Mold removal in Passyunk Square for damp rowhouse basements

Mold removal in Passyunk Square means dealing with the moisture that older rowhouses on Passyunk Avenue and the streets off the Singing Fountain hold onto all year. We are a local Passyunk Square mold removal company that inspects with thermal imaging cameras and moisture meters, contains the work zone, and removes contaminated drywall and insulation instead of painting over it. Most jobs are done in one to three days.

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Mold removal in Passyunk Square, done by neighbors

Mold removal in Passyunk Square is the work of getting moisture out of buildings that were never designed to dry quickly. The neighborhood sits in South Philadelphia, ZIP codes 19147 and 19148, where dense rowhouse blocks share party walls and stone foundations that wick groundwater all year. We have worked these blocks since 2015, and our crews know the difference between a Bella Vista basement that floods after every heavy rain and an East Passyunk attic that only grows mold when summer humidity climbs. Our Passyunk Square mold removal process starts with a full inspection: thermal imaging camera to find hidden moisture, moisture meter readings on every wall, and a boroscope into wall cavities where a leak has been running behind the plaster. We then build a containment, run a negative air machine and HEPA vacuum, and remove porous materials that cannot be saved. As a mold remediation services Passyunk Square provider, we finish with an antimicrobial coating on framing and a post-remediation clearance test so you know the spore count is back to normal before we pack up.

Locally licensed and insured in Passyunk Square
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Mold removal services available in Passyunk Square

Passyunk Square mold removal calls split into two piles: water that just arrived and mold that has been growing for months. We handle both. If you are searching for mold removal in Passyunk Square PA near me after a sewer backup or a burst supply line, call us first and we will extract and dry before mold has a chance to colonize. If the smell has been there a while, we start with testing and work backward to the source.

Mold Inspection and Testing

We inspect Passyunk Square rowhouses with thermal imaging cameras, moisture meters, and boroscopes to find hidden moisture behind plaster and paneling. Air and surface samples go to a third-party lab, and you get the spore counts in writing. Most inspections in 19147 and 19148 take 60 to 90 minutes.

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Mold Remediation

Full remediation in Passyunk Square means containment, negative air, HEPA vacuuming, and removal of contaminated drywall and insulation. We work room by room so you can stay in the house on most jobs. Typical rowhouse basement remediations run two to four days including drying.

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Black Mold Removal

Black mold in Passyunk Square usually shows up on the back of drywall in basements and on attic roof sheathing. We treat it with the same containment and removal process regardless of color, because color alone does not tell you the species. Lab testing confirms what you are dealing with before we start.

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Residential Mold Removal

Most of our Passyunk Square work is residential: two- and three-story rowhouses with finished basements, shared party walls, and bathrooms stacked over kitchens. We protect stair rails, hardwood, and tile, and we keep containment tight so dust does not travel to the floors above while we work.

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Commercial Mold Removal

Passyunk Avenue restaurants, corner groceries, and small offices call us when a walk-in cooler line leaks or a basement storage room floods. We schedule commercial work overnight or before opening so your staff is not tripping over containment. Documentation is provided for landlords and insurers.

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Attic Mold Removal

Attic mold in Passyunk Square rowhouses comes from bath fans venting into the attic instead of outside, plus roof leaks around old chimneys. We remove affected sheathing and insulation, fix the venting, and treat the framing. Most attic jobs are done in a single day.

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Basement Mold Removal

Basement mold removal Passyunk Square PA homeowners call about most often starts with a wet block wall or a floor drain that backs up. We extract standing water, remove ruined drywall and carpet, dry the block, and coat the framing. We also identify the leak source so it does not come right back.

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Crawl Space Mold Removal

Some Passyunk Square blocks have crawl spaces under the first floor, and they are almost always damp. We remove fallen insulation, HEPA vacuum the joists, treat with an antimicrobial coating, and recommend a vapor barrier. Access is tight, so we use smaller equipment and run hose lines from the truck.

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Bathroom Mold Removal

Bathroom mold in Passyunk Square rowhouses grows on the ceiling above the tub and behind the vanity where a supply line has been weeping. We open the wall, remove the damaged drywall, treat the framing, and reinstall with mold resistant drywall. Most bathroom jobs take one to two days.

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Kitchen Mold Removal

Kitchen mold here usually traces to a dishwasher supply line, a refrigerator ice maker, or a slow drain leak under the sink. We pull the cabinet base, dry the cavity, and treat the framing. If the cabinet box is swollen and delaminated, we tell you before we start so you can plan the replacement.

