Deck Cleaning Cost Lancaster PA: 2026 Pricing Guide

If your deck is covered in green algae, dark mildew stains, or years of ground-in grime, you are probably wondering what it is going to cost to get it cleaned before patio season kicks off. We have been washing decks across Lancaster County for years, and we can tell you that pricing depends on more than just square footage. Material, stain buildup, accessibility, and whether you want sealing or staining afterward all factor into the final number. This guide walks through exactly what to expect when you call a pressure washing company in Lancaster PA.

What Does Deck Cleaning Cost in Lancaster PA?

Most homeowners in Lancaster County pay between $150 and $600 for professional deck cleaning, with the average single-family home deck landing around $250 to $350. Here is a breakdown of common service tiers and what drives those price points:

Keep in mind these ranges reflect Lancaster County market rates for 2026. A large wraparound deck or a multilevel deck will naturally push toward the top of any range. If you are comparing quotes, make sure you are comparing the same service level.

Deck Size and Material Affects the Price

The two biggest cost drivers are square footage and what your deck is made of. Here is what each factor means for your quote:

• Wood decks (pressure-treated, cedar, redwood): These can handle higher PSI washing but often benefit from a brightener treatment afterward to neutralize the pH and open the grain before staining. Wood decks are the most common type we service in older Lancaster neighborhoods.
• Composite decks (Trex, TimberTech, Azek): These require a soft wash approach. High-pressure washing can scuff, etch, or void the manufacturer warranty. Soft washing is typically a bit more expensive per square foot but produces better results and protects your investment.
• Deck size: Most companies price by square footage or use tiered brackets (under 200 sq ft, 200 to 400, 400 to 600, etc.). Larger decks cost more in absolute terms but often less per square foot as the setup cost is spread across more surface area.
• Stain buildup and mold severity: A deck that has been neglected for three or four seasons may need a pre-treatment soak and multiple passes, which adds time and cost. If the mold has worked its way into wood grain, a brightener treatment is almost always necessary.

What Is Included in a Professional Deck Cleaning?

When you hire Lancaster Power Washing Pros, a standard deck cleaning service includes:

• Pre-rinse to remove loose debris and surface dirt
• Application of appropriate cleaning solution (mildewcide for wood, pH-neutral cleaner for composite)
• Pressure or soft wash based on deck material and condition
• Railing and spindle cleaning (included at no extra charge)
• Post-wash rinse and visual inspection
• Dry-time recommendation before foot traffic or furniture placement
• Optional brightener treatment for wood surfaces at a small upcharge

We do not charge extra for moving patio furniture if it is already cleared to the side. If you want us to move and replace a full outdoor set, we ask that you let us know when booking so we can factor that into the quote.

How to Choose a Deck Cleaning Company in Lancaster PA

Lancaster County has no shortage of power washing companies, and pricing varies widely. Here is what to look for before you book:

• Ask about their method for your deck material. If they quote a composite deck and never mention soft washing, that is a red flag. High-pressure washing a Trex deck can cause irreversible surface damage.
• Check for local references. A crew that knows Lancaster County homes understands that older Craftsman-era wood decks need a gentler touch than newer pressure-treated builds. Ask if they have done decks in your neighborhood or town.
• Verify they carry liability insurance. Pressure washing at height or adjacent to landscaping and windows carries real risk. Any legitimate contractor should be able to provide a certificate of insurance.
• Get the quote in writing. Know exactly what is and is not included. Some companies quote deck boards only and charge extra for railings, stairs, and lattice.

Want to see how deck cleaning fits into a full exterior wash? Check out our post on how much power washing costs in Lancaster PA for a complete breakdown. And if you are trying to decide between methods, our soft wash vs pressure wash guide covers the differences in plain language.