Home Inspector Bryn Mawr, PA | Home Inspection & Mold Testing

All Seasons provides professional home inspections and PRO-LAB certified mold testing in Bryn Mawr, Montgomery County. InterNACHI-certified owner-operator Bob personally performs every inspection — 20+ years experience, 4.9 stars on Google, 24-hour reports. Home inspections from $325, mold testing from $290. Call 610-348-6728 for a free estimate.

Bryn Mawr, Montgomery County

What home inspection and mold testing services are available in Bryn Mawr?

Stone-and-stucco houses set back behind old hedgerows, twin and rowhouse blocks tucked in near the tracks, and a dense commercial spine along Lancaster Avenue give Bryn Mawr a housing mix far broader than its estate reputation suggests. The Pennsylvania Railroad gave the place its name, and the Paoli and Thorndale Line platform at Bryn Mawr station still anchors the village, with the Norristown High Speed Line stop a short walk away. Clustered around that core are Bryn Mawr College, Bryn Mawr Hospital, the Baldwin School on Montgomery Avenue, the Shipley School near Yarrow Street, Ludington Library on Bryn Mawr Avenue, and the Bryn Mawr Film Institute on Lancaster Avenue. Morris Avenue, Old Lancaster Road, Roberts Road, Harriton Road and County Line Road carry housing built from the 1880s through the 1940s, and County Line Road is the literal seam where the Montgomery County side of town gives way to the Delaware County side. What that age means for a property here is consistent. Most of these houses sit on stone or rubble foundations laid in lime mortar that has spent a century absorbing groundwater and shedding joint material. Original clay drain tile and sewer laterals run under mature root systems. Slate and clay tile roofs are common and a great many are past their designed service life. Later renovation waves dropped forced air, finished basements and third-floor conversions on top of framing and wiring that were never intended to carry them. Grade around older Bryn Mawr houses often pitches back toward the wall, and the rolling lots off the ridge send surface water in directions the original builder never planned for.

The pattern Bob sees most often in Bryn Mawr is a house maintained carefully above grade and quietly neglected below it. Owners repoint the front facade, replace slate on the visible roof slope and refinish the floors, while the stone cellar underneath keeps wicking moisture through mortar joints nobody has touched since the 1930s. It shows up the same way on the smaller twins near the tracks and on the larger lots off Morris Avenue and Roberts Road: a basement that looks bone dry in August and shows staining, efflorescence and musty air by March. Energized knob-and-tube buried under blown insulation is the other recurring find, and in a Bryn Mawr house with a converted third floor it is worth taking seriously rather than filing under old but fine. Because Bob personally performs the home inspection, the mold air sampling and the indoor air quality testing, a Bryn Mawr buyer is not stuck lining up three vendors against a contingency clock. When an inspection turns up a damp corner in a stone cellar or a finished basement that simply smells wrong, he can pull air samples during that same visit instead of sending you off to find a lab. One inspector, one appointment, one clear report. He works the rest of the Main Line corridor on the same terms, including Haverford a few minutes down Lancaster Avenue. To get a Bryn Mawr property on the schedule, call or text Bob at 610-348-6728.

20+
Years Inspecting Bryn Mawr
1880s–1940s
Primary Housing Era
4.9★
Google Rating (159)
2
National Certifications

What does a home inspection in Bryn Mawr include?

Bob approaches every Bryn Mawr inspection per ASHI and InterNACHI Standards of Practice. With 1880s–1940s housing stock dominant in Bryn Mawr, Bob pays particular attention to the era-specific issues that affect late 19th and early 20th century construction in Montgomery County.

Stone & Rubble Foundations

Pre-1920 homes commonly have stone or rubble foundations with lime mortar joints that deteriorate over a century of exposure. Bob checks for shifting stones, mortar erosion, water seepage pathways, and structural settlement that can indicate foundation movement requiring professional stabilization.

Knob-and-Tube Wiring & Gas Pipe Conversions

Original knob-and-tube wiring is one of the most critical findings in pre-1920 homes — especially when insulation has been blown over active K&T, creating a fire hazard. Bob also evaluates gas pipe conversions from original coal or oil systems, checking for proper sizing, venting, and code compliance.

Original Slate Roofs & Historic Exteriors

Many pre-1920 homes retain original slate or clay tile roofs that, while durable, require specialized maintenance. Bob inspects for cracked or missing slates, deteriorating flashing, and aging copper gutters — plus original wood siding, decorative trim, and masonry that may show a century of weathering.

