Question 1

How long does the average custom deck build take to complete?

Accepted Answer

A standard residential deck build typically takes one to two weeks once construction begins. However, the total timeline includes the design phase and the local permitting process, which can add several weeks. At LaMoria Construction, we handle the permits for you to ensure your project stays on schedule and meets all local safety codes.

Question 2

How much does a 12x12 deck cost in Cowlitz County?

Accepted Answer

In Cowlitz County, a professionally installed 12x12 (144 sq. ft.) deck typically costs between $5,500 and $11,500. A basic pressure-treated wood deck usually starts on the lower end, while premium composite decking (like TimberTech) with custom railings often falls in the higher end of that spectrum. These estimates include professional labor, local building permits, and high-quality materials suited for the Pacific Northwest climate.

Prices vary based on site slope, railing choices, and current material market rates. Email us (lamoriaconstruction@gmail.com)to schedule a site visit for a firm quote.

Question 3

Do I need a building permit to replace or build a new deck?

Accepted Answer

In most cases, a building permit is required for any deck attached to a home or any structure over 30 inches above the ground. Even for "replacement" decks, local codes often require a new inspection to ensure the footings and framing meet current safety standards. We manage the entire permit and inspection process for our clients.

Question 4

Do I need to provide the building plans, or does LaMoria Construction handle the design?

Accepted Answer

We handle the heavy lifting for you! We provide custom 3D design plans for every project to ensure the layout meets your needs and complies with all local building codes. Once you approve the design, we manage the entire permitting process, from submitting the structural drawings to scheduling the final inspections. You don't have to worry about the paperwork—just the guest list for your first BBQ.

Question 5

Is composite decking (TimberTech, Trex) worth the extra cost over pressure-treated wood?

Accepted Answer

Composite decking is worth the investment for homeowners seeking a low-maintenance, long-lasting outdoor space. Unlike wood, composite materials won’t rot, warp, or splinter and never require staining or sealing. While the upfront cost is higher, the savings on maintenance and the 25-plus year lifespan often make it more cost-effective over time.

Visit our blog post (https://www.lamoriaconstruction.com/post/deck-showdown-composite-and-pvc-vs-wood-which-reigns-supreme)on this specific subject for more information.

Question 6

Are there rules about "setbacks" for decks and outdoor structures?

Accepted Answer

Yes. Local zoning codes in Cowlitz County typically require "setbacks," which dictate how close a structure like a deck, pavilion, or gazebo can be to your property line. While a fence can often sit directly on the line, a deck or permanent roofed structure may need to be 5, 10, or even 20 feet away, depending on your specific lot's zoning. At LaMoria Construction, we review your plot plan and local ordinances to ensure your project is positioned legally to avoid costly fines or removal orders.

Note: Setback requirements can change if your property is part of an HOA (Homeowners Association). Be sure to check your neighborhood bylaws! Utility easments can also affect setbacks.

Question 7

What is the difference between "hidden fasteners" and traditional deck screws?

Accepted Answer

Traditional deck screws are driven through the top of the boards, leaving visible screw heads. Hidden fasteners are typically clips installed between the deck boards, or face screws with plugs made from your decking material that fill and conceal the screw hole, creating a completely smooth, fastener-free surface. While hidden fasteners are slightly more expensive, they provide a premium "indoor" look.

Question 8

How do you handle the "ledger board" connection to ensure my home stays dry?

Accepted Answer

The ledger board (where the deck attaches to your house) is the most critical point for preventing rot. We use a multi-stage flashing system that includes a "drip edge" and high-performance waterproof membranes. This ensures that water is diverted away from your home's rim joist and siding. Proper flashing is the difference between a deck that lasts 10 years and one that lasts 30+, and it is a standard part of every LaMoria installation.

Question 9

How soon should I treat my new wooden deck?

Accepted Answer

The timing for sealing or staining your deck depends entirely on the material used during construction:
 • Pressure-Treated Lumber: This wood is often "wet" from the chemical treatment process. You should typically wait 3 to 6 months before treating it. A good rule of thumb is the "Splash Test": sprinkle some water on the boards; if it beads up, the wood is too wet. If it soaks in, it’s ready for stain.
 • Cedar or Redwood: These natural woods can be treated much sooner—usually within 2 to 4 weeks—once the surface moisture has evaporated.
 • Kiln-Dried Lumber: If you opted for premium kiln-dried wood, it can often be stained immediately after installation.

Pro Tip: Waiting too long (over a year) can lead to UV damage and "silvering," while staining too early can cause the product to peel because it can't bond with the damp wood.

Decks and Porches

Custom Design & Build

Custom Design

Permit Management

Construction Phase

Post-Construction

Deck Replacement, Repair and Restoration

Preventive Maintenance

Deck Repair and Restoration

Deck Replacement

Safety and Compliance

Frequently asked questions