Building a deck is one of the best ways to expand your outdoor living space, but one of the first questions homeowners ask is, “How much does it cost to build a deck?” The answer depends on much more than square footage. Material selection, structural requirements, site conditions, and custom features all influence the final investment.
Whether you’re planning a simple platform deck or a fully customized outdoor living area, understanding these variables helps you budget more accurately before starting your project. If you’re exploring options for deck building in Sioux Falls, this guide explains realistic price ranges, the factors that affect construction costs, and what to expect when planning your investment.
What Is the Average Cost to Build a Deck?
The cost of building a deck depends on much more than square footage, but average pricing can provide a useful starting point for planning your budget.
| Deck Size | Typical Installed Cost |
| Small (100-150 sq. ft.) | $6,000-$12,000 |
| Medium (200-300 sq. ft.) | $12,000-$25,000 |
| Large (350-500+ sq. ft.) | $25,000-$50,000+ |
These ranges generally include professional installation, framing, decking, railings, and standard construction. Premium materials, multi-level designs, custom features, and challenging site conditions can increase costs. While online calculators provide rough estimates, every property is different, making an on-site evaluation the most accurate way to price a deck.
What Factors Affect the Cost of Building a Deck? 
Deck construction involves several interconnected decisions. While size plays an important role, it’s only one part of the overall budget. Understanding these variables explains why two decks with similar dimensions can have very different price tags.
Deck Size
Larger decks require more framing, decking, hardware, railings, and labor, which naturally increases the overall cost. However, larger projects don’t always cost proportionally more per square foot because certain fixed construction costs remain the same regardless of size.
Decking Material Selection
Material selection has one of the biggest impacts on your investment. Each option offers different benefits in terms of appearance, maintenance, durability, and long-term ownership costs.
| Material | Installed Cost | Maintenance | Expected Lifespan |
| Pressure-Treated Wood | $ | Regular staining and sealing | 15-20 years |
| Cedar | $$ | Moderate maintenance | 20-25 years |
| Composite Decking | $$$ | Low maintenance | 25-30+ years |
| PVC Decking | $$$$ | Very low maintenance | 30+ years |
Pressure-treated lumber remains one of the most affordable choices but requires routine sealing and staining to protect against weather exposure. Understanding the differences between species is just as important as comparing price, especially when selecting the best wood for building a deck.
Composite decking has become increasingly popular because it resists rot, splintering, and fading while requiring very little maintenance, while PVC decking offers exceptional durability and moisture resistance for homeowners seeking maximum longevity.
The right material depends on your budget, maintenance expectations, and how long you plan to stay in your home, making it worthwhile to compare the best decking materials for your project before making a final decision.
Deck Height and Site Conditions
Your property’s layout can affect pricing just as much as the deck itself.
Ground-level decks are generally less expensive because they require less structural support. Elevated decks require larger footings, additional framing, stairs, and guardrails, making them more expensive to build.
Site conditions such as sloped yards, difficult access, existing landscaping, rocky soil, drainage concerns, or removing an old deck can also increase labor requirements. These factors are difficult to price accurately without an on-site evaluation.
Labor and Installation Costs
Professional deck installation involves much more than assembling decking boards. Labor covers site preparation, footings, framing, decking, stairs, deck railings, inspections, and cleanup. Costs vary based on project complexity, accessibility, and local building requirements.
When comparing estimates, focus on the scope of work rather than the lowest price. A detailed proposal provides a clearer picture of what’s included and helps you make a more informed decision.
Custom Features That Increase Cost
Many homeowners personalize their deck with features that improve comfort, functionality, and appearance. While these upgrades add value, they also increase the overall investment.
| Feature | Typical Added Cost |
| Stairs | $1,000-$4,000+ |
| Aluminum Railings | $80-$150 per linear foot |
| Cable Railing | Premium pricing varies by design |
| Built-In Seating | $1,500-$5,000+ |
| Pergola | $4,000-$10,000+ |
| Deck Lighting | $500-$3,000+ |
Features like built-in seating, lighting, pergolas, and decorative railings often have the biggest impact on both appearance and cost. Reviewing different deck design ideas early in the planning process can help you decide which upgrades are worth including in your initial budget.
Permits and Local Building Requirements 
Most professionally built decks require permits, particularly when attached to a home or elevated above grade.
Permit costs vary by project, and homeowners should also account for inspections, local code requirements, structural engineering when needed, and HOA approvals if applicable. These requirements help ensure the finished deck meets current safety standards and local building regulations.
Wood vs. Composite Decking: Which Offers the Best Long-Term Value?
Choosing decking material isn’t simply about today’s price. It’s also about the cost of ownership over the next 20 to 30 years.
Pressure-treated wood decking has the lowest upfront cost but requires routine staining, sealing, and occasional repairs. Composite decking costs more initially but offers lower maintenance and excellent long-term durability.
If minimizing upfront cost is your priority, wood may be the better option. If reducing maintenance is more important, composite often provides better long-term value.
How Can You Keep Your Deck Project Within Budget?
Keeping a deck project within budget starts with smart planning rather than simply choosing the lowest-priced materials.
Some practical ways to manage your investment include:
- Choose a simple deck layout instead of complex angles or multiple levels.
- Prioritize the features you’ll use most and consider adding upgrades later.
- Select materials that balance your budget with year-round maintenance expectations.
- Build the deck alongside other outdoor improvements when possible.
- Request a detailed written estimate that outlines materials, labor, and optional upgrades.
- Compare proposals based on scope of work instead of price alone.
Careful planning helps reduce unexpected costs and keeps your project aligned with your budget.
How to Get an Accurate Deck Estimate
Online pricing guides are helpful for establishing a general budget, but they can’t account for your property’s layout, elevation, material preferences, or desired features. A professional estimate evaluates those details while giving you the opportunity to compare materials, discuss design ideas, understand local building requirements, and receive project-specific pricing.
A typical estimate considers:
- Desired deck dimensions
- Existing property layout
- Elevation changes
- Material preferences
- Stair and railing requirements
- Custom features
- Local building codes
- Site accessibility
- Overall project goals
The Next Step Toward Building Your Deck
Once you have a realistic budget in mind, the next step is seeing how those numbers apply to your own property. When you’re considering building a new deck, it’s important to know the factors like your home’s layout, site conditions, material preferences, and the features you want to include.
Scholten Construction takes the time to evaluate those details, answer your questions, and provide a detailed estimate so you can make an informed decision without relying on generic online price calculators. Whether you’re considering a simple backyard deck, replacing an older deck, or a fully customized outdoor living space, our team is ready to help you plan a project that fits your goals and your investment expectations.
Give us a call at 605-351-0861 to start your project today!
