New Castle, DE has a lot going for it: the historic district along the Strand, steady commercial traffic on Route 9 and Route 13, and a tight-knit business community that cares how things look. But the same humid Mid-Atlantic climate that makes summer evenings nice also pushes green algae, black mildew, and road-film grime onto every surface it can find. Storefronts, sidewalks, parking decks, loading docks, and dumpster pads around zip code 19720 take a beating twelve months a year. True Blue Pro Wash handles all of it.
We work with property managers, retail tenants, restaurants, auto dealerships, and light-industrial facilities throughout New Castle and the surrounding areas of Delaware City, Minquadale, and Penn Acres. Whether you manage a single storefront on Delaware Street or a strip center off Route 40, a cleaner exterior is one of the fastest and most affordable ways to protect your investment and signal to customers that you take your business seriously.
Why Commercial Properties in 19720 Get Dirty Fast
New Castle sits right along the Delaware River, and that waterfront air carries plenty of moisture. Combine that with spring pollen, summer humidity pushing into the high eighties, and fall leaf debris, and you have conditions that breed algae, mold, and biofilm on concrete, brick, EIFS, and metal surfaces faster than most business owners realize. North-facing walls and covered entryways are especially prone to green algae and black streaks. Add freeze-thaw cycles from December through March that push dirt deep into porous concrete joints and you can see why annual or semi-annual professional washing is not a luxury for commercial properties here -- it is basic maintenance.

What We Clean for New Castle Businesses
True Blue Pro Wash offers a full menu of commercial exterior cleaning services. We match the method to the surface every time, which means we are never blasting a painted wall with high pressure or under-treating an oil-stained loading dock with soap alone.
Storefronts and Building Exteriors
- Soft washing for painted siding, EIFS (Dryvit), and stucco -- removes mold and algae without blowing out caulk or cracking the substrate
- Brick and mortar cleaning with controlled pressure and appropriate detergents -- brightens facades without eroding joints
- Metal panel and awning washing -- removes oxidation haze, bird debris, and atmospheric grime
- Glass and window surrounds cleared of hard water deposits and mildew framing
- Entryway and vestibule cleaning before store open or after close so you do not disrupt foot traffic
Concrete, Pavement, and Parking Areas
- Hot-water pressure washing for parking lots, drives, and loading zones -- cuts through oil, grease, and tire marks
- Sidewalk and walkway cleaning to remove gum, algae, and staining that creates slip hazards
- Dumpster pad degreasing -- one of the most overlooked but most odor-producing surfaces on a commercial property
- Concrete curb and painted island cleaning for a sharper lot appearance
- Drive-through lane cleaning for restaurants and pharmacies in the Route 13 corridor
How We Protect Your Property and Your Customers
Commercial cleaning has higher stakes than residential work. You have customers walking through, employees working nearby, and sometimes inventory or equipment that cannot get wet. Our crew does a full walkthrough before any water hits the ground. We identify drains to protect, surfaces that need masking, and any areas where runoff containment matters. We carry commercial general liability insurance and can provide certificates of insurance to property managers and landlords in New Castle County.
We also pay attention to biodegradable cleaning agents that are compliant with local runoff rules. The Delaware River is close by, and we treat that seriously. Our surfactants break down quickly and we rinse carefully so that what goes down the storm drain is as clean as we can make it.

Recurring Service Plans for New Castle Property Managers
A lot of our commercial clients in New Castle and the Route 9 corridor have set up quarterly or semi-annual service agreements with us. That means they do not have to think about scheduling -- we show up in spring after pollen season drops its yellow film on everything, and again in fall before the winter grime sets in. Some high-traffic retail clients add a summer visit for dumpster pads and drive-through lanes. If you manage multiple properties, we can coordinate a single visit that covers all of them and bundle pricing accordingly.
Typical Commercial Cleaning Schedule for 19720
- Spring (April to May): Full facade wash after pollen season, walkway cleaning, parking lot surface reset
- Summer (July to August): Dumpster pad degreasing, drive-through lane cleaning, spot treatments for high-traffic entries
- Fall (October to November): Pre-winter concrete wash, gutter clearing if included in scope, algae treatment on shaded north walls
- Winter (on request): Spot cleaning after salt and sand tracking from parking lots into entryways
Serving New Castle and Nearby Commercial Areas
Our commercial crews are local. We cover New Castle (19720) and work regularly in the commercial zones along Route 13 through Wilmington Manor, the industrial parks off Dutch Square Boulevard, and the retail strip centers near the New Castle Corporate Commons. We also serve commercial clients in nearby Wilmington (19801, 19805), Newark (19711, 19713), and Bear (19701). If your business is in New Castle County, we are already in your area and can usually schedule a site visit within a few days.

Get a Quote for Your New Castle Business
True Blue Pro Wash has been cleaning commercial properties across New Castle County and the surrounding region for years. We show up on time, we work cleanly, and we leave your property looking like you take pride in it -- because you do. Call us at (302) 757-9755 or reach out online to schedule a free walk-through quote for your New Castle storefront, property, or facility.
Frequently Asked Questions
How much does commercial pressure washing cost in New Castle, DE?
Pricing depends on the square footage of surfaces, the types of materials, and how much prep work is involved (containment, masking, etc.). A basic storefront facade and sidewalk cleaning for a small retail unit often runs less than you would expect. Larger parking lots and multi-tenant properties are priced per visit or under a recurring agreement. Call (302) 757-9755 for a free on-site quote.
Will you work around our business hours so we do not have to close?
Yes. We schedule early morning, evening, and weekend appointments for businesses that cannot afford downtime during operating hours. Restaurants, retailers, and healthcare facilities in New Castle and the 19720 zip code regularly take advantage of our off-hours scheduling. Just let us know your constraints when you call.
Do you carry insurance for commercial work?
Absolutely. True Blue Pro Wash carries commercial general liability insurance. We can provide a certificate of insurance naming your property management company or landlord as an additional insured if required. Just ask when you book.
What is the difference between soft washing and pressure washing for commercial buildings?
Soft washing uses lower water pressure combined with professional-grade surfactants to kill and remove algae, mildew, and biofilm. It is the right method for painted siding, EIFS, stucco, and older brick where high pressure could damage mortar or caulk. Pressure washing with hot or high-pressure water is better for concrete, pavers, asphalt, and metal grating. We assess each surface and use the appropriate method every time.
How often should a commercial property in New Castle be professionally washed?
Most commercial properties in the 19720 area benefit from at least two cleanings per year: one in spring after pollen season and one in fall before winter. High-traffic properties like restaurants, drive-throughs, and convenience stores with dumpster pads often need quarterly service. We will make an honest recommendation based on what we see when we look at your property.
Can you remove oil stains from our parking lot or loading dock?
Yes. Hot-water pressure washing combined with degreasing agents breaks down motor oil, hydraulic fluid, and cooking grease from concrete and asphalt surfaces. Old or set-in stains may require a second pass or a dwell treatment, but in most cases we get significant improvement. We will be upfront with you if a stain is beyond what cleaning alone can fix.