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How Much Does It Cost to Build a Deck in Philadelphia? | Metzler Construction

Written by Metzler Construction | Sep. 09, 2025

Whether you're dreaming of grilling on summer evenings or sipping coffee on a quiet fall morning, a deck can be a beautiful extension of your home and your lifestyle. In Bucks County, Montgomery County, and the suburbs of Philadelphia, especially throughout the Main Line, decks are one of the most popular ways homeowners invest in both outdoor living and property value.

At Metzler Construction, we know how much a deck can elevate a home. But how much does it cost to build a deck on the Main Line in Philadelphia? The truth is, deck pricing can vary significantly depending on the size, materials, and features you choose. From our experience as deck builders in Philadelphia, we’re breaking it down with real numbers, common questions, and tips to help you plan wisely.

What Is the Average Price to Build a Deck in Philadelphia?

If you're just starting your research, you're probably searching: "How much does it cost to build a deck?" In the Philadelphia region, the average cost for building a deck comes down to three big factors: size, materials, and features. On average, the cost to build a deck on the Main Line in Philadelphia ranges from $15,000 to $40,000+.

To help understand what those amounts can get you, we’ve outlined three common levels of deck building we do most often across Philadelphia and its suburbs, including Main Line neighborhoods, and further out in Bucks County and Montgomery County. You can also take a look at our work to see what these possibilities can become. 

Basic Deck

This tier is perfect for homeowners who want a functional outdoor space without high-end bells and whistles. A typical build includes pressure-treated decking and railing, and a small staircase.

It’s a solid choice for small backyard additions or simple replacements, offering durability and value without stretching your budget.

Mid-Range Deck

A mid-range deck includes more style and function. This range gives you more options to enhance appearance and performance. This can include composite decking, aluminum, or vinyl railings, and a wide staircase.

This is a great middle ground for homeowners who want a stylish deck that lasts without going fully custom.

Premium Custom Decks

If you want a standout outdoor space with top-tier materials and custom details, this tier delivers. It includes high-end composite decking and railings, staircase lighting, and an under-deck drainage system.

A premium custom deck creates an elegant, long-lasting outdoor living space that blends comfort, aesthetics, and functionality.

With Metzler Construction, you won’t need a deck cost calculator or estimator since each pricing tier includes design, permit handling, labor, and materials. We have a proven process, and you will know what to expect from day one. 

What Factors Influence the Price of Building a Deck?

If you’ve been researching deck pricing, you’ve likely noticed a wide range of estimates. That’s because no two decks are the same. Several key factors can significantly impact the total cost of your deck build in the Philadelphia area.

Size and Shape

Naturally, a larger deck costs more in materials and labor. But even smaller deck replacement costs can increase if they include custom shapes, curves, or multi-level designs. Do you want to know what the average cost is for a 20x20 deck or how much it will cost to build a 12x12 deck? Access our cost guide to learn what you need to know.

Material Selection

The choice between pressure-treated wood, composite, or premium PVC decking is one of the biggest drivers of price. While wood is budget-friendly, composite and PVC offer long-term savings in maintenance and durability.

Railings and Stairs

Simple wooden railings are more affordable, but many homeowners prefer aluminum, vinyl, or composite railings for aesthetics and longevity. Wider or more intricate staircases also add to the cost.

Site Conditions

Not all decks are built in an average backyard. If your yard is sloped, uneven, or requires significant grading or demolition, your project may need additional structural work. Accessibility for materials and equipment can also affect labor costs.

Foundation and Framing

Higher decks require deeper footings and more robust framing. If your project involves a rooftop or second-story deck, expect more complexity in engineering and permitting.

Permits and Code Requirements

Permits are mandatory in Philadelphia, and permit fees, inspections, and code-compliant construction, including railing height and footing depth, can all impact your final price.

Design Features

Additional touches like built-in benches, planters, privacy walls, or lighting systems elevate both the style and the cost of your deck. Under-deck drainage systems and hidden fasteners are also premium add-ons.

Understanding these factors upfront helps you budget wisely and prioritize what matters most to your lifestyle and long-term goals. As a trusted deck builder in the Greater Philadelphia area, Metzler Construction can walk you through the options and help you find the best balance between beauty, function, and value.

Replacing or Updating an Existing Deck

Not every project starts from scratch. Many homeowners come to us after dealing with an unsafe deck, sagging, or one that is simply past its prime. Or if you’ve simply outgrown the space, a deck addition may cost less than starting over. Metzler Construction has worked as a deck contractor in the Greater Philadelphia area for many years, so we know how to advise you on the best options for your project.

