The 12x12x20 treated post is a substantial purchase for deck, fence, or structural projects. This article breaks down the cost, including typical total price, per-unit pricing, and key drivers that influence the final quote. The first 100 words cover the cost and the main factors buyers should expect when budgeting for a 12x12x20 treated post.
Notes: Assumes standard southern yellow pine or equivalent pressure-treated lumber, basic ground installation, and standard labor rates in the U.S. Regional differences in delivery and freight can shift totals.
| Item | Low | Average | High | Notes |
|---|---|---|---|---|
| 12x12x20 treated post (each) | $180 | $275 | $430 | Includes basic treatment and standard no-frill quality |
| Delivery per post | $25 | $60 | $150 | Distance-based; add fuel surcharge if far |
| Concrete footing per post (optional) | $15 | $35 | $70 | Assumes 6-8 inches diameter, mixed cement |
| Labor to install per post | $60 | $150 | $320 | Includes digging, set, leveling |
| Permits or inspection | $0 | $30 | $150 | Depends on local rules |
Total project price typically ranges from $350 to $1,150 per post installed, depending on soil, footing, and labor rates.
What Buyers Typically Pay for a 12x12x20 Treated Post
Pricing starts with the post itself, then adds delivery, footing, and installation. A typical installed cost range is $350-$1,150 per post, with most projects landing in the $500-$800 zone when footing and labor are included. The main cost drivers are post grade, treatment level, region, and whether a concrete footing is used. Assumptions: standard ground conditions, 20-foot length, common pressure-treated wood, and average regional labor costs.
Per-unit and total price considerations
Per-post pricing covers the material, while installation adds a separate line item. In many regions, bulk orders for multiple posts reduce per-post material costs but increase total delivery charges. The material tier (basic treated, premium grade, or preservative-enhanced) can push material prices by 20-40% within the same size.
Major Quote Components for 12x12x20 Treated Posts
Understanding the quote breakdown helps buyers compare bids accurately. The following table shows typical cost components and how they contribute to the total.
| Component | Low | Average | High | What drives it |
|---|---|---|---|---|
| Materials (post, treatment) | $180 | $275 | $430 | Grade, treatment depth, supplier |
| Labor to install | $60 | $150 | $320 | Crew size, site access, soil |
| Delivery/Shipping | $25 | $60 | $150 | Distance, fuel, access |
| Footings and concrete | $15 | $35 | $70 | Footing size, local codes |
| Permits/inspections | $0 | $30 | $150 | Local requirements |
| Warranty/repairs | $0 | $20 | $60 | Manufacturer or installer terms |
Bottom line: expect material, labor, and delivery to dominate variance between bids.
Key Variables That Change the 12x12x20 Treated Post Price
Two numeric thresholds often shift quotes more than others. First, soil and footing requirements: hard, rocky, or expansive soils demand deeper or more complex foundations, adding $20-$100 per post in concrete and labor. Second, treatment grade: basic pressure treatment versus enhanced preservative systems can vary material costs by roughly 15-40% per post.
Assumptions: standard 6-8 inch footing, typical ground conditions, and 20-foot posts stored on-site with reasonable access.
Other drivers to watch
Length beyond 20 feet, regional delivery surcharges, and whether the project requires fast-tracking or weekend labor can push totals outside the typical range. If the post is part of a larger fence or deck system, some contractors offer bundled pricing that reduces per-post cost but increases total contract amount.
Concrete footing depth and local code requirements are common tipping points for price.
Price-reducing strategies focus on scope control and material choices. Options include standard treatment vs. premium preservative, selecting locally available stock, coordinating delivery with other purchases, and choosing minimal-footing solutions when allowed by code.
Assumptions: project adheres to typical residential construction standards in the U.S.
Practical cost-reduction ideas
- Bundle deliveries with nearby projects to reduce per-post freight.
- Choose standard-duty treated posts instead of premium-grade materials if loads are typical.
- Use smaller or fewer concrete footings if site conditions permit approved alternative anchors.
- Schedule installations during off-peak times to secure lower labor rates.
- Request fixed-price quotes to avoid escalation for materials or labor during busy seasons.
Careful scope management often yields the most reliable savings without compromising safety or durability.
Prices vary by region due to freight, demand, and local labor rates. The Midwest often shows lower material costs but higher delivery in rural areas, while coastal markets may show higher material costs offset by more competitive labor. A typical regional delta is roughly ±15-25% between markets.
Assumptions: standard regional average wages and typical supply chain routes.
Sample regional ranges
- Midwest: Material $190-$320; Installed $420-$780
- Southeast: Material $190-$300; Installed $420-$760
- Northeast: Material $210-$360; Installed $460-$880
- West: Material $210-$400; Installed $470-$900
Delivery distance adds a common $10-$40 per mile to the post price.
Different wood grades and treatment levels change the per-post cost. Basic treated posts are the least expensive, while premium-grade or enhanced preservative treatments raise the price.
Assumptions: standard 20-foot length with nominal dimensions; material source is a typical lumberyard or distributor.
| Material Option | Low | Average | High | Notes |
|---|---|---|---|---|
| Basic pressure-treated | $180 | $275 | $360 | Standard protection for outdoor use |
| Enhanced preservative | $230 | $320 | $430 | Longer service life in harsh conditions |
| Premium grade lumber | $260 | $360 | $520 | Better straightness and finish |
Material choice influences both upfront cost and long-term maintenance needs.
Installation labor is a major portion of total cost and depends on crew size, access, and soil. A single 20-foot post with a standard footing typically requires 1-2 hours per post by a two-person crew; larger crews or difficult terrain add hours and cost. Equipment like augers or mini-excavators adds rental if not already on site.
Assumptions: typical suburban setting, one post installation crew, consistent weather.
Typical labor and equipment ranges
- Labor per post: $60-$150
- Two-person crew time: 1.0-2.5 hours
- Auger rental per day: $40-$120
Scheduling during favorable weather can trim delays and cost.
Delivery charges are distance dependent, often with a minimum fee. Handling at the site, crane or forklift needs, and on-site maneuvering add to the final price. If the site requires stairs, steep access, or restricted space, expect higher handling costs.
Assumptions: standard residential lot with typical driveway access.
Common handling costs
- Delivery: $25-$150 per post
- On-site handling: $20-$80 per post
- Restricted access surcharge: $10-$40 per post
Plan for at least a modest surcharge if access is limited or multiple posts must be staged on-site.
| Scenario | Post Count | Material | Installed Cost Range | Notes |
|---|---|---|---|---|
| Single post in open yard | 1 | Basic treated | $350-$450 | Minimal footing |
| Four posts with standard footings | 4 | Enhanced preservative | $1,900-$2,800 | Includes footing and delivery |
| Six posts, restricted access | 6 | Premium grade | $3,700-$5,400 | Rigging and equipment added |
Regional and site factors turn small projects into budget-heavy installations.
