A 40-ft roof truss typically costs $250-$700 per unit before installation, while delivery, crane use, and labor can bring the installed price to about $500-$1,300 per truss. The final quote depends on truss design, roof pitch, load requirements, order quantity, delivery distance, and site access.
| Item | Low | Average | High | Notes |
|---|---|---|---|---|
| 40-ft engineered wood truss | $250 | $450 | $700 | Per truss; standard residential design and ordinary loads |
| Fabrication and delivery | $300 | $575 | $900 | Per truss; order size and route affect freight |
| Installed truss | $500 | $850 | $1,300 | Per truss; includes typical crew and equipment allocation |
| 20-truss roof package | $10,000 | $17,000 | $26,000 | Installed estimate, before unusual access or structural work |
Assumptions: U.S. residential project, engineered wood, standard roof loads, accessible site, and pricing before tax.
Typical 40-foot roof truss prices by order size
For a standard 40-ft residential truss, budget roughly $250-$700 for the truss itself and $500-$1,300 installed. The low end generally assumes a straightforward engineered-wood design, a sizable order, and a location close to the manufacturer. The upper end is more likely with a steeper roof, heavier snow or wind loads, custom geometry, or difficult delivery and lifting.
These figures apply to the truss spanning about 40 ft between bearing points, not necessarily to a 40-ft building exterior dimension. Overhangs, bearing details, roof pitch, and the building’s structural layout can change the required truss length and design. A manufacturer’s stamped layout and building plans should confirm the actual span before an order is priced.
For a roof using 20 trusses, the bare truss package might total $5,000-$14,000. A complete installed allowance of $10,000-$26,000 is more realistic when handling, delivery, crane or telehandler time, and crew labor are included. Roofing, sheathing, fascia, and other roof framing work are generally separate.
Prices are not fixed nationwide, and a contractor may quote a package rather than a clean per-truss amount. Assumptions: standard lumber grades, engineered connector plates, typical residential spacing, and no unusual structural redesign.
What fabrication, freight, and crane charges add
A truss quote should separate fabrication from transport and setting when possible. That makes it easier to compare two bids that may include different services. A low unit price can be offset by a freight minimum, unloading charge, or a separate crane invoice.
| Quote component | Typical price | Common basis | What changes it |
|---|---|---|---|
| Engineered wood fabrication | $250-$700 | Per 40-ft truss | Pitch, web layout, lumber grade, design loads |
| Engineering and layout | $150-$600 | Per project or package | Complexity and whether calculations are included |
| Delivery | $300-$1,500 | Per truckload | Distance, load size, route, and special handling |
| Crane or lift equipment | $500-$2,000 | Per day or scheduled lift | Reach, setup, rental minimum, and site conditions |
| Installation labor | $100-$250 | Per truss allocation | Crew size, roof height, bracing, and quantity |
| Bracing and connectors | $15-$60 | Per truss allocation | Plan requirements and included hardware |
Some suppliers include engineering in the package price; others list it separately or require the builder to provide a sealed plan. Delivery charges may be assessed by the truck rather than per truss, so the effective rate falls when a truck carries more units. Confirm whether unloading is included and whether the driver can place trusses within reach of the installation crew.
For labor comparisons, a basic planning calculation is . A small crew may spend several hours staging and setting a delivery, but the actual charge also reflects setup, equipment minimums, bracing, and safety requirements. Ask whether the bid includes temporary bracing and final fastening, not just lifting each truss into position.
How span, pitch, and snow load change the quote
Span alone does not determine a 40-ft truss price; the design loads and roof shape can matter just as much. A simple symmetrical gable truss can cost less than a raised-heel, scissor, attic, or other special profile because complex layouts may use more lumber, different web configurations, and additional engineering.
Roof pitch is a major specification. A common 4:12 or 6:12 pitch can be less demanding than a steep 10:12 design, although the exact price depends on the engineer’s layout and local code loads. A scissor truss that creates a vaulted ceiling may cost about 15%-40% more than a comparable standard truss. An attic truss with usable interior space can cost 25%-60% more, subject to its floor and storage loads.
Snow and wind requirements can push a design into heavier lumber or a different web pattern. In areas with design snow loads above roughly 30-40 pounds per square foot, or high wind exposure, the manufacturer may need to specify stronger members and connectors. These thresholds are not universal code cutoffs; local conditions, roof geometry, and building plans determine the actual design.
Spacing also changes the count and unit price. Trusses at 24 in. on center use fewer units than trusses at 16 in. on center, but each truss may need to carry more load. A 40-ft span with a 2-ft spacing typically means roughly one truss per 2 ft of building length, plus end framing, but the plan—not a rule of thumb—sets the final count. Assumptions: typical residential loading; engineered plans govern all member sizes and spacing.
How many crew hours does a 40-ft truss installation take?
Setting a delivery of 40-ft trusses commonly takes a four- or five-person crew several hours to a full workday. A straightforward roof with a clear staging area may be set faster; tall walls, tight access, wind, complicated bracing, or a large package can extend the work. Contractors often price by the package or day rather than by the exact number of hours.
