chained, tamper-evident evidence records
- Work orders and reinspections linked to the first report
- API, webhooks and EDI into housing systems
Rules that shape the report
Laws, standards and regulators in the United States
US Environmental Protection Agency (EPA)
Mold Testing or Sampling
No EPA or other federal limits have been set for mold or mold spores, so sampling cannot show compliance with a federal standard. Sampling should be designed by experienced professionals.
Official sourceASTM International
ASTM E2018-24, Standard Guide for Property Condition Assessments
A reasonable baseline process for property condition assessments, intended for voluntary use. The guide itself says more or less comprehensive assessments may suit a client.
Official sourceUS Department of Housing and Urban Development (HUD)
National Standards for the Physical Inspection of Real Estate (NSPIRE)
The inspection standards for covered HUD housing, set out by unit, inside and outside areas, including a Mold-Like Substance standard.
Official sourceUS Environmental Protection Agency (EPA)
Lead-Based Paint Disclosure Rule
Sellers, landlords and their agents must disclose known lead-based paint and its hazards before a buyer or renter signs, for most housing built before 1978.
Official sourceUS Environmental Protection Agency (EPA)
Radon
Testing is the only way to know a home's radon level, and the EPA says all homes should be tested. A visual inspection cannot measure it.
Official sourceTexas Department of Licensing and Regulation (TDLR)
Mold Assessors and Remediators
Licenses and registers mold assessors, remediators and mold analysis laboratories in Texas, and publishes consumer information on mold in rental housing.
Official sourceNew York State Department of Labor
Mold Program
Enforces Article 32 of the New York Labor Law: licensing and minimum work standards for mold assessment and remediation, with the same individual barred from assessing and remediating the same property.
Official sourceOn site in the United States
What surveyors meet on site
Crawl spaces and air-conditioned surfaces in humid states
In the Gulf and Southeast, warm, humid air meets surfaces cooled by air conditioning, ductwork and crawl space floors. Record outdoor and indoor humidity, surface temperatures and the dew point so condensation is shown, not assumed.
Attic condensation and ice dams in cold states
Warm air leaking into cold attics frosts the roof deck and feeds ice dams at the eaves. Photograph the attic, the bypasses you can see and any staining below, and note snow cover that limited the exterior inspection.
Water damage after storms and leaks
Flooding, roof leaks and burst pipes are the usual start of mold. Record when the water arrived, how far it spread and what has dried, because the EPA timeline for drying is 24 to 48 hours.
Hidden leaks in multifamily buildings
Condensate lines, stacked bathrooms and water heaters leak behind finishes and between units. Moisture readings mapped room by room show where the water travels, which helps the right trade open up the right wall.
More guides for the United States
Run a real survey on the free tier
DampApp Pro and PropertySurvey Pro can be used without an account or card. The free tier supports full offline surveys, watermarked PDF export, 3 free uses a month of each AI tool and a reusable on-device capacity of up to 25 surveys. Export or delete completed work to free a slot.
Pro is optional and adds cloud sync, greater storage, the full AI allowance, premium integrations and white-label branding. Eligible new subscribers start Pro with a free trial. Review the current entitlements, free trials and store prices on the ProSurvey pricing page.
Survey app questions from the United States
Is there a free mold inspection app?
Yes. DampApp Pro has a free tier that runs complete mold and moisture inspections offline on iPhone, iPad and Android. Reports export as watermarked PDFs, each AI tool includes 3 free uses a month, and up to 25 surveys stay on the device. Upgrading to Pro is optional, with US dollar pricing in the App Store and Google Play.
Can I record temperatures in Fahrenheit?
Yes. DampApp Pro takes temperature and relative humidity in °F or °C and calculates the dew point on the device, so you can show why moisture is condensing on a cold surface. PropertySurvey Pro prepares cost notes in US dollars.
Does PropertySurvey Pro follow ASTM E2018?
It helps you structure a property condition assessment in line with the ASTM E2018 baseline process, with observations, photos and cost notes in US dollars. It is not certified or endorsed by ASTM International, and E2018 itself is a voluntary guide, so you agree the scope with your client.
Do I need a license to inspect homes or mold?
It depends on the state. Home inspector licensing and standards of practice are set state by state, and some states, such as Texas and New York, license mold assessment and remediation separately. Check your state licensing board before you take on the work.
Does it work offline in crawl spaces and basements?
Yes. You can capture readings and photos, run dew point checks and export the PDF with no signal at all. If you subscribe to Pro, cloud sync uploads the work once you are back in range.
Is HousingSurvey Pro an NSPIRE inspection tool?
No. HousingSurvey Pro is not a HUD inspection tool and does not issue NSPIRE scores or findings. It keeps geo-stamped, tamper-evident mold and moisture evidence, work orders and reinspections for a housing provider's own records.
Does the app diagnose mold for me?
No. The apps record your readings and photos, and AI Polish only turns your shorthand into draft wording you edit. The inspector makes every judgement and reviews the report before it goes out.
Not in the United States? Choose your country
Start your next survey in the United States free
Download the app that fits your work, run a real survey offline and hand over the PDF on site. Pro is optional, with a free trial first.
Compare prices and free trials on the pricing page.