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HVAC Mold Removal

HVAC contamination in Passyunk Square spreads fast because rowhouses share duct chases and return air. We inspect the air handler, coil, and duct runs with a boroscope, then clean with HEPA vacuuming and fogging. Duct sealant closes gaps that were pulling attic or basement air into the system.

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Drywall Mold Removal

Drywall mold removal in Passyunk Square means cutting back to clean material, not spraying the surface. We remove the affected board, treat the framing behind it, and reinstall with mold resistant drywall where it makes sense. We match texture and paint so the repair disappears.

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Water Damage Restoration

Water damage restoration in Passyunk Square starts with stopping the source, then extracting and drying. We place dehumidifiers and air movers, monitor moisture daily, and do not close walls until the readings are dry. Most rowhouse water losses dry in three to five days.

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Emergency Water Extraction

Emergency mold removal Passyunk Square 24/7 calls usually mean a burst pipe, a failed sump pump, or a backed-up floor drain. We answer around the clock, extract standing water, and set drying equipment the same night. Getting water out in the first 24 hours is what prevents the mold job later.

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Flood Cleanup

Flood cleanup in Passyunk Square follows the same pattern every time: storm water pushes through the sewer, basements fill, and everything porous has to go. We extract, remove ruined materials, disinfect, and dry. We document the loss with photos for your insurance claim.

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Sewage Backup Cleanup

Sewage backups in Passyunk Square are common on the older clay laterals, especially after heavy rain. This is Category 3 water and needs full PPE, removal of affected materials, and disinfection with Benefect or a comparable product. We treat it as a health job, not a cleaning job.

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Dehumidification Services

We run Dri-Eaz and Phoenix Restoration Equipment dehumidifiers in Passyunk Square basements until the block and framing are dry, not just the air. We leave moisture meters behind and check readings daily. Rushing this step is why mold comes back on so many rowhouse jobs.

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Air Duct Cleaning

Air duct cleaning in Passyunk Square rowhouses pulls dust, spores, and construction debris out of long horizontal runs that share space with old plaster walls. We use HEPA vacuuming and rotary brushes, then fog the system with Benefect. It is usually paired with HVAC mold removal.

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Air Quality Testing

Air quality testing in Passyunk Square gives you a baseline spore count before and after remediation. We sample outdoor air, indoor air, and any visible growth. The lab report tells you whether the space is normal, and it is the document landlords and buyers ask for.

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Odor Removal and Deodorization

Musty odors in Passyunk Square basements are a symptom, not the problem. We find the moisture source first, then treat the space with a fogger and an antimicrobial coating. If the smell is coming from the HVAC, we clean the system before deodorizing or it comes right back.

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Mold Prevention and Moisture Control

Mold prevention in Passyunk Square means managing the water that gets in every year. We install vapor barriers, fix grading, repair gutters, and set up dehumidification for basements that stay damp. A yearly moisture check is cheaper than a remediation every few years.

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Crawl Space Encapsulation

Crawl space encapsulation in Passyunk Square seals the ground and walls with a heavy liner so the space stops feeding humid air into the house. We seal vents, insulate the rim joists, and add a dehumidifier if needed. It is the single best fix for a damp first floor.

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Sump Pump Installation and Repair

Sump pump work in Passyunk Square is about keeping the basement dry during the next storm, not the last one. We install primary and battery-backup pumps, check the discharge line, and test under load. A failed pump during a summer downpour is how most basement mold starts.

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Foundation Waterproofing

Foundation waterproofing in Passyunk Square addresses the stone and brick foundations that wick groundwater into basements. We seal interior walls, repair mortar joints, and redirect exterior water where access allows. It stops the cycle that keeps mold coming back after every remediation.

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Leak Detection and Repair

Leak detection in Passyunk Square rowhouses means finding the water you cannot see: behind plaster, under tile, inside a wall shared with the neighbor. We use thermal imaging and moisture meters, then open the smallest area needed. Fixing the leak is the only way remediation holds.

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Roof Leak Repair

Roof leaks in Passyunk Square show up as attic mold and ceiling stains two floors down. Flat roofs and old chimneys are the usual culprits. We find the entry point, make the repair, and then deal with any mold that grew while the leak was active.

