What Is a Level 2 Chimney Inspection and
Why Is It Recommended?

The Three Levels of Chimney Inspection

The National Fire Protection Association Standard 211 (NFPA 211) defines three levels of chimney inspection. Understanding what each one covers makes it clear why Level 2 is the right choice when buying a home.

Level 1

The basic annual checkup. Covers accessible portions of the chimney interior and exterior during regular use without any special tools.

• Visual inspection of accessible areas
• Check for basic soundness and clearances
• No video equipment
• Typically done with an annual cleaning
• Not sufficient for a real estate transaction

Recommended for Buyers

Level 2

The standard for any change of occupancy, fuel type change, or after any event that may have affected the chimney. Includes everything in Level 1, plus more.

• All Level 1 items
• Accessible attic, crawlspace, and basement areas
• Video scan of the flue interior
• Called for by NFPA 211 at sale or transfer
• The only way to see inside the flue liner

Level 3

Reserved for situations where a serious hazard is suspected and cannot be confirmed without removing parts of the building or chimney structure.

• All Level 1 and 2 items
• May involve removing portions of the chimney
• Ordered only when Level 2 raises serious concerns
• Rarely needed; more invasive and costly
• Typically follows a fire or major event

The key thing Level 2 adds that Level 1 does not have is the video scan. The flue, which is the interior passageway that vents combustion gases out of the home, cannot be meaningfully evaluated by looking down from the top or up from the firebox. A camera on a flexible rod is the only way to see the liner in detail. That is where the most significant and most expensive defects tend to hide.

What a Level 2 Inspection Actually Covers

Here is a more specific breakdown of what a certified chimney professional evaluates during a Level 2 inspection.

What Level 2 Inspections Commonly Find

Most of what turns up during a Level 2 inspection is not surprising when you consider how chimneys age. Portland-area and SW Washington homes often have masonry fireplaces that are 40, 50, or 60 years old. Clay tile flue liners, which were the standard for most of that era, have a finite lifespan and are vulnerable to cracking from temperature cycling, moisture, and earthquake movement. Here is what comes up most often.

Cracked Flue Tiles

Clay tile liners develop cracks over time from the repeated expansion and contraction of heating and cooling. A cracked liner does not prevent the fireplace from drawing, but it can allow combustion gases, including carbon monoxide, to migrate into the home rather than venting cleanly to the outside.

Deteriorated Mortar Joints

The mortar between flue tiles and the masonry of the chimney itself breaks down with age and moisture. Gaps in mortar joints allow heat and gases to escape into the chase surrounding the flue, which creates a fire pathway into combustible framing materials.

Creosote Buildup

Creosote is the residue left behind by wood combustion. It builds up in the flue and is flammable. Light buildup is normal and cleaned during a sweep. Heavy or glazed creosote accumulation is a fire hazard and requires more than a standard cleaning to address.

Missing or Deteriorated Chimney Cap

A chimney without a proper cap allows water, birds, and debris into the flue. Water is especially damaging because it accelerates the deterioration of mortar joints and flue tiles. Caps are a relatively inexpensive fix, but the moisture damage they prevent can be costly if left unaddressed.

Flashing Failures

The flashing where the chimney meets the roof is one of the most common leak points in any home. Rusted, cracked, or improperly installed flashing allows water to enter the attic and wall cavities around the chimney chase, sometimes without any visible sign at the fireplace itself.

Liner Sizing Issues

Older homes were sometimes retrofitted with inserts or gas logs that do not match the original flue size. An improperly sized liner reduces draft efficiency and can cause backdrafting, where combustion gases push back into the living space instead of venting outside.

Why a Level 2 Is Specifically Recommended When Buying a Home

The NFPA 211 standard is explicit on this point: it calls for a Level 2 inspection any time a property is sold or transferred. It is an industry standard rather than an Oregon or Washington law, but the reasoning is straightforward. When you buy a home, you have no history with how the fireplace was used, maintained, or modified. The sellers may have burned green wood for years without cleaning the flue. A previous owner may have installed a fireplace insert that was never properly lined. There could have been a chimney fire that the sellers were unaware of, or chose not to disclose, which can cause significant flue damage that looks unremarkable from the outside.

A Level 1 inspection, the kind that happens during an annual cleaning, cannot answer those questions. It covers only what is visible without equipment. The video scan that defines Level 2 is the only reliable way to see the interior condition of the flue before you commit to ownership.

