Home Inspector Chester, PA | Home Inspection & Mold Testing

All Seasons provides professional home inspections and PRO-LAB certified mold testing in Chester, Delaware 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.

Chester, Delaware County

What home inspection and mold testing services are available in Chester?

Chester runs down to the Delaware River on a street grid laid out long before anyone owned a car, and the housing stock still reflects it. Brick rowhomes and porch-front twins fill the blocks off Kerlin Street, Engle Street, and Providence Avenue, most of them raised between the 1890s and the 1940s for families working the shipyards, mills, and rail lines along the water. Avenue of the States carries the downtown spine past the 1724 Court House and City Hall, two of the oldest public buildings still in use anywhere in the country, while Widener University anchors the stretch of Edgmont Avenue north of the waterfront and Subaru Park sits near where the Sun Shipbuilding yards once ran. Toward the West End and Sun Village, the pattern shifts to compact war-era worker housing with shallow basements, shared party walls, and small rear yards. Around Highland Gardens, Bennett Homes, and the streets bordering Deshong Park and Memorial Park, the lots open up into twins and detached singles with full front porches. What ties all of it together is age and grade. The land tilts toward the river and toward Chester Creek, so water moves through basements and crawlspaces here in ways it simply does not in newer inland developments. The oldest sections sit on rubble stone laid in lime mortar, the 1930s and 1940s blocks on early poured concrete or block, and nearly every one of these houses has passed through several rounds of updates, roof swaps from slate to asphalt, porch enclosures, partial rewiring, and heating conversions done in different decades by different hands.

The pattern I see most in Chester is a solid house carrying decades of layered work. These homes were built well, thick brick, real framing lumber, foundations that have held for a century, and then updated piece by piece as budgets allowed. My job is to separate normal aging from what actually needs money now. In a Chester rowhome that usually means tracing whether the knob-and-tube behind the plaster is still energized, checking the mortar joints and the floor of a stone basement for the wicking that shows up along party walls, and following the downspouts to see where roof water really goes once it leaves the gutter. Because I do all three services myself, I can finish that picture in one visit. If I open a basement door off Trainer Street and find efflorescence, a musty smell, and a rear wall that has been damp for years, I can set an air sample right then instead of handing you a referral and a second appointment. Same with air quality in a house where old plaster, a sealed coal chute, and a converted attic bedroom all share one air path. I run the same routine in Brookhaven and across lower Delaware County, and no subcontractor ever shows up in my place. You get me, my notes, and a straight explanation of what I found and what it will take to fix. Call 610-348-6728 and we will find a time that works.

20+
Years of Experience
1890s–1940s
Primary Housing Era
4.9★
Google Rating (159)
2
National Certifications

What does a home inspection in Chester include?

Bob approaches every Chester inspection per ASHI and InterNACHI Standards of Practice. With 1890s–1940s housing stock dominant in Chester, Bob pays particular attention to the era-specific issues that affect late 19th and early 20th century construction in Delaware 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 Chester?

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 Chester homes?

Based on 20+ years inspecting late 19th and early 20th century homes in Delaware County, these are the issues Bob finds most often in Chester's 1890s–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 Chester

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 Chester

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.

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"24-hour report. You always get Bob. My name is on every inspection I do."
InterNACHI Certified • PRO-LAB Certified Mold Testing • No Conflict of Interest
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Why Choose Bob

Why do Chester 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 Chester home.

02

InterNACHI Certified

InterNACHI Certified Professional Inspector with 20+ years of specialized expertise in Delaware County's 1890s–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 Chester?

Same-week appointments available throughout the Philadelphia region.

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

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Common Questions

What are common home inspection questions in Chester?