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Gutter Cleaning and Repair

Gutters on Passyunk Square rowhouses overflow into the walls when they clog or pull loose. That water lands at the foundation and in the basement. We clean, reseal, and re-hang gutters and check that downspouts discharge away from the house.

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Vapor Barrier Installation

Vapor barrier installation in Passyunk Square basements and crawl spaces blocks ground moisture from rising into the structure. We use a reinforced liner, seal the seams, and run it up the walls. It is a one-day job that changes how the whole house feels.

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Mold Resistant Drywall Installation

When we rebuild after remediation in Passyunk Square, we use mold resistant drywall in basements, bathrooms, and kitchens. It does not stop a leak, but it buys you time and resists surface growth. We tape, texture, and paint so the repair matches the original wall.

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Post-Remediation Verification and Clearance Testing

Clearance testing in Passyunk Square confirms the job worked. We take air samples after remediation and compare them to the outdoor baseline. If the numbers are not normal, we keep working at no extra charge. You get the lab report in writing.

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Common mold problems in Passyunk Square

Passyunk Square mold removal work follows the neighborhood's building stock and weather. Dense rowhouse blocks, stone foundations, old plumbing, and humid summers create the same four problems over and over. If you are looking for the best mold removal Passyunk Square PA has for these issues, here is what we see and how we handle it.

Basement mold from chronic foundation seepage

Most Passyunk Square basements have stone or brick foundations with no exterior waterproofing and no vapor barrier. Groundwater wicks through the masonry year-round, and the basement stays humid even when it never floods. Mold grows on the block, on stored items, and on the back of any finished wall.

Sewage backups through floor drains after storms

The clay sewer laterals under many Passyunk Square streets are a century old and have cracks and root intrusion. When heavy rain overwhelms the combined system, water backs up through the lowest drain in the house, which is usually the basement floor drain. That water is Category 3 and carries bacteria.

Attic mold from bath fans venting into the roof space

Many Passyunk Square rowhouses have bathroom exhaust fans that dump humid air straight into the attic instead of outside. In a tight rowhouse attic with limited ventilation, that moisture condenses on the roof sheathing in winter and feeds mold. Homeowners usually blame the roof.

HVAC contamination spreading spores through the house

Rowhouses share duct chases and return air paths, and a damp basement or crawl space can feed humid air into the system. Once mold grows on the coil or in the duct lining, every cycle spreads spores to the floors above. It is one of the hardest problems to spot because the growth is out of sight.

Signs you need mold removal in Passyunk Square

Mold in a Passyunk Square rowhouse rarely announces itself. It starts behind a wall, under a floor, or in an attic you never visit. These are the signs we hear about most from homeowners in 19147 and 19148, and what each one usually means. If you are searching for black mold removal in Passyunk Square near me, start with the list below and call when two or more apply.

Musty smell that never goes away

A persistent musty odor in a basement or first-floor room usually means active mold growth somewhere you cannot see. In Passyunk Square rowhouses, it is often behind paneling on a party wall or under a finished floor. Air fresheners and candles do not fix it, and the smell will get stronger as the growth spreads.
Dark staining on basement walls

Black or dark green staining on a stone or block foundation wall is surface mold feeding on moisture wicking through the masonry. It is common on the older foundations in Bella Vista and East Passyunk. Treating the surface without stopping the moisture means it comes back within a season.
Peeling paint or bubbling plaster

Paint that peels in sheets or plaster that bubbles usually means water is moving through the wall behind it. In rowhouses, this often traces to a slow supply line leak or a roof leak two floors up. By the time you see it, the wall cavity has been wet for weeks.
Warped or soft flooring near a fixture

Soft spots near a toilet, tub, or kitchen sink mean water has been leaking under the floor. In Passyunk Square rowhouses, the subfloor and the ceiling below are both at risk. This is one of the fastest paths to a mold problem on two floors at once.
Condensation on windows and pipes

Constant condensation on cold water pipes or window frames signals high indoor humidity, which is enough on its own to grow mold. Older rowhouses with poor ventilation and damp basements hit this threshold often. A dehumidifier and better airflow can stop it before growth starts.

Mold removal pricing and expectations in Passyunk Square

Typical 2026 pricing for mold removal in Passyunk Square runs from about $1,200 for a small bathroom or attic job to $6,500 or more for a full basement with sewage contamination. Most rowhouse basement remediations land between $2,800 and $5,200, including drying and clearance testing. Inspections start at $250 and are credited toward the remediation if you hire us. We give you a written scope and price before we start, and we do not add charges for drying days unless the scope changes. If you are comparing affordable mold removal in Passyunk Square quotes, make sure the cheap one includes clearance testing and drying, because those are the two line items that get cut first.