A standard home inspection in Oregon City or anywhere across the Portland metro will note the visible condition of the fireplace and chimney, including the firebox, damper, hearth extension, exterior masonry, and any accessible areas. But home inspectors are not chimney specialists and are not equipped to perform video scans of the flue. The standard recommendation is to follow up with a certified chimney professional for a full Level 2 if the home has any wood-burning appliance. For homes with gas fireplaces, a Level 1 or Level 2 may be appropriate depending on the configuration and age, and your chimney professional can advise.

When Else Is a Level 2 Recommended?

Change of ownership is the most common trigger, but NFPA 211 recommends a Level 2 in several other situations as well:

• After any chimney fire, even one that appeared minor or self-extinguishing.
• After any significant weather event such as an earthquake, lightning strike, or nearby tree strike that could have shifted or cracked the masonry.
• When changing the fuel type, such as converting a wood-burning fireplace to a gas insert, or adding a gas log set. A liner sized for one fuel type may not be appropriate for another.
• When adding or replacing a heating appliance that connects to the chimney, such as a furnace or water heater.

Many chimney professionals also recommend one when a fireplace has not been used in several years and you plan to begin using it again. In the Portland metro and SW Washington, that point is particularly relevant. Many homes in the area have fireplaces that have not been used regularly for years, sometimes because a gas furnace replaced the need for supplemental wood heat, sometimes because the sellers simply preferred not to deal with wood. A fireplace that has sat dormant can accumulate moisture damage, animal nesting, and mortar deterioration that would not be obvious without a camera inspection.

Who Performs a Level 2 Chimney Inspection?

Level 2 chimney inspections are performed by certified chimney sweeps, ideally those holding a Certified Chimney Sweep (CCS) or Certified Fireplace Installer (CFI) credential from the Chimney Safety Institute of America (CSIA). These are the people who have both the video equipment and the training to interpret what it shows.

Home inspectors are not chimney specialists. A good home inspector will give you a clear picture of the visible condition of the fireplace and chimney and flag anything that warrants further evaluation. The detailed internal assessment, however, requires a chimney professional with a camera system. The two inspections complement each other rather than overlap. If your home inspection report recommends a chimney specialist, that is a recommendation worth following before you close, not after.

What Does a Level 2 Chimney Inspection Cost?

In the Portland metro and SW Washington area, pricing for a Level 2 chimney inspection varies widely by company, and quotes for a single flue commonly fall around $250 to $500. Homes with multiple flues, fireplace inserts, or connected heating appliances will be toward the higher end. Many chimney companies bundle the Level 2 inspection with a cleaning, which makes sense to do at the same time.

That cost needs to be weighed against the alternative. Relining a deteriorated flue typically runs $2,500 to $7,000 or more depending on the height of the chimney and the type of liner system used. Repairing significant masonry damage can run higher. A Level 2 inspection gives you accurate cost information before you own the home, which is far more useful than discovering the same problem afterward.

A Note on Gas Fireplaces and Inserts

Not every fireplace in a Portland-area or SW Washington home is a traditional wood-burning masonry unit. Many homes have gas fireplaces, either factory-built direct-vent units or gas inserts retrofitted into an existing masonry opening. The chimney inspection requirements are different for these.

Direct-vent gas fireplaces vent through their own sealed flue system and typically do not require a Level 2 inspection of the main chimney, though the vent termination and sealed components still need evaluation. Gas inserts that vent through the existing masonry flue do warrant a Level 2, because the liner sizing, integrity, and clearances all matter for safe venting. If you are not certain which type is in the home, a chimney professional can identify it quickly during their visit.

What Your Home Inspector Will and Won’t Cover

During a home inspection, the fireplace and chimney are inspected as part of the overall scope of the home. This includes the firebox, damper, smoke chamber, hearth extension, visible exterior masonry, the chimney cap if accessible, and the visible flashing at the roofline. The free thermal imaging included with every inspection can sometimes reveal heat loss or moisture intrusion around the chimney chase that would not otherwise be visible.

What a home inspection cannot do is send a camera down the flue, assess the interior condition of the liner, or evaluate areas inside the chimney chase that require specialty equipment. That is not a limitation of the inspection, it is simply the boundary between a general inspection and a specialty inspection. The right approach is to use both: get the home inspection to understand the overall condition of the home, and schedule a Level 2 chimney inspection for any wood-burning appliance before you close.