Labor may run about $75-$125 per worker-hour as a loaded contractor rate, but that is not necessarily the installer’s take-home wage. A crew of four working eight hours at those rates represents $2,400-$4,000 in labor billing before equipment, overhead, or other job costs. A separate crane may add $500-$2,000 for a scheduled lift, with longer rental periods or difficult setup increasing the total.
Ask the contractor to state the assumed crew, working hours, equipment, and number of trusses in the installation price. Also check whether the price includes temporary bracing and weather protection. If trusses arrive before the building is ready, storage, rehandling, or a return trip may create additional charges.
Three 40-ft truss orders with different installed totals
Order quantity and design explain why two 40-ft truss projects can differ by thousands of dollars. The examples below are planning scenarios, not guaranteed quotes. They assume normal access and exclude roof sheathing, roofing, and major structural changes.
| Project scenario | Truss specification | Approximate installed total | Approximate unit cost |
|---|---|---|---|
| Detached garage | 12 standard gable trusses, 6:12 pitch; 20 crew hours at $90 per hour | $7,500-$10,000 | $625-$835 |
| Residential roof | 20 standard gable trusses, 5:12 pitch; 32 crew hours at $100 per hour | $13,000-$18,000 | $650-$900 |
| Vaulted living space | 18 scissor trusses, 8:12 pitch; 40 crew hours at $110 per hour | $18,000-$25,000 | $1,000-$1,390 |
The garage example benefits from a smaller order and straightforward shape, although truck and equipment minimums still apply. The residential package spreads freight and mobilization over more units. The vaulted-space example costs more per unit because of the special geometry and longer installation allowance. Each total includes an estimated share of fabrication, delivery, setting, and ordinary bracing.
Regional delivery and labor differences for long-span trusses
Local supply and transport can shift the installed price by about 10%-25% compared with a nearby, competitive market. Large metropolitan areas may have more suppliers but higher labor, traffic, and crane rates. Rural buyers may face lower crew rates but higher delivery costs if the truss plant is far away or truck access is limited.
In the Midwest and Northeast, winter snow-load requirements can increase design costs, while regional lumber availability and competition influence fabrication pricing. In coastal or hurricane-prone areas, wind-load specifications and connector requirements may add cost. Western mountain locations can face long delivery routes, difficult access, or snow-related scheduling constraints.
Use these percentages as a comparison framework rather than a location-specific promise. A quote 15% above another may be reasonable if it includes stamped engineering, longer freight, or crane time that the other bid excludes. Compare the same truss count, design, delivery terms, installation scope, and tax treatment before judging the price.
When requesting bids, provide the same plans and site address to each supplier or contractor. Ask whether the quoted freight rate includes permits or escorts for oversized loads, and whether the truck can reach the site. A route that requires special handling or a second delivery can materially change a package total.
Delivery access, permits, and other charges to check
Site and code expenses are easiest to budget when they appear as separate quote lines. A 40-ft truss may be awkward to unload, store, or lift, even when the roof design itself is uncomplicated. Narrow driveways, overhead wires, soft ground, and limited crane setup space can require a smaller delivery vehicle, a longer lift, or additional labor.
Delivery is often the largest variable after fabrication and installation. A short local truckload may cost $300-$700, while a long haul or special transport can reach $900-$1,500 or more. Verify whether the quote covers unloading, whether the delivery is curbside or placed near the structure, and what happens if the site is not ready on the scheduled date.
Building permits typically cover the larger framing or building project rather than each truss as a separate permit. Permit and inspection fees can range from about $100-$1,000 or more depending on jurisdiction and project value. Engineering revisions, plan review, or required code upgrades may be billed separately, so the contractor should identify what is included in the base price.
Replacement trusses on an existing structure can cost more than new construction. The crew may need to remove roof materials, protect the interior, shore the framing, and dispose of damaged components. Roof removal and disposal can add $500-$3,000 or more depending on the area and scope, while structural repairs are priced after the damage is exposed.
How to lower the 40-ft truss price without weakening the design
The safest savings come from controlling scope and logistics, not reducing structural capacity. Provide complete plans early, confirm measurements, and order the full quantity together when possible. A consolidated order can reduce per-unit freight and avoid small-load minimums, while accurate dimensions help prevent expensive redesigns or replacement deliveries.
Compare at least three itemized quotes using the same pitch, span, heel height, spacing, lumber grade, load criteria, and connector requirements. Check whether engineering, delivery, bracing, crane time, and installation are included. A bid that appears $100 less per truss may become more expensive if it excludes $1,000 in transport or equipment.
Choose a standard gable design when it meets the architectural and structural plan. Custom scissor or attic configurations should be priced against the practical value they provide, because a specialized truss can raise both fabrication and setting costs. Do not change pitch, spacing, members, or connectors without approval from the designer or building authority.
Prepare a stable staging area and make sure the foundation, walls, and access route are ready before delivery. Coordinate the crane and crew for the same work window to reduce idle time and rehandling. If the project is flexible, request pricing outside the contