The price of an 8x8x12 treated post varies by wood grade, treatment level, delivery distance, and whether installation is included. This article covers typical cost ranges in USD and explains what drives the difference between low, average, and high quotes for a single post and common project scenarios.
| Item | Low | Average | High | Notes |
|---|---|---|---|---|
| 8x8x12 treated post (uninstalled) | $40 | $70 | $110 | Common all-heartwood or higher-grade SPF with treatment |
| Delivery (within 25 miles) | $15 | $30 | $60 | Distance-based; larger orders save per-post |
| Minimum order charge | $0 | $20 | $50 | Smaller orders may incur a fee |
| Installation (optional) | $60 | $120 | $240 | Crew-based; includes setting and backfill |
| Total per-post with installation | $100 | $190 | $350 | Assumes moderate soil and simple setup |
Per-Post Cost Breakdown By Component
Typical total price includes materials, delivery, and optional installation. The following breakdown helps buyers understand where each dollar goes and which line items most influence the final quote. Assumptions: Midwest labor rates, standard ground conditions, regular pressure treatment for exterior use.
| Component | Low | Average | High | Notes |
|---|---|---|---|---|
| Materials (8x8x12 post) | $40 | $70 | $110 | Includes standard pressure-treated wood |
| Delivery | $15 | $30 | $60 | Fuel and distance factors apply |
| Labor for setting (installation) | $60 | $120 | $240 | Basic trenching and backfill; higher with hard soil |
| Permits or fees | $0 | $0 | $0 | Usually not required for a single post |
| Equipment rental (if needed) | $0 | $0 | $20 | Post-hole auger may incur small fee |
Prices fluctuate by region due to supply, demand, and delivery costs. The cost impact is most noticeable when comparing coastal markets to inland areas. In the West and Northeast, expect prices toward the higher end; in the Southeast and Midwest, values cluster around the average range. Assumptions: standard delivery within 40 miles; regional labor rates.
The treated option comes in several grades and preservative levels. A higher grade post or a heavier preservative treatment can push the price up by roughly 20% to 40% over the base. For lighter-duty landscaping posts, expect the low end; for structural or marine-grade exposure, the high end applies. Material and treatment choice directly sets the cost ceiling. Assumptions: standard duty treated pine or fir; exterior-grade preservatives.
Moving an 8x8x12 post requires equipment and crew time. In typical scenarios, labor represents the largest variability: simple hand-set installation near the surface is cheaper, while deep backfilling, rocky soils, or added braces add hours and raise the price. Labor hours strongly influence total quotes. Assumptions: one-person handling; two-person crew for set and backfill.
Longer travel distances, restricted access, or narrow job sites increase delivery fees or require smaller batches, which can raise per-post costs. If a project spans multiple posts in a large yard, bundling delivery lowers per-post expense. Access constraints are a common cost driver. Assumptions: standard driveway access; limited truck access triggers smaller deliveries.
Two common scopes: (1) single post replacement with basic backfill; (2) multiple posts for a fence or deck footing with trenching and alignment. The second scenario increases both material and labor totals, but unit costs may drop with bulk delivery. Project scope defines the final quote. Assumptions: up to 6 posts; moderate alignment requirements.
Prices can shift with seasonal demand, contractor capacity, and lumber market cycles. Off-peak scheduling may reduce rates, while peak seasons could add minor surcharges. Seasonality matters for scheduling. Assumptions: typical winter or shoulder-season price dip otherwise.
Options include using smaller cross-section posts, different treatment levels, or composites. Each substitute brings a distinct per-unit cost and may alter installation complexity. Substitutes can significantly change total cost. Assumptions: comparing 6×6 or 6×8 posts as potential replacements.
Control scope, compare quotes, and consider delivery timing. Bundling posts for a single project, choosing standard treatment, or substituting with a comparable but cheaper post can lower costs without harming function. Smart choices cut overall expense. Assumptions: realistic project timeline; no rush orders.