Prices for a 4x6x10 pressure treated beam or board vary by grade, treatment method, and regional lumber costs. This article presents typical price ranges, per-unit estimates, and practical ways to control expenses when budgeting for pressure treated lumber.

Item	Low	Average	High	Notes
4x6x10 pressure treated beam	$35	$50	$70	Nominal size; note actual dimensions around 3.5″ x 5.5″.
Delivery (within 20 miles)	$30	$60	$120	Dependent on distance and carrier.
Cutting/prep service	$20	$40	$80	If not included in sale.
Tax	$0	$6	$12	State and local taxes.
Total project price per piece	$85	$150	$280	Assumes single beam with light processing.

Assumptions: Midwest labor rates, standard pressure treatment (MC- or ACQ-type), normal access, and typical 10-foot boards cut to the requested 10-inch length.

Direct price for a 4x6x10 pressure treated beam

Typical total price per piece ranges from $35 to $70 depending on grade and treatment depth. For a single beam installed with light fasteners and basic supports, expect about $50 as a common average. Higher grades or enhanced preservatives can push the price toward the $70 mark. Regional lumber market fluctuations can widen the spread by 10% to 20% in winter or after weather events.

Key price components in a 4x6x10 order

The quote breaks down into four major parts, with a simple table of the main charges below. Materials cover the actual beam; Labor is the on-site handling or cutting; Delivery/Disposal accounts for transportation and waste, and Taxes reflect local charges. A small contingency may apply if local permits or inspections are involved.

Cost Component	Typical Range	Per-Unit Basis	Notes
Materials (beam)	$35-$70	per piece	Actual size around 3.5″ x 5.5″; price varies by grade and treatment.
Labor and cutting	$20-$40	per piece	If on-site cutting or preparation is needed.
Delivery/Setup	$30-$120	per delivery	Distance and access affect the cost.
Tax and fees	$0-$12	per piece	State/local charges apply.

What drives price variation for 4x6x10 pressure treated lumber

The strongest cost drivers are beam grade, treatment type, and regional supply. In practice, a higher-grade SPF- or green-stained treated beam costs more than standard C or C-X grades. The treatment method—such as borate, ACQ, or MCA—can shift the price by 10% to 25% per piece. Additionally, a purchase of multiple beams can unlock volume discounts, reducing the per-beam price when ordering 5 or more pieces at once. Size and spacing demands also influence the price if extra cutting, notching, or end trimming is required.

How length, spacing, and load affect quotes

Even with a 4x6x10 label, the final quote can change with load-bearing requirements or compatible hardware. If the beam must support a deck, post footings, or heavy roof loads, expect higher pricing due to added processing and warranty considerations. When more precise cuts or end treatments are needed, labor costs may rise by 20% to 40% per piece.

Regional price differences you should expect

Prices in coastal or rural markets can diverge from inland urban areas. On average, expect a 5% to 15% regional delta between the Northeast, Midwest, South, and West. In high-demand zones, delivery fees commonly add $50 to $100 per order, while remote regions may see $150 or more for trucking. Local timber tariffs and supply chain disruption can nudge prices up or down temporarily.

Unit economics: price per beam vs price per project

For budgeting, consider the per-beam price and how many beams are required for the project. A small project using two beams may total $90-$140 before delivery; a larger build with ten beams could fall in the $350-$700 range, excluding permits or specialized anchors. If the project spans multiple areas, you may see a combined quote that aggregates multiple delivery runs with a single handling fee.

Labor time and crew sizing for installation

Labor estimates commonly express as hours per beam and hourly rates. Typical installation might be 0.5–1.5 hours per beam for a straightforward placement with standard feet, resulting in $25-$80 in labor per piece at $50 per hour. If onsite excavation, trenching, or complex anchoring is needed, labor may rise to $100 per hour or more with multiple crew members.

Practical ways to reduce the 4x6x10 pressure treated price

Two straightforward moves can trim costs without sacrificing safety. First, confirm exact scope: choose a standard grade and avoid premium coatings or exotic preservatives unless required. Second, consolidate purchases to minimize delivery charges and leverage bundled quotes for multiple beams. If a project supports reuse of existing posts, consider partial replacement instead of full replacement to reduce material costs. Seasonal timing can also affect pricing, as off-peak periods often feature lower labor rates.

Regional comparison: regional deltas in price per beam

Across four major regions, typical price ranges per beam can be contrasted. Northeast: $40-$70; Midwest: $35-$60; South: $38-$65; West: $42-$72. Note that delivery surcharges and local taxes may shift these figures by up to 15% in any given quarter. Bulk orders reduce unit costs across regions when the supplier can optimize logistics.

Common quote examples to compare accurately

Receivers of quotes should expect variations based on thickness, treatment, and included services. Example A uses a standard grade, no-cut delivery: beam $40, delivery $40, tax $8, total $88 per piece. Example B includes on-site cutting and a mid-grade treatment: beam $60, labor $25, delivery $25, tax $6, total $116. Example C covers premium treatment with multiple beams and scheduling flexibility: beam $70, labor $60, delivery $50, tax $12, total $192.

Assumptions that commonly affect price quotes

In quotes, the assumptions often include project scope (one-story framing vs elevated deck), access (drive-up trailers allowed), and material substitutions if stock runs low. If a supplier anticipates frequent restocking delays, they may apply a small contingency to cover potential shortages, typically 5% to 15% of the material cost.

Three practical scenarios to help budget

Scenario 1: Small deck frame with two 4x6x10 beams and standard posts tends to stay near $90-$130 per beam when you include delivery and basic hardware. Scenario 2: Raised platform with multiple beams, mid-grade treatment, and on-site cutting can reach $120-$190 per beam. Scenario 3: Large utility structure (five or more beams, premium treatment, expedited delivery) may push to $170-$250 per beam depending on region and scheduling.