A winter home inspection trades some things for others. Snow can cover the roof, the grade, the steps and the hatches that the State’s Standards of Practice ask an inspector to look at, and the Standards say the inspector is not required to move snow or ice. Cold also does what summer cannot: it puts the heating system, the attic and the plumbing under real load. Knowing which is which lets a buyer plan the follow-ups and lets a seller get the house ready.
Inspecwise is a home inspector licensed by New York State, certified by InterNACHI and based in South Ozone Park, Queens; this is our guide to inspecting in cold weather. Below: what snow and ice hide, how often the ground is actually covered in New York (NOAA’s 30-year normals), what cold weather shows, how ice dams and frozen pipes are read, and what to ask your attorney about timing.
Winter home inspection: what snow and ice hide
The Standards are written around what is “readily accessible” and “observable”, and they list what the inspector need not do. In winter several of those limits come into play at once. The inspector is not required to move personal property, furniture, equipment, plants, soil, snow, ice or debris, and an item that is concealed or not readily accessible need not be observed. When something is not observed, the inspector must list it in the report with the reason (197-5.3).
| Component | What snow, ice or cold can do | What the Standards say |
|---|---|---|
| Roof coverings and flashing | Snow or ice covers the surface, and the roof may be unsafe to walk | Not required to walk on or access a roof where that could damage it or endanger the inspector; the report must state the method used to observe the roof (197-5.7) |
| Grade and drainage at the foundation | Snow hides the slope, the splash blocks and gutter outlets | Observe grade and water drainage beside the foundation (197-5.4); not required to move snow or ice |
| Walkways, steps, driveways, decks | Ice and snow cover cracks, settlement and deck surfaces | Observe adjacent walkways, patios and driveways (197-5.6) |
| Attic access and hatches | Hatches freeze shut or are blocked; the attic may be unsafe to enter | Observe a safe, readily accessible attic; not required to enter where entry would be unsafe (197-5.15) |
| Central air conditioning | Not run in cold weather | Not required to operate equipment if the exterior temperature is below 65 degrees F (197-5.11) |
| Heat pumps and other equipment | Cold can damage equipment run out of season | Not required to activate heating, heat pump or any other system when ambient temperatures may damage the equipment (197-5.10) |
That does not make a January inspection second best. It makes it different. The roof surface and the grade are the two things a buyer should plan to see again once the snow is gone; the heating system and the attic in cold weather are two things winter shows better than July does.
How often is the ground covered? NOAA’s normals for New York
Before deciding how much snow matters, it helps to know how often it is there. NOAA’s National Centers for Environmental Information publish 30-year climate normals (1991 to 2020) for each weather station. The table uses the annual normals for five stations around the region. A station is a point, not a borough, and a normal is an average over thirty winters, not a forecast for this one.
| Station | Snowfall (in. a year) | Days with 1+ in. snow depth | Days with 5+ in. snow depth | Days with a low at or below 32 F | Days with a high at or below 32 F | Days that cross freezing |
|---|---|---|---|---|---|---|
| Central Park (Manhattan) | 29.8 | 24.2 | 11.1 | 67.3 | 16.0 | 51.3 |
| LaGuardia Airport (Queens) | 29.8 | 21.3 | 8.0 | 61.9 | 14.4 | 47.5 |
| JFK Airport (Queens) | 25.9 | 20.0 | 7.4 | 74.0 | 14.2 | 59.8 |
| Islip MacArthur Airport (Suffolk) | 31.8 | 22.7 | 9.5 | 98.3 | 16.4 | 81.9 |
| Westchester County Airport | not in file | not in file | not in file | 104.7 | 23.0 | 81.7 |
Source: NOAA NCEI 1991-2020 Annual/Seasonal Normals, station files for the stations shown; the last column is our subtraction (days with a low at or below 32 F minus days with a high at or below 32 F). Islip’s snowfall normal is flagged provisional by NOAA, and the Westchester County Airport file has no snow values.
Read it plainly. At Central Park the ground normally has at least an inch of snow on about 24 days a year and at least five inches on about 11. At all five stations the temperature normally dips to freezing or below on roughly 62 to 105 days a year, and on about 48 to 82 of them it climbs back above freezing the same day. The City’s Department of Buildings notes that freeze-and-thaw weather cycles deteriorate homes and outdoor structures. At these stations snow cover is a matter of weeks, not months, which is why a spring follow-up is realistic.
