Maryland has a lot of wonderful older housing, from Baltimore rowhomes to historic properties across the region. But older homes often come with older electrical systems, and electrical issues are among the most common and most expensive problems buyers discover. A careful look at the electrical system before you buy can save you from costly surprises and safety hazards.

Here are the electrical inspection tips to keep in mind when buying an older Maryland home.

Start with the panel

The electrical panel tells you a lot about a home’s electrical health. During the inspection, pay attention to:

• The brand. Obsolete panels like Federal Pacific Electric (FPE) Stab-Lok and Zinsco are considered fire hazards and often need replacement.
• The capacity. Older homes may have 60 or 100 amp service, which can be undersized for modern needs like central air and EV charging.
• The condition. Rust, corrosion, scorch marks, or a hot panel are serious red flags.
• The labeling. A clear circuit directory reflects a well-maintained system.

Ask about the wiring type

The age of the home hints at what wiring you may find, and some types are concerns:

• Knob-and-tube wiring, common in homes built before 1950, is ungrounded and can be a safety and insurance issue.
• Aluminum branch wiring, used in many homes from the mid-1960s to mid-1970s, can loosen and overheat at connections if not properly corrected.
• Cloth or rubber-insulated wiring can become brittle and unsafe with age.

An inspector or electrician can identify accessible wiring and note anything that warrants a closer look.

Check the outlets

Outlets reveal a lot about a home’s wiring:

• Two-prong outlets indicate ungrounded wiring, common in older homes.
• Missing GFCI protection in kitchens, bathrooms, garages, and outdoors is a frequent finding.
• Reversed polarity or open grounds are wiring faults a simple outlet tester can reveal.
• Loose, warm, or discolored outlets point to connection problems.

Watch for signs of amateur or unpermitted work

Older homes often accumulate decades of do-it-yourself changes. Warning signs include open junction boxes, exposed splices, a tangle of extension cords used as permanent wiring, mismatched or double-tapped breakers, and work that looks improvised. Unpermitted electrical work is a common issue in older homes and can create both safety and resale complications.

Consider the insurance angle

Some older wiring, particularly active knob-and-tube, can make a home difficult or expensive to insure, and some insurers decline coverage. Since you generally need insurance to get a mortgage, this is worth confirming before you buy, so you can budget for updates and avoid coverage surprises at closing.

Get an electrician’s evaluation for red flags

A general home inspection is a valuable starting point, but it is not a substitute for an electrician’s assessment when red flags appear. If the inspection turns up an obsolete panel, aging wiring, or signs of hazards, having a licensed electrician evaluate the system gives you a clear picture of the scope and cost. That information is powerful during negotiation, whether you ask for repairs, a credit, or a price adjustment.

Before buying an older Maryland home, look closely at the panel, ask about the wiring type, check the outlets for grounding and GFCI protection, watch for amateur or unpermitted work, and confirm the insurance situation. When red flags appear, get a licensed electrician’s evaluation so you know the scope and cost before you commit. A little diligence upfront protects both your safety and your wallet.

Stella Electric performs pre-purchase electrical evaluations for homebuyers across the Baltimore area and throughout Maryland, with flat-rate pricing and no overtime charges. If you are buying an older home, we can tell you what you are getting into. Financing is available on qualifying projects.