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Navigating Passyunk Square landmarks and streets

Passyunk Square is easy to work in once you know the grid. We use the Singing Fountain at Passyunk and Tasker as our main orientation point, and Passyunk Avenue itself as the spine for most addresses in 19147. Columbus Square Park gives us a landmark for the blocks toward Queen Village, and South Philadelphia High School anchors the southern end near 19148. Knowing the one-way patterns and where the trash trucks run matters more than the map app, especially when we are carrying equipment into a basement.

Singing Fountain

The fountain at Passyunk Avenue and Tasker Street is our go-to orientation point for addresses in the heart of East Passyunk. It tells us which end of the avenue we are working and which one-way streets to take in.

Passyunk Avenue

The avenue runs the length of the neighborhood and gives us a straight route through the commercial blocks. Most of our Passyunk Square addresses are within a few blocks of it, which makes staging and parking predictable.

Columbus Square Park

The park sits at the eastern edge of the neighborhood and helps us place addresses toward Queen Village and the streets around 12th and Wharton. It is a useful landmark when a customer gives us a cross street instead of a full address.

South Philadelphia High School

The high school on South Broad Street marks the southern boundary of our Passyunk Square coverage. When a job is near there, we know we are working the 19148 side and plan our route accordingly.

Coverage across Passyunk Square & Philadelphia County

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Plus surrounding Philadelphia County neighborhoods, with same-day routing on most appointments.

Reviews from Passyunk Square customers

Averaging 4.9 / 5 across verified reviews.

“We had a musty smell in our basement for two years and two other companies just wanted to spray it. Mold Removal Philly found the leak behind the paneling with a camera, showed me the readings, and explained everything before they started. They removed the wet drywall, dried the block, and the clearance test came back clean. Our basement finally smells like nothing.”

Maria D.

East Passyunk

“Sewage backed up into our Bella Vista basement after a storm and it was a mess. They came out the same night, extracted the water, and had containment up before I even went to bed. The crew was straight with me about what had to be thrown out and what could be saved. Insurance covered most of it and their photos made the claim easy.”

Anthony R.

Bella Vista

“Attic mold on a rowhouse we just bought in Queen Village. They figured out it was the bathroom fan venting into the attic, not the roof. Fixed the vent, removed the moldy sheathing, and treated the framing. Took one day and they cleaned up better than they found it. Only reason it is not five stars is scheduling took a few days.”

Jen K.

Queen Village

How seasons affect mold removal in Passyunk Square

Passyunk Square mold removal demand shifts with the calendar. Spring and summer bring water intrusion from storms and humidity, fall brings roof and gutter leaks, and winter brings condensation and burst pipes. Knowing what to watch for each season is how you avoid an emergency mold removal Passyunk Square 24/7 call in the middle of the night.

Spring

Spring rain and the first warm days wake up mold that has been dormant all winter. Basements that stayed damp through the cold months start to smell, and crawl spaces get humid fast. This is when we see a spike in basement and crawl space calls across 19147 and 19148.

Tip: Check your sump pump before the first big rain, clear the basement floor drain, and run a dehumidifier in any space that stays damp. If you smell mustiness in April, get it inspected before summer.

Summer

Heat and humidity are the peak season for mold growth in Passyunk Square. Air conditioning runs constantly, and any duct or coil contamination spreads through the house. Afternoon thunderstorms can overwhelm the combined sewer and send water into basements through floor drains.

Tip: Change your HVAC filter monthly, keep indoor humidity under 55 percent, and check the basement after every heavy storm. If a floor drain backs up, call us the same day, because mold can start within 24 to 48 hours.

Fall

Falling leaves clog gutters and downspouts, and the first nor'easters push water against rooflines and foundations. Attic mold from summer humidity often shows up now as staining on the sheathing. This is also when homeowners notice musty odors as the heat first comes on.

Tip: Clean gutters before the leaves finish falling, check the attic for staining, and make sure downspouts discharge well away from the foundation. A fall inspection catches small problems before winter makes them worse.

Winter

Cold snaps freeze pipes in unheated basements and crawl spaces, and a burst supply line can dump hundreds of gallons before you notice. Condensation on cold walls and pipes also feeds mold in tight rowhouses. Ice dams on older roofs can send water into attic insulation.