What a winter home inspection shows better than a summer one
Heating
The Standards have the inspector operate the heating system with the thermostat, describe the fuel, equipment and distribution system, report on controls, visible flue pipes and dampers, and report on the condition of a representative number of heat sources in each habitable space. In January the thermostat is really calling for heat, so a cold radiator, a weak register or a short-cycling boiler is easier to catch. The Standards stop short of judging efficiency or capacity, and the inspector is not required to observe the interior of chimney flues or heat exchangers. The Department of Buildings’ own winterizing tips ask owners to have heating equipment cleaned and serviced yearly by a qualified individual and the chimney cleaned and checked once a year, and say attic insulation of at least six inches helps prevent heat loss; that is City guidance, not a code citation. For the boiler types common in New York houses, see our guide to heating system inspections.
Drafts and heat loss
The Department of Buildings says that loose-fitting windows and doors can be major sources of heat loss and that most heat leaves a house through the roof. Drafts are felt, not measured, and the Standards do not ask the inspector to evaluate the efficiency of a system, but a visit in cold weather lets the inspector note windows that do not close, doors that leak and rooms that stay cold, and put them in the report.
Ice dams and attic frost
Ice dams are covered in the next section. In the attic, cold weather lets the inspector see frost on the underside of the roof deck or on nail tips, which a July visit cannot show, along with any damp insulation. The Standards have the inspector describe insulation and ventilation in accessible attics and say the inspector is not required to disturb insulation or to determine the cause of a condition, so the report describes what is visible and a specialist in attic insulation and ventilation answers the “why”.
Frozen and burst pipes
NYC Department of Environmental Protection says most pipes and water meters are in basements, crawl spaces and other unheated areas where cold can freeze them, and that repair of a frozen, broken service line or pipe is the homeowner’s responsibility, by a licensed master plumber. Those are the same unheated spaces where an inspector sees exposed piping. The Standards require the inspector to observe active leaks and visible plumbing, not pipes inside walls. Ask the seller about past freeze damage; the State’s disclosure form asks about rot or water damage to the structure and about known defects in the plumbing system. Electrical de-icing tapes, often called heat tape, are on the Standards’ list of things the inspector need not observe.
Alarms, and what an inspection does not test
Ready.gov lists carbon monoxide poisoning among the risks that winter storms raise. The Standards have the inspector report the presence or absence of smoke and carbon monoxide detectors; they do not require the inspector to test for gas leaks or carbon monoxide. Ready.gov’s winter advice is to install and test alarms with battery backups and never to heat a home with a gas stovetop or oven. Our guide to carbon monoxide alarms in New York homes covers the State’s rules, and the older chimney inspection guide covers flues.
Heating fuel across New York City, Nassau, Suffolk and Westchester
How a house is heated changes what a winter visit looks at. Oil means a tank and a burner; gas means a meter and a flue; electricity means a different set of questions. The Census Bureau’s American Community Survey counts the main heating fuel of every housing unit, apartments included.
| Area | Utility gas | Fuel oil | Electricity | Built before 1940 |
|---|---|---|---|---|
| Queens | 74% | 10% | 10% | 30% |
| Brooklyn | 72% | 7% | 14% | 47% |
| The Bronx | 52% | 21% | 18% | 33% |
| Manhattan | 49% | 15% | 28% | 43% |
| Staten Island | 85% | 4% | 7% | 18% |
| Nassau County | 62% | 26% | 7% | 19% |
| Suffolk County | 41% | 44% | 9% | 9% |
| Westchester County | 52% | 28% | 14% | 28% |
Source: US Census Bureau, American Community Survey 2020-2024 five-year estimates, county tables; percentages are rounded survey estimates of all housing units, not just houses, and the rest use other fuels or none. The spread is wide. About 44% of Suffolk homes are heated with oil, against about 4% on Staten Island. Where there is oil there is a tank, and our oil tank inspection guide explains what can and cannot be seen. Older housing adds its own winter questions; see pre-war home inspections.
Ice dams, icicles and what the evidence can tell you
NDSU Extension says that ice dams and icicles are most common when snow is on the roof, heat is being lost through the roof and outdoor temperatures are just below freezing. A Massachusetts state fact sheet adds that most ice dams form when heat loss into the attic warms the underside of the roof sheathing, so snow melts and the water refreezes at the cold edge, and that water leaks from ice dams can damage wall insulation and add moisture problems. Both point at the attic, not the eave. NDSU says the cause is found by looking inside it, and that the key is enough attic insulation and ventilation to keep the roof near outdoor temperature; it also warns against treating symptoms with heat tape.
What an inspector can do is narrow. The report can describe icicles and ice at the eaves, stains on ceilings and walls below, damaged soffits and wet insulation, and what the attic looks like. It cannot say how the roof will behave next winter, because the Standards do not require the inspector to determine the future condition of a system, or why the heat is escaping. Roof questions go to a roofer; attic air-sealing and insulation questions go to an insulation contractor. Our guide to roof inspections in New York covers the roof itself.