Lead Paint, Plaster Walls & Coal Chute Remnants

Original plaster-and-lath walls, lead paint on trim and windows, and sealed coal chute openings are hallmarks of pre-1920 construction. Bob documents these conditions and evaluates whether past renovations addressed or inadvertently worsened historical hazards.

How does mold testing work in Bryn Mawr?

Pre-1920 homes are among the highest-risk properties for mold growth due to stone foundations that wick moisture, lime mortar joints that crack over time, and original drainage systems that predate modern waterproofing.

Porous stone foundations with no vapor barrier allowing constant moisture migration

Original clay drainage tiles that crack and clog, directing water toward the foundation

Lime mortar repointing gaps that create moisture entry points

Unventilated basement spaces with earth or deteriorating concrete floors

Clear Results & Honest Recommendations

Bob walks you through exactly what the lab results mean — no jargon, no panic. All samples go to a PRO-LAB certified lab with results in 2-3 days. Mold testing starts at $290.

What are common issues in Bryn Mawr homes?

Based on 20+ years inspecting late 19th and early 20th century homes in Montgomery County, these are the issues Bob finds most often in Bryn Mawr's 1880s–1940s housing stock:

  • Knob-and-tube wiring still energized behind walls and under blown insulation
  • Stone foundation moisture intrusion and mortar joint deterioration
  • Lead paint on original trim, windows, and exterior surfaces
  • Gas pipe conversions from original coal or oil systems with improper venting
  • Original clay sewer laterals with root intrusion and bellied sections
  • Aging slate or clay tile roofs with deteriorating flashing

Schedule in Bryn Mawr

Same-week appointments available. Bob personally oversees every inspection — you always know who's walking through your home.

610-348-6728

Mon–Sat, 7am–7pm • Urgent pre-closing available

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Pricing for Bryn Mawr

Home Inspection
Full inspection + 24-hour report
From $325
Mold Testing
PRO-LAB certified lab analysis
From $290

Every home is different. Call Bob for your specific quote — he'll give you an honest number on the spot.

See Full Pricing Details →
"24-hour report. You always get Bob. My name is on every inspection I do."
Serving Bryn Mawr since 2003 • InterNACHI Certified • No Conflict of Interest
610-348-6728 See Pricing

Why Choose Bob

Why do Bryn Mawr homeowners choose All Seasons?

01

You Always Get Bob

When you hire All Seasons, Bob personally oversees your inspection — start to finish. No corporate dispatch, no unknown inspector. You know exactly who's walking through your Bryn Mawr home.

02

InterNACHI Certified

InterNACHI Certified Professional Inspector with 20+ years of specialized expertise in Montgomery County's 1880s–1940s housing stock.

03

24-Hour Reports

Your detailed, photo-rich inspection report delivered the same day. No waiting — so you can make decisions within your contract timeline.

04

Late 19th and early 20th century Expertise

Bob has inspected hundreds of pre-1920 homes across the Philadelphia region and understands their unique construction — from rubble stone foundations to knob-and-tube wiring to original slate roofs. He knows where these homes hide problems and what's normal aging versus what needs immediate attention.

Get in Touch

How do I schedule an inspection in Bryn Mawr?

Same-week appointments available throughout the Philadelphia region.

Serving Philadelphia, Montgomery, Bucks, Chester & Delaware Counties. All major credit cards accepted.

Tell Us About Your Property

What Bryn Mawr Clients Say

★★★★★
"We bought a 1912 stone colonial in Bryn Mawr and Bob caught things two prior inspectors had missed — active moisture in a basement corner, a federal pacific panel, and end-of-life slate on the back roof. He spent nearly four hours and walked me through every finding on site. The report arrived the same evening. Exactly what you want in a Main Line inspector."
JC
Jennifer C.
Google Review • Bryn Mawr, PA
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Common Questions

What are common home inspection questions in Bryn Mawr?

Questions buyers and sellers in Bryn Mawr ask us most often — answered directly.

