Buying an Older Home Checklist: What to Check

Short answer: Buying an older home goes best when you check the build year first, then match your questions and inspections to it. This checklist walks through each stage, from the listing to the first month after closing, and links to the official source behind every rule or date, such as the federal lead disclosure rules for homes built before 1978.

Step one for any older house: see what is typical for its build year. Open the House Age Decoder with 1950 loaded →

Before you make an offer

The listing and a walk-through can tell you a lot before you commit to anything.

Confirm the year built. Listing dates can be estimates. County assessor records and permits are better; see how to find out when your house was built.
Run the year through the decoder. The House Age Decoder lists the materials and systems typical for that year, with a source for each date.
Ask about past renovations. A 1950 house with a 1995 kitchen and new wiring is a different house from one that is all original. Ask what was updated, when, and whether there were permits.
Look at the obvious things. Note the type of siding, any textured ceilings, the electrical panel if visible, exposed pipes in the basement and the type of attic insulation if you can see it from the hatch.
Call an insurer early. Older homes can be harder or costlier to insure, and some wiring and plumbing types affect eligibility. Our guide to home insurance for older homes explains what insurers look at.

When you write the offer

Include an inspection contingency. HUD’s buyer notice suggests requesting an inspection early so you may be able to make the contract contingent on the results. Your agent or attorney can explain how contingencies work in your state.
Remember the appraisal is not an inspection. HUD states that an appraisal estimates value for the lender and does not replace a home inspection, and that FHA does not guarantee the value or condition of the home.
For homes built before 1978, expect the lead paperwork. Sellers must disclose known lead-based paint and hazards, provide available records, give you the EPA pamphlet “Protect Your Family From Lead in Your Home” and include a Lead Warning Statement in the contract. Buyers get a 10-day period to conduct a lead inspection or risk assessment, which can be changed by written agreement or waived. See our lead paint disclosure guide.

During the inspection period

This is when the build year matters most. A general inspection is a visual review; add specialty inspections that fit the house.

Radon test for every house. EPA and the Surgeon General recommend testing all houses, according to HUD’s buyer notice. EPA estimates about 21,000 radon-related lung cancer deaths a year.
Lead, if built before 1978. HUD’s national survey estimates lead-based paint is present in 85% of homes built before 1940, 61% from 1940 to 1959 and about 24% from 1960 to 1977.
Water, if built before 1986. EPA says homes built before 1986 are more likely to have lead pipes and that a lead service line is typically the largest source of lead in drinking water. Ask the utility about the service line and consider a lab test.
Private well, at any age. EPA notes private wells are not regulated by the federal government under the Safe Drinking Water Act. Get the water tested.
Electrical, for certain eras. Knob-and-tube wiring was common from about 1880 to the 1940s; aluminum branch wiring was mainly installed from the mid-1960s to the mid-1970s. Either is a reason for a licensed electrician’s evaluation.
Sewer camera, for older lines. Orangeburg pipe was used in some areas from roughly the early 1950s to early 1970s. A camera shows what runs to the street.
Asbestos, if you plan to renovate. EPA lists products such as floor tiles, textured ceilings, pipe wrap and siding that may contain asbestos. Have suspect materials tested by an accredited professional before any work.
Buried oil tank, if the house has or had oil heat. EPA says residential heating oil tanks used on the premises are excluded from federal UST rules but may be regulated by states or localities.

Our guide to specialty inspections by build year explains who does each one.

Questions to ask

The home inspector

What is included in your inspection and what is excluded?
Based on the year built, what specialty inspections would you add?
Did you see anything that suggests original wiring, pipes or insulation from an older era?
Which findings would you call safety issues versus normal wear?

The seller

When were the roof, wiring, plumbing, sewer line and heating system last replaced?
Were permits pulled for major work? Can I see them?
Have any tests been done for radon, lead, asbestos, water or sewer? Can I see the reports?
Is there, or was there ever, a buried oil tank?
For pre-1978 homes: do you know of any lead-based paint or hazards, and do you have records?

Your insurance company

Will the wiring type, panel brand, plumbing material or roof age affect coverage or premium?
Do you need an electrician’s or plumber’s evaluation before binding coverage?
Are there exclusions I should know about for older homes?

Your lender

What does the appraisal cover, and could any repairs be required before closing?

Before closing

Read every report in full, not only the summary page.
Decide what to negotiate. Repairs, credits or price changes are business decisions between you and the seller. Ask your agent or attorney about options and deadlines.
Get repair paperwork. If the seller agrees to fix something, ask for invoices, permits and the contractor’s details.
Lock in insurance. Make sure your policy is bound and you understand any conditions.
Keep copies of disclosures, inspection reports and test results. Sellers must keep signed lead disclosures for three years; you should keep yours too.

After you move in

Plan renovations around what you learned. Do not sand, scrape, cut or drill materials that may contain asbestos or lead until they are tested. EPA advises leaving undamaged asbestos material alone and using accredited professionals for sampling and removal.
Leave electrical work to a licensed electrician. This site does not give instructions for electrical work.
Ask a radon professional about retesting if you make major changes, such as finishing a basement.
Keep a house file with the year built, materials found, test results and every repair. It will help with insurance claims and an eventual sale.

Common mistakes with older homes

Treating the listing year as fact. Confirm it with public records.
Skipping the sewer line. It is buried and outside the general inspection’s scope.
Waiving the lead testing period without thinking. It is the buyer’s chance to evaluate lead hazards before committing.
Calling the insurer after the inspection period ends. Coverage problems are easier to handle while you can still negotiate.
Starting demolition before testing. Many older materials are only a risk once disturbed.

Quick answers

How old is an “older home”?

There is no official definition. For the materials on this site, the key cut-offs are 1978 (lead paint), 1986 (lead-free plumbing) and the asbestos dates in our asbestos timeline.

Is an older home a bad investment?

Not necessarily. It means more questions and possibly more evaluations up front. This guide does not give financial or legal advice.

Buying an Older Home: A Checklist by Stage and Build Year