Two safety points. The Department of Buildings says snow and rain on roofs can cause leaks or compromise a building’s structural integrity if the weight becomes too great, and tells owners to remove snow from roofs and drains regularly. The Massachusetts sheet says not to get on the roof or chip at ice from the ground. Neither is a job for a buyer’s inspection day.
Buying in winter: scheduling and questions for your attorney
A winter buyer can have both speed and completeness if the plan is made up front.
- Tell the inspector what you most need seen. If the roof is the big-ticket item, say so before the day. The report must state the method used, and an item that was snow-covered will be listed as not observed with the reason.
- Plan a spring follow-up for what was covered. Roof surfaces, grade, steps and decks are the usual list. Ask the inspector whether a short return visit is possible.
- Ask your attorney about the contract. Questions worth raising: whether the inspection contingency allows a follow-up for components that were not observed because of snow or ice; what happens if a defect is found after the thaw; who keeps utilities and heat on until closing; and how a freeze between contract and closing would be handled. These depend on the contract, and we do not give legal advice. See home inspection contingency.
- Ask the seller for records. Roof age and repairs, boiler service, oil deliveries, and any freeze or leak history. The State’s disclosure form asks about water damage and plumbing defects and must be delivered before you sign a binding contract of sale; see property condition disclosure.
- Use the final walk-through. A thaw can reveal a leak that was frozen on inspection day. See the final walk-through guide.
Selling in winter: get the house ready
A seller can remove most of winter’s limits. Clear a path to the entrance and to the yard side of the house, shovel steps and the area at the foundation where you can safely reach, and clear the way to the attic hatch, the boiler or furnace, the water heater and the electrical panel. The Standards say a readily operable access panel, the kind provided for homeowner maintenance, must be within normal reach and not blocked by stored items, furniture or building components, and the inspector is not required to move any of them. Keep the heat on and the water and power connected on the day, and leave records out: boiler service, roof work, oil tank paperwork, and any permits. Our guide to how to prepare for a home inspection has the general checklist and the inspection process shows how the visit runs.
A worked example
An illustration, not a case we handled: a 1925 two-family in Queens with a steam boiler is inspected in January with four inches of snow on the ground and ice at the eaves. The boiler runs and the radiators on the second floor stay cold; the report records both. The roof is described as not observed because of snow cover, with the method used. The yard-side grade is listed as not observed. In the attic the inspector sees frost on the roof deck and describes it. The buyer’s attorney had asked for a follow-up clause, so the roof and grade are re-checked in April, after the thaw. The January visit found what January shows, and April finished the list.
Questions about a winter home inspection
Can you get a home inspection when there is snow on the ground?
Yes. The inspection goes ahead, and the report lists anything snow or ice made impossible to observe, with the reason. The Standards say the inspector is not required to move snow or ice, so roofs, grade and steps may be partly or wholly unobserved.
Will the inspector walk on a snow-covered roof?
Not if it could damage the roof or endanger the inspector. The Standards allow the inspector to skip walking on or accessing a roof for those reasons, and the report must state the method used to observe the roofing.
Is the air conditioning tested in winter?
Not if the outside temperature is below 65 degrees Fahrenheit. The Standards do not require the inspector to operate air conditioning equipment in cold weather, so a spring check is worth asking about.
Can an inspector tell me if the house has ice dam problems?
Only the signs: ice and icicles at the eaves, stains below, wet insulation, and what the attic looks like. The Standards do not require the inspector to determine the cause or the future condition. The cause is usually heat escaping into the attic, which an insulation specialist can assess.
Does a home inspection check for carbon monoxide?
No. The Standards say the inspector is not required to test for gas leaks or carbon monoxide. The report states whether smoke and carbon monoxide detectors are present or absent.
Should I ask for a second visit in spring?
If the roof, grade or steps were covered and they matter to your decision, yes, and raise it with your attorney before the inspection contingency expires. A follow-up is a practical way to finish the inspection without waiting a year.
About the figures
Weather figures are NOAA NCEI 1991-2020 annual normals for the stations named. Heating-fuel and housing-age figures are US Census Bureau American Community Survey 2020-2024 five-year estimates for the counties named. Other numbers are attributed in the text.
Booking a winter inspection
If you are buying in the cold months, tell us at booking which parts of the house you most need to see, and we will say plainly what snow or ice is likely to hide. The report lists anything we could not observe and why. We travel from South Ozone Park to the boroughs, Nassau, Suffolk and Westchester, and to other areas by arrangement, and you can speak with us in English, Urdu, Punjabi or Hindi.
Call 718-925-7071 with questions before you book.