Property violations in Crestmont Farms — Far Northeast Philadelphia — what buyers need to know

Crestmont Farms sits in the Far Northeast corner of Philadelphia in ZIP 19116, developed primarily during the 1960s as part of the postwar suburban expansion that brought detached and semi-detached single-family homes to the city's northeastern edge. The housing stock is a mix of brick detached homes, brick-and-frame semi-detached pairs, and modest ranches constructed between roughly 1958 and 1975 — a building era defined by oil heat, modest lot sizes, and owner-installed improvements that accumulated over decades without permits. The neighborhood has maintained relatively high owner-occupancy and low overall violation density compared to inner-city markets, but that does not mean the property record risks are trivial. The specific risks in Crestmont Farms are concentrated in categories that are easy to miss on a standard walkthrough: buried heating oil tanks, aging mechanical systems, accessory structure permit compliance, and Pennypack Creek flood zone exposure on the neighborhood's creek-adjacent lots.

Buried heating oil tanks in pre-1975 homes

Crestmont Farms was developed during the era of oil heat, and the majority of homes built before 1975 were originally heated by oil-fired furnaces or boilers fed by underground storage tanks (USTs) buried in the rear yard or beneath the basement floor slab. As natural gas service became available and oil heat costs rose, most of these homes were converted to gas heat — but the buried tanks were frequently decommissioned in place rather than removed. A tank left in the ground, even one that was properly decommissioned at the time of conversion, represents an ongoing environmental liability. Tanks corrode over decades, and a corroded tank can leak residual heating oil into the surrounding soil and groundwater, creating a contamination condition that triggers Pennsylvania DEP regulatory requirements and can cost tens of thousands of dollars to remediate.

• Ask about oil heat conversion history. Any Crestmont Farms home built before 1975 should be questioned about its heating history. If the current system is gas but the original system was oil, ask when the conversion was done and what happened to the tank. A documented tank removal with a DEP permit and closure letter is the ideal outcome — it confirms the tank was physically removed and the site was properly closed.
• Commission a tank sweep before closing. If there is any uncertainty about whether a buried tank remains on the property, commission a ground-penetrating radar or electromagnetic induction survey by a qualified environmental contractor before closing. This is a relatively inexpensive precaution compared to the cost of discovering a leaking tank after purchase. Our underground oil tank guide explains the full assessment and remediation process.
• Review seller's disclosure carefully. Pennsylvania's seller disclosure requirements include disclosure of known underground storage tanks and known environmental contamination. A seller who knows of a buried tank is required to disclose it — but sellers who bought the home after the oil conversion and never investigated may not know whether a tank exists. The absence of a disclosure is not a guarantee that no tank is present.
• Environmental remediation costs and timelines. If a leaking tank is discovered, remediation requires engagement with Pennsylvania DEP, soil and groundwater assessment, and potentially extensive excavation and remediation work. Timeline from discovery to site closure can range from months to years depending on the extent of contamination. Budget and timeline exposure from a tank discovery mid-purchase can be significant — understand the risk before you close.

Pool, deck, shed, and accessory structure permit compliance

Crestmont Farms homes sit on larger lots than most Philadelphia rowhouse neighborhoods, and over the decades of owner-occupancy those lots have accumulated additions: inground and above-ground swimming pools, wood decks, concrete patios, detached sheds, garage additions, and finished basements. Many of these improvements were installed by homeowners who did not pull permits, either because they were unaware of the permit requirements or because they chose to proceed without them. The result is a housing stock where the visible improvements frequently exceed what the permit record documents.

• Pull the full permit history via eCLIPSE and compare to the property. Before submitting an offer, pull the permit history for the address through the Philadelphia building permits lookup. Then compare what the permit record documents against what you see in person. An inground pool with no pool permit, a large deck with no deck permit, or a finished basement with no electrical or structural permit are all indicators of unpermitted work. Each creates potential liability for the buyer post-closing.
• Inground pool permit and barrier compliance. Philadelphia requires permits for inground pool installation, and requires compliant fencing or barrier systems around inground pools under both the Philadelphia Building Code and zoning regulations. A pool installed without a permit may not have been inspected for structural integrity of the shell, proper electrical bonding and grounding, or compliant barrier and gate requirements. Verify permit status before buying any property with an inground pool.
• Deck structural integrity and permit history. Decks added without permits were not inspected at the time of construction, meaning ledger attachment to the house, post footing depth, structural framing, and railing systems were never reviewed by an inspector. Older unpermitted decks may have accumulated deferred maintenance issues — rotted ledger boards, undersized footings, deteriorated framing — that create structural and safety risks. Have an inspector specifically evaluate the deck, and check the permit record for the original construction permit.
• Garage conversions and finished basements. Converted garages and finished basements are common in this housing stock and frequently lack the permits required for the conversion work. A garage converted to living space requires permits for the change of use, insulation, electrical, and any plumbing added. A finished basement requires permits for egress windows, electrical, and any plumbing. Unpermitted conversions create valuation, financing, and resale complications.