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

Home inspections in Chester start at $325. The final number depends on the size, age, and condition of the property, so a compact rowhome off Kerlin Street prices differently than a larger twin near Deshong Park. Bob quotes honestly over the phone once he knows the square footage and the year built, and add-on services like radon or a sewer scope are priced separately so you can decide what is worth doing. Every inspection comes with a detailed digital report, with photos of what Bob found and plain-language notes on what matters now versus what to plan for later. Reports are typically in your inbox within 24 hours, which matters when you are working against an inspection contingency deadline. Call 610-348-6728 for a quote.
Three, and Bob Klebanoff performs all of them himself. Full home inspections for buyers and sellers start at $325. PRO-LAB certified mold testing starts at $290. Indoor air quality testing starts at $290 and covers combustion byproducts, VOCs, particulates, and allergens. Radon and sewer scopes can be added to a home inspection so everything happens in one visit. There are no subcontractors and no rotating technicians at All Seasons. The person who walks your Chester property, collects the samples, writes the report, and answers your questions afterward is the same person every time. That matters in a city with housing this old, because the mold and air findings usually connect directly to something structural, and one inspector who saw all of it can tell you how the pieces fit together. Call 610-348-6728.
Yes. Chester is a core part of the All Seasons service area, and Bob has been inspecting homes across Delaware County and the greater Philadelphia region for more than 20 years. He works the riverfront blocks near Subaru Park and the Avenue of the States corridor as readily as the West End, Sun Village, and Highland Gardens, along with the neighboring communities of Chester Township, Brookhaven, Aston, Nether Providence, Ridley Park, Essington, and Woodlyn. Bob is InterNACHI and ASHI certified and PRO-LAB certified for mold testing. Scheduling is usually straightforward, and he can often work inside a tight contingency window if you call early in the process. If you are not certain whether your address falls inside the service area, call 610-348-6728 and ask.
Knob-and-tube wiring is the finding Bob flags most often in Chester houses built before 1920, and the problem is rarely the wiring on its own. It becomes a fire concern when someone has blown insulation over active knob-and-tube in an attic or wall cavity, which traps heat around conductors designed to shed that heat into open air. Bob checks whether the original circuits are still energized, whether the panel and service have actually been updated or only partially updated, and whether junctions are boxed or left open. He also looks at gas piping in homes converted from coal or oil heat, since those conversions were sometimes done with undersized pipe or venting that no longer meets code. None of this automatically kills a deal. It tells you what the house needs and roughly when you will need to spend on it.
In the oldest Chester housing you are usually looking at stone or rubble foundation walls set in lime mortar. That mortar erodes over a century, and because the ground here slopes toward the Delaware River and Chester Creek, water finds those eroded joints. Bob looks for shifting stone, washed-out mortar, efflorescence lines that mark past water levels, and settlement that suggests real movement rather than ordinary aging. Below grade, many of these blocks still have original clay sewer laterals running out to the street. Clay joints separate, tree roots find them, and sections belly and hold waste. A sewer scope is the only way to see it, and on a pre-1940 Chester property it is one of the better add-ons you can buy, because replacing a lateral under a city street is expensive and nobody wants that surprise after closing.
Add mold testing when the basement smells musty, when you see staining or efflorescence on a stone foundation wall, when a house has sat vacant with the heat off, or when a roof or plumbing leak was patched without ever opening the wall. Chester basements are especially worth testing because porous stone walls with no vapor barrier wick moisture continuously, and the original clay drainage tile around these homes cracked and clogged decades ago. Add air quality testing when the home still has deteriorating lead paint on trim and windows, when an attic has been converted to a bedroom without real ventilation, or when there are coal dust remnants and a sealed coal chute in the basement. Bob can run either one alongside the home inspection, so you get a single visit and one coordinated picture instead of three vendors and three schedules. Call 610-348-6728.
Most Chester rows and twins have low-slope or flat rear roof sections that drain toward a shared party wall, and that is where Bob finds the majority of active leaks. Original slate is still on some of the older detached and semi-detached homes near Deshong Park and along Providence Avenue, and while slate itself lasts a long time, the flashing, copper gutters, and fasteners around it often do not. On attached houses the bigger variable is the neighbor. A failing roof or a blocked drain two doors down can push water into your wall assembly, and party-wall flashing between adjoining roofs is frequently patched rather than properly rebuilt. Bob inspects the roof surface, the flashing details, the gutters and downspout discharge, and the interior ceilings and top-floor walls for staining that shows where water has already been getting in.
Vacant properties are common in parts of Chester, and plenty of them are structurally sound and well worth buying. The issues usually come from systems sitting unused rather than from the building itself. Bob checks whether the heat has been off through a winter, which can split supply lines and crack traps, and whether the water has been shut off long enough for seals to dry out and leak once it is turned back on. He looks for missing copper and cut electrical runs, animal or insect entry at the roofline and foundation, and moisture that built up with no air moving through the house. A vacant basement with the utilities off is one of the situations where he most often recommends a mold sample, because months of still, damp air behind a closed door is exactly the condition that grows a colony. Call 610-348-6728 before you set an inspection date so the utilities can be turned on first.
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