Buying an Older Home in the Denver Metro Area? 5 Things to Look For

There is an undeniable magic to the historic and mid-century neighborhoods winding through the Denver Metro area. From the classic brick bungalows of Wash Park and the Highlands to the mid-century ranch homes in Arvada and Littleton, older homes offer a level of character, craftsmanship, and mature landscaping that modern builds just can’t replicate.

However, buying a vintage piece of the Front Range means inherited history and sometimes, inherited headaches.

Before you fall head over heels for original hardwood floors and antique built-ins, here are 5 critical things to look for when evaluating an older home in the Denver Metro area.

1. The Subterranean Trap: Clay and Cast Iron Sewer Lines

In many of Denver’s older neighborhoods, what lies beneath the ground is just as old as the house itself. Homes built prior to the 1970s frequently rely on sewer laterals made of clay tile, cast iron, or even Orangeburg (compressed wood fiber and tar).

• The Issue: Over decades, clay pipes shift, causing joints to separate. Denver’s beautiful, mature trees send roots searching for moisture, which inevitably break into these gaps and cause massive blockages or full structural collapses. Cast iron, on the other hand, corrodes from the inside out.

• The Fix: A standard home inspection won’t catch this because the lines are buried. We always recommend adding a sewer scope inspection. Catching a failing line early can save you from a $5,000 to $15,000 excavation surprise later.

  
  

2. Shifting Ground: Expansive Clay Soils and Foundations

Colorado is infamous for its expansive bentonite clay soil. This type of soil acts like a sponge, expanding significantly when wet and shrinking drastically when dry.

• The Issue: Decades of this expanding and contracting cycle put immense pressure on older foundations. While small, vertical hairline cracks in a concrete basement are usually just normal settling, horizontal cracks, stair-step cracks in exterior brick, or uneven, sloping floors are major red flags that indicate possible structural movement.

• What to look for: Check the grading around the exterior. The ground should slope away from the house at least six inches over the first ten feet to keep water from pooling against the foundation.

  
  

3. Electrical Systems of Older Homes

As technology has evolved, so have our power needs. An older home's electrical grid was built for a few lamps and a radio, not high-powered modern appliances, smart home setups, and EV chargers.

• The Issue: Homes built before the 1950s may still have active knob-and-tube wiring, which lacks a grounding wire and poses a significant fire hazard when covered by modern insulation. Furthermore, mid-century homes often contain outdated electrical panels (like Federal Pacific or Zinsco) that are notorious for failing to trip during an overload.

• What to look for: Look for ungrounded, two-prong outlets throughout the living spaces. Upgrading a whole-house electrical system or replacing an unsafe electrical panel is a substantial investment. Sometimes, the repair can be negotiated before closing.

  
  

4. Colorado Weather Wear: Roof and Hail Damage

The Front Range experiences some of the most volatile weather in the country, characterized by intense UV exposure, heavy winter snow loads, and legendary spring hail storms.

• The Issue: Asphalt shingles take a beating in Colorado. Older roofs may look fine from the curb, but closer inspection often reveals hail bruising, missing granules, or compromised flashing around chimneys and skylights.

• The Impact: A compromised roof can quickly lead to hidden attic mold and structural wood rot.

  
  

5. The Silent Hazards: Radon, Asbestos, and Lead

Older homes often feature building materials and environmental factors that require modern mitigation to ensure your family's safety.

• Radon Gas: Because of the geological makeup of the Rocky Mountain region, Colorado has exceptionally high levels of naturally occurring radon gas. It seeps silently into basements and crawl spaces. Testing is easy, and installing a radon mitigation system is a highly effective, routine fix.

• Lead and Asbestos: If the home was built before 1978, assume lead-based paint is present beneath newer layers. Similarly, homes built before the 1980s frequently utilized asbestos in pipe insulation, acoustic ceiling tiles, and vintage vinyl flooring. These materials are generally safe if left undisturbed, but they require specialized handling during any future renovations.

  
  

The Golden Rule of Buying Vintage: Never let aesthetic charm blind you to structural realities. Buying an older home is a rewarding journey, provided you walk into the investment with your eyes wide open.

Let Maple Home Inspections, LLC Give You Peace of Mind

At Maple Home Inspections, LLC, we love the character of Denver's historic properties as much as you do. Our job is to give you the clear, unbiased data you need to buy with confidence. From home inspections to radon testing, we provide you with information for a more informed decision.

Ready to inspect your future Denver home? Reach out to Maple Home Inspections, LLC today to schedule your inspection!