Tip: Keep basement and crawl space temperatures above freezing, insulate exposed pipes, and shut off outdoor spigots. If a pipe bursts, call us immediately, because the first 24 hours decide whether you have a drying job or a mold job.

Nearby cities and regional service coverage

Passyunk Square is our home base in South Philadelphia, and we cover the surrounding neighborhoods as one service region. If you are just outside the neighborhood line, we still come. Here is how the nearby areas relate to our Passyunk Square coverage.

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Center City

About 10 to 15 minutes north of Passyunk Square. Many of our Center City customers find us through Passyunk Square referrals and want the same rowhouse experience.

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Old City

A short drive north and east. Old City has older building stock similar to Passyunk Square, and we run the same containment and drying process there.

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Northern Liberties

North of Center City, roughly 15 to 20 minutes from Passyunk Square. We cover Northern Liberties rowhouses and converted loft buildings with the same crews.

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Fishtown

About 20 minutes north along the river. Fishtown has a mix of renovated rowhouses and older stock, and we handle both from our South Philadelphia base.

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Kensington

North of Fishtown, roughly 20 to 25 minutes away. We serve Kensington rowhouses and commercial buildings with the same remediation standards we use in Passyunk Square.

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Port Richmond

Further north along the river, about 25 to 30 minutes from Passyunk Square. We schedule Port Richmond jobs on the same routes as our Fishtown and Kensington work.

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FAQs about mold removal in Passyunk Square

Real answers from our team for the questions we hear most often before a job starts.

Talk to a real pro: +1 2152813400

How much does mold removal cost in Passyunk Square?

Most Passyunk Square mold removal jobs run $1,200 to $6,500 in 2026, with typical rowhouse basement remediations landing between $2,800 and $5,200. Inspections start at $250 and are credited toward the work if you hire us. Sewage backups and large finished basements push toward the high end because more material has to be removed and disinfected. We give you a written scope and price before we start.

Who is the best mold removal company in Passyunk Square?

The right company is the one that tests before and after, contains the work zone, and fixes the moisture source instead of just spraying the wall. We have served Passyunk Square since 2015, hold IICRC WRT and AMRT certifications, and provide clearance testing on every remediation. Ask any contractor for their certifications, insurance, and a written scope, then compare. That is how you find the best fit for your rowhouse.

Do you offer emergency mold removal in Passyunk Square?

Yes. We answer the phone 24/7 for emergency mold removal Passyunk Square calls, including nights and weekends. For a burst pipe, sewage backup, or flooded basement, we can usually be on site within a couple of hours to extract water and set drying equipment. Getting the water out in the first 24 hours is what prevents a small leak from becoming a full mold remediation.

How long does mold remediation take in Passyunk Square?

A single bathroom or attic job usually takes one to two days. A full rowhouse basement runs two to four days of remediation plus three to five days of drying, so plan on about a week from start to clearance testing. Sewage backups add time because of the disinfection step. We give you a day-by-day schedule before we start so you can plan around it.

Do you handle basement mold removal in Passyunk Square rowhouses?

Yes, and it is most of what we do here. Basement mold removal Passyunk Square PA jobs usually start with a wet stone or block foundation, a backed-up floor drain, or a slow leak from a supply line. We extract water, remove ruined drywall and carpet, dry the block to dry standard, and treat the framing with an antimicrobial coating. We also address the source with waterproofing or a vapor barrier so it does not return.

Get mold removal in Passyunk Square today

If you have a musty basement, a stain on the wall, or water where it should not be, call us. We have served Passyunk Square since 2015, we answer the phone 24/7, and we give you a written price before any work starts. Inspections start at $250 and are credited toward remediation. We serve 19147, 19148, and the surrounding Philadelphia County neighborhoods, and we can usually be on your block within the hour.

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Contact Mold Removal Philly

Call +1 2152813400 or email info@moldremovalphilly.com and we will schedule an inspection, usually the same day if you reach us before noon. Water emergencies get 24/7 response. We serve every neighborhood in Philadelphia County, from Center City to Northeast Philadelphia.

Mold Removal Philly

Phone
+1 2152813400
Address
Pearson Avenue, Unit A Philadelphia, PA 19114
Hours

Mon–Fri: 7AM – 7PM
Sat: 8AM – 4PM
Sun: Emergency Only
24/7 Emergency Available