Pennypack Creek flood zone exposure on creek-adjacent lots

Crestmont Farms is bordered to the south and east by Pennypack Creek tributaries and the Pennypack Creek corridor itself, and properties on the lower-elevation blocks nearest the creek corridor carry Pennypack Creek flood zone exposure under FEMA's National Flood Insurance Program mapping. Understanding whether a specific Crestmont Farms property sits within a mapped flood zone is essential before purchasing — flood insurance requirements for properties in FEMA Zone AE can add significant annual costs, and properties with a flood history may have underlying structural or drainage issues that a standard inspection will not capture.

• Verify flood zone status via FEMA's Flood Map Service Center. Not all Crestmont Farms properties carry flood zone exposure — it is concentrated on the lower-elevation lots nearest the creek corridors. Check the FEMA Flood Map Service Center for the specific property address before submitting an offer. Our flood zone lookup guide explains how to read FEMA flood maps for Philadelphia properties.
• Mandatory flood insurance in FEMA Zone AE. Properties with federally backed mortgages that sit within FEMA Zone AE are required to carry flood insurance. Obtain a flood insurance quote before closing to understand the annual premium exposure. In areas with a history of claims activity, premiums can be substantial and should be factored into the carrying cost analysis.
• Creek-adjacent drainage and sump systems. Homes on lots adjacent to Pennypack Creek tributaries frequently have sump pump systems installed to manage groundwater and periodic water intrusion. Verify that any sump pump system is functional, that the discharge is properly directed, and that the basement has not experienced recurring water intrusion. A history of basement flooding is a material disclosure item under Pennsylvania seller disclosure requirements.
• Elevation certificate value for insurance pricing. For properties in or near a mapped flood zone, an elevation certificate prepared by a licensed surveyor provides the elevation data needed for precise flood insurance pricing. If no elevation certificate exists for the property, one can be commissioned before closing. An elevation certificate that confirms the first-floor elevation is above the Base Flood Elevation can result in substantially lower flood insurance premiums.

Aging mechanical systems and the 60-year maintenance backlog

The 1960s-era housing stock in Crestmont Farms is now approaching or past the 60-year mark, and many of the original mechanical systems have been replaced over the decades — but not always with the permits required for that replacement work. The systems that remain original or have been replaced informally deserve specific attention during any pre-purchase inspection.

• Electrical service panel age and capacity. Homes built in the 1960s were typically wired with 100-amp service and may have Federal Pacific Stab-Lok or Zinsco electrical panels, both of which have documented safety concerns and may be flagged by insurance underwriters. Verify the panel brand, condition, and amperage. A panel replacement — typically $2,000 to $4,000 — is a common post-purchase cost in this housing stock if the original panel remains.
• Galvanized steel supply piping. Homes of this era frequently have galvanized steel water supply piping that is now well past its 50-year service life. Galvanized pipe corrodes from the inside, reducing flow and eventually failing. A plumber can assess the water pressure and pipe condition; if significant galvanized piping remains, budget for partial or full repiping.
• Original or aging HVAC equipment. Gas furnaces installed in the 1980s or 1990s are at or beyond their expected service life. Air conditioning condensers and air handlers from the same era are similarly aged out. Identify the age of all HVAC equipment during inspection and budget for near-term replacement if any equipment is over 20 years old.
• Roof age and condition. Asphalt shingle roofs have a typical life of 20 to 25 years. A Crestmont Farms home that has not had a roof replacement in 25 or more years is carrying a replacement cost of $8,000 to $15,000 depending on the roof area and materials. Verify roof age through permits if possible, or through visual inspection and seller representation, and factor replacement cost into your offer analysis.

What to check on every Crestmont Farms property

1. Oil tank history and tank sweep. For any pre-1975 home, ask about oil heat conversion history and commission a ground-penetrating radar or EM survey before closing to confirm no buried tank remains on the property. See our oil tank guide for the full process.
2. Full permit history via eCLIPSE. Pull and review the complete permit record. Compare permitted improvements against what is visible on the property — pools, decks, sheds, finished basements, and garage conversions without corresponding permits are unpermitted work that creates liability.
3. Flood zone verification. Check the FEMA Flood Map Service Center for the specific lot. If the property falls in FEMA Zone AE, obtain a flood insurance quote before closing and review the property's flood and water intrusion history.
4. Inground pool permit and barrier compliance. If the property has an inground pool, verify the pool permit exists and that barrier/fencing requirements are met under current code.
5. Electrical panel assessment. Identify panel brand, age, and amperage. Flag Federal Pacific Stab-Lok and Zinsco panels for evaluation by a licensed electrician.
6. HVAC system age and condition. Verify ages of furnace, air handler, and condensing unit. Budget for near-term replacement of any equipment over 20 years old.
7. Galvanized supply piping evaluation. Have a plumber assess water pressure and pipe condition. If significant galvanized piping remains, include repiping cost in your post-purchase budget.
8. Sump pump and drainage assessment for creek-adjacent lots. Verify sump pump functionality and check for any history of basement water intrusion on properties near Pennypack Creek tributary corridors.