Power Washing A Deck: How Much Does It Cost?


Power washing, also known as pressure washing, is a highly effective method for cleaning outdoor surfaces, including decks. Using a high-pressure stream of water, power washing can remove dirt, grime, mold, mildew, and other contaminants, restoring the beauty and longevity of your deck. Its popularity stems from its ability to deliver quick and noticeable results without the need for harsh chemicals or excessive scrubbing.

Benefits for Deck Maintenance

Decks are subjected to harsh environmental elements year-round, leading to the accumulation of dirt, algae, and other unsightly substances. Regular maintenance is essential to preserve the integrity and aesthetics of your deck, and power washing offers a convenient solution. By thoroughly cleaning the surface, power washing helps prevent premature deterioration, extending the lifespan of your deck and reducing the need for costly repairs or replacements.

Factors Affecting Cost

Several factors influence the cost of power washing a deck, making it essential to consider various variables before obtaining quotes:

1. Size of the Deck: Larger decks require more time and resources to clean, resulting in higher costs compared to smaller ones.

2. Current Condition: The extent of dirt, mold, or mildew buildup on your deck will impact the time and effort required for cleaning, affecting the overall cost.

3. Location: Geographical location can influence pricing due to differences in market demand, cost of living, and local regulations.

4. Accessibility: Ease of access to the deck area can affect the complexity of the job and, consequently, the cost. Decks located in challenging or confined spaces may incur additional charges.

5. Additional Services: Optional services such as deck sealing, staining, or repairs will incur extra costs but may be necessary to maintain or enhance the appearance and durability of your deck.

Average Cost Estimates

While costs can vary significantly depending on the aforementioned factors, here are some average estimates to provide a general idea:

1. Cost per Square Foot: On average, power washing a deck can cost between $0.50 to $2.50 per square foot. Larger decks may fall on the lower end of the spectrum, while smaller or more intricate decks may lean toward the higher end.

2. General Price Range: For a standard-sized deck (approximately 300 square feet), you can expect to pay anywhere from $150 to $750 for power washing services.

Additional Services

In addition to basic power washing, you may opt for supplementary services to enhance the appearance and longevity of your deck:

1. Deck Sealing: Applying a protective sealant after power washing helps safeguard the wood from moisture, UV rays, and other environmental factors. Expect to pay an additional $1 to $3 per square foot for deck sealing.

2. Staining: Deck staining enhances the natural beauty of the wood while providing added protection against the elements. Prices typically range from $2 to $4 per square foot, depending on the type of stain and complexity of the job.

3. Repairs: If your deck has structural issues or damaged components, such as loose boards or rotten sections, repairs will incur extra costs. Prices vary depending on the extent of the damage and materials required.

DIY vs. Professional Services

While DIY power washing may seem cost-effective upfront, it’s essential to weigh the pros and cons compared to hiring a professional service:

DIY Power Washing


1. Lower initial cost, as you only need to invest in a power washer or rent one.

2. Flexibility to work on your schedule.


1. Risk of damaging the deck or surrounding structures due to improper technique or excessive pressure.

2. Limited effectiveness in removing stubborn stains or deep-seated dirt.

3. Time-consuming and physically demanding, especially for larger decks.

Professional Power Washing Services


1. Expertise and experience ensure thorough and efficient cleaning.

2. Professional-grade equipment and techniques for superior results.

3. Time-saving and hassle-free, allowing you to focus on other priorities.


1. Higher upfront cost compared to DIY, but often more cost-effective in the long run due to superior results and reduced risk of damage.

Tips for Hiring a Power Washing Service

When selecting a professional power washing service, consider the following tips to ensure a positive experience:

1. Research Companies: Look for reputable companies with a proven track record of quality workmanship and customer satisfaction. Online reviews and testimonials can provide valuable insights.

2. Ask for Quotes: Obtain quotes from multiple companies to compare pricing and services offered. Beware of unusually low prices, as they may indicate subpar service or hidden fees.

3. Check Credentials: Ensure that the company is properly licensed, insured, and equipped to handle the job safely and effectively.

4. Inquire About Techniques: Ask about the methods and equipment used for power washing to ensure they are suitable for your deck’s material and condition.

5. Discuss Additional Services: If you require deck sealing, staining, or repairs, clarify these needs upfront and confirm whether the company offers these services.


Power washing is a cost-effective and efficient solution for maintaining the cleanliness and integrity of your deck. By understanding the factors influencing costs and weighing the options between DIY and professional services, you can make informed decisions to protect and enhance your outdoor living space. Remember to prioritize quality and expertise when selecting a power washing service to ensure optimal results and long-term satisfaction.

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