If the structure is sound and you’re just replacing the surface (called “resurfacing”), the decking replacement cost for pressure-treated boards is lower, but most clients opt to upgrade to composite. Replacing deck boards with composite generally costs more per square foot than wood. It’s a smart investment that improves safety and curb appeal. It also avoids the constant staining or sealing required with wood.

If we uncover issues with framing, footings, or code compliance, that can impact final costs. However, remember that it’s always worth addressing those issues the right way to avoid bigger problems down the road.

Permits for Decks in Philadelphia and Beyond

An important question we get is: Do you need a permit for a deck in Philadelphia, Bucks County or Montgomery County?

The short answer is yes, most decks require a building permit, especially if:

  • The deck is more than 30 inches above ground.
  • It’s attached to your home.
  • It includes stairs, railings, or structural supports.

Philadelphia, Bucks County and Montgomery County each have specific zoning and building code requirements, and navigating them can be confusing if you’re doing it for the first time. And different areas on the Main Line can have different permit requirements as well. You may be eligible for Philadelphia’s EZ permit depending on the details of your deck.

There are a lot of different factors in deck permitting. That’s why working with a professional deck contractor in Philadelphia like Metzler Construction is essential. We handle the permitting process as part of our full-service approach, so you don’t have to stress about the paperwork or inspections.

What’s involved in getting a permit?

  • Site visit and measurements
  • Construction drawings or plans
  • Submission to the city for approval
  • Inspections during and after construction

Metzler Construction pulls all necessary permits and makes sure your deck is built to current code. This protects your investment and ensures safety for your family.

Is Adding a Deck Worth It?

If you’re still on the fence (no pun intended), you might be wondering: Is adding a deck worth it?

In Montgomery County and Bucks County, the answer is a clear yes, both in terms of quality of life and long-term return on investment.

  • Lifestyle Upgrade: A well-built deck creates an outdoor living space for family dinners, entertaining, or simply relaxing. It’s an extension of your home that you’ll actually use.
  • Home Value: Real estate experts often rank decks among the top remodeling projects for ROI. A deck addition can recoup 60–80% of its cost at resale.
  • Buyer Appeal: In the suburbs of Philadelphia, buyers love functional outdoor space, especially in homes with limited yard size.
  • Energy Efficiency: A deck can reduce direct sun exposure on your home, which may help lower summer cooling costs.

But the real value comes from doing it right the first time. That’s why it’s essential to work with an experienced deck installer whom homeowners on the Main Line in Philadelphia trust. At Metzler Construction, we combine craftsmanship with down-to-earth care to deliver decks that look great, feel solid, and last for decades.

Why Choose Metzler Construction for Building Your Deck in Philadelphia?

When it comes to building or replacing a deck in the Philadelphia suburbs, choosing the right contractor makes all the difference. At Metzler Construction, we’re building relationships, trust, and spaces where life happens.

Here’s why homeowners across the Main Line turn to us for their decking projects:

  • Local knowledge: We live and work right here in the Philadelphia suburbs, with a strong focus on the Main Line and surrounding communities. We understand the unique styles, zoning requirements, and expectations that come with building in this area.
  • Design That Fits: From layout to material selections, we’ll guide you through choices that feel right for your home and neighborhood while respecting your budget and priorities.
  • Reliable Communication: No surprises, no chasing down updates. We keep you in the loop with straightforward planning, regular check-ins, and full transparency from start to finish.
  • Quality craftsmanship: Our work speaks for itself: clean lines, sturdy structures, and attention to every detail. Whether it’s a brand-new deck build or a full replacement, we deliver quality that lasts.

When you’re ready to create an outdoor space that feels like home, Metzler Construction is here to make it happen. Let’s build something you’ll enjoy for years to come.

Let’s Plan Your Deck Together

Is your current deck weathered, outdated, or simply not meeting your needs? Now’s the perfect time to reimagine your outdoor space. Whether you’re looking to replace an old structure, expand your layout, or build a brand-new deck from the ground up, Metzler Construction is here to help you design something that fits your home, your lifestyle, and your vision.

We’ve partnered with homeowners throughout Philadelphia’s Main Line, greater Montgomery County, and into Bucks County to build decks that are not only durable and well-crafted, but also reflect the character of the home and enhance everyday living.

Your deck should be more than an afterthought. It’s where memories are made, meals are shared, and quiet mornings begin. Let’s work together to build a space that reflects the care, quality, and craftsmanship you expect.

Contact Metzler Construction

Contact us today to schedule a consultation with your trusted Philadelphia deck builders.