A residential home inspection in Bryn Mawr starts at $325. The final number depends on the size, age and condition of the property, and Bryn Mawr housing runs from compact twins near the station to large pre-war stone homes with three finished floors, so Bob quotes each address rather than working off a flat rate. Older houses with stone cellars, converted attics and multiple additions take longer to walk properly, and he would rather price that honestly up front than rush the visit. Every inspection includes a full digital report delivered within 24 hours, with photographs of each finding and plain explanations of what is normal aging for an 1890s or 1920s house versus what needs attention before settlement. Bob also walks you through the findings on site. Call or text 610-348-6728 for a firm quote on a specific Bryn Mawr property.
All Seasons covers three core services in Bryn Mawr: full residential home inspection starting at $325, mold testing with laboratory air sampling starting at $290, and indoor air quality testing starting at $290. Bob Klebanoff personally performs all three. There are no subcontractors, no rotating technicians and no handing the mold portion off to a remediation company with an incentive to find a problem. He is InterNACHI and ASHI certified and PRO-LAB certified for mold sampling, with more than 20 years inspecting homes across the Philadelphia region. On a pre-war Bryn Mawr property the three services frequently belong together, since the same stone foundation that raises a structural question is often the source of the moisture that drives a mold or air quality concern. Call 610-348-6728 to discuss what a specific property actually needs.
Yes. Bryn Mawr is core territory. Bob is based in Wyncote and has worked the Main Line corridor for more than 20 years, including both the Montgomery County side of Bryn Mawr and the Delaware County side across County Line Road. He inspects everything from twins and converted properties near the Lancaster Avenue business district to larger stone houses on the streets running off Morris Avenue and Roberts Road. Most Bryn Mawr appointments can be scheduled within the week, though the spring and fall buying seasons fill quickly on the Main Line and same-week slots go fast. Bob returns every call within 24 hours. Call or text 610-348-6728 with your address and contract timeline and he will tell you the next slot that works.
It comes up regularly. A large share of Bryn Mawr housing predates 1920, and original knob-and-tube circuits often survive in third floors, attics, closets and back additions long after the main panel was updated. The dangerous version is knob-and-tube that is still energized and has been buried under blown-in insulation during a later energy retrofit, because that wiring was designed to shed heat into open air. Bob traces what is live, what has been abandoned in place and what is carrying modern load it was never sized for, and he checks whether earlier partial rewires stopped halfway. He also looks at the panel itself, since older Bryn Mawr houses turn up obsolete equipment that insurers and buyers now flag. The report tells you which findings are safety items and which are simply age.
Expect both to need attention, and expect neither to be a reason to walk away. Stone and rubble foundations set in lime mortar are standard in Bryn Mawr, and after a century the joints erode, individual stones shift and water finds paths through the wall. Bob looks for active seepage, efflorescence, prior parge coats hiding movement and settlement patterns that indicate real structural work rather than normal aging. On the roof, original slate and clay tile can last a very long time, but the flashing, valleys and copper gutters usually fail first. He checks for cracked and slipped slates, failed step flashing at chimneys and dormers, and gutter systems that are dumping water straight against the foundation, which is the most common root cause of a wet Bryn Mawr cellar.
Any time the basement is part of the story. Porous stone foundations with no vapor barrier, cracked original clay drain tile and unventilated cellars with earth or deteriorating concrete floors make Bryn Mawr housing high risk for hidden growth, and a finished basement can conceal it entirely behind studwalls and carpet. Bob recommends adding testing when there is a musty odor with no visible source, when a basement or bathroom has been recently finished, after any plumbing leak or storm intrusion, or when someone in the household has ongoing respiratory symptoms at home. Air quality testing is also worth doing where old plaster, deteriorating lead paint on original trim and windows, or coal dust remnants from the original heating system are present. Mold testing starts at $290 and air quality testing starts at $290, and both can be done during the same visit as the home inspection.
Yes, and it is one of the more expensive surprises on this housing stock. Homes built between the 1880s and 1940s were originally plumbed in galvanized steel and cast iron, both of which are at or past the end of an 80 to 100 year service curve. Galvanized supply lines corrode inward and choke flow, and cast iron waste stacks scale and crack. Outside the house, original clay sewer laterals run under the mature street trees that give Bryn Mawr its canopy, and root intrusion and bellied sections are common. Bob documents pipe materials, visible corrosion, drainage performance and any signs of partial replacement that stopped at the basement wall, and he tells you when a lateral scope by a plumber is worth ordering before you close.
It affects what is visible, not what exists. A stone cellar inspected during a dry August stretch can look clean, while the same wall shows active seepage after a wet March or a summer thunderstorm run. That is why Bob looks past current conditions for the evidence trail: watermarks, mineral staining, rust lines on mechanical equipment, warped storage on the floor and repairs that were clearly done in a hurry. Winter inspections make it harder to fully evaluate exterior grading and buried downspout runs under snow, and cold weather limits what can be checked on a slate roof safely. None of that stops a thorough inspection. It simply means the report notes what could not be seen and why. Call 610-348-6728 to schedule.
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