A showing is usually twenty minutes, and most of it gets spent on finishes. Countertops, paint colour, the fixtures. Those are the easiest things to change and the least useful things to evaluate.

What is worth your attention is the part that is expensive or impossible to change later.

Start Outside

Walk the perimeter before going in. It takes three minutes and it frames everything else.

  • Grading. Does the ground slope away from the foundation or toward it? Water directed at a foundation is the origin of a large share of basement problems.
  • Gutters and downspouts. Are they intact, and do the downspouts discharge away from the house or straight down beside it?
  • Foundation. Hairline cracks are common. Horizontal cracks, stepped cracking in block, or anything you can fit a coin into is worth asking about.
  • Roof. Look for missing or cupped shingles, patched sections, and sagging along the ridge line. Ask the age.
  • Siding and trim. Soft or rotted wood around windows and at the base of walls indicates a moisture path.
  • Trees. Large limbs over the roof and mature trees close to the foundation both have cost attached.

The Basement

On Long Island this is where the story gets told. Give it real time.

  • Look at the bottom six inches of the walls for staining, efflorescence, or a distinct waterline.
  • Note whether stored items are raised off the floor. People who have had water tend to keep things elevated.
  • Check for a sump pump. If there is one, look at whether the pit is wet and whether the pump looks used.
  • Smell the air. Musty is a signal that does not appear in photographs.
  • If it is finished, ask whether it was permitted, and whether the certificate of occupancy reflects it.

Finished basements deserve a specific question. A basement finished without a permit is common, and it affects both the recorded square footage and what happens when the property is eventually resold. Ask early rather than discovering it later.

Systems and Their Age

Nearly every piece of major equipment has a data plate with a manufacture date. Find them and photograph them.

  • Heating. Furnace or boiler, and what it runs on. Gas, oil, or electric changes the operating picture.
  • Oil tank. Where is it? An above ground tank in the basement is straightforward. An underground tank, or evidence of a decommissioned one, is a subject to raise with your attorney.
  • Water heater. Typical service life is a bit over a decade. The date is on the label.
  • Air conditioning. Central air, mini splits, or window units. Check the outdoor condenser date.
  • Electrical panel. Look at the service size and whether the panel is modern breakers or older fuses.
  • Plumbing. Look under sinks for corrosion and staining, and note the supply pipe material where it is visible.

Run the Water

People feel awkward doing this. Do it anyway.

Turn on a tap and let it run. Flush a toilet and run a second fixture at the same time to see what happens to pressure. Look under every sink you can open. Check for slow drains. These take seconds and they surface problems that a walkthrough otherwise misses entirely.

Windows and Doors

Open a few. Windows that stick, do not stay open, or have fogging between the panes all indicate either age or a settling issue. Doors that will not latch cleanly, or that swing on their own, can point to something structural.

Layout and How It Actually Works

Finishes change. Layout mostly does not.

  • Where is the laundry, and does that location work for how you live?
  • Is there a full bathroom on the main level?
  • How do you get groceries from the car to the kitchen?
  • Do bedrooms open onto shared walls with living space?
  • Is there storage, and where?

Local Things Worth Checking

Some items come up repeatedly in this market and are worth adding to your list.

  • South Shore flood exposure. Much of the South Shore of Nassau and Suffolk County sits in a mapped flood zone. Check the property address against the FEMA flood map before you get attached to it.
  • Oil versus gas heat. Older Long Island properties frequently run on oil. Ask where the tank is and whether it is above ground, in the basement, or buried in the yard.
  • Septic versus sewer. Large parts of Suffolk County are on private septic rather than municipal sewer.
  • Co-op versus condo. In Queens, Brooklyn, and the Bronx this distinction changes what you are actually buying and what the building can require of you.
  • Permits. Finished basements, decks, and dormers are common across Nassau County and frequently unpermitted.

Go Back at a Different Time

Most showings happen midday on a weekend, which is the quietest a property will ever be.

Drive by on a weekday evening. Note traffic on the street, noise, parking availability, and how the light falls at a different hour. Properties near the Long Island Rail Road, the Southern State or Sunrise Highway, or an elevated subway line in Queens or the Bronx present very differently at four in the afternoon than at eleven on a Sunday.

Things Worth Looking Up Separately

Some questions are answered better by public records than by a walkthrough.

  • Flood zone. The FEMA Flood Map Service Center covers this, and it is relevant across a lot of the South Shore.
  • Permits and certificate of occupancy. Held by the local building department. These are public records available through a Freedom of Information Law request.
  • Radon. The EPA publishes guidance on testing. It is inexpensive to test for.

What Not to Weigh Too Heavily

Paint colour, carpet, light fixtures, cabinet hardware, staging furniture, and landscaping are all changeable, often cheaply. It is easy to reject a structurally sound property over a colour and easy to fall for a cosmetically updated one with an aging roof and a wet basement.

The rule that holds up: weight what is expensive to change, discount what is not.

Take Notes

After three or four showings, properties blur. Photograph the data plates, the panel, the basement walls, and anything you want to ask about later. Write down the address and one line on what stood out. It sounds excessive until the fifth property.

Common Questions

What should I check first when touring a home?

Start outside. Look at how the ground slopes around the foundation, the condition of the roof and gutters, and whether there is visible cracking or staining on the exterior. These tell you more about future expense than anything inside.

How can I tell the age of major systems?

Most equipment carries a data plate with a manufacture date. The furnace, boiler, water heater, and outdoor air conditioning unit all have one. Photograph them. Knowing whether something is five years old or twenty five changes how you think about a property.

Should I be worried about a finished basement?

Not automatically, but ask two questions. Was it permitted, and is there any sign of water. Look at the base of the walls, check whether flooring is raised off the slab, and note whether there is a sump pump and whether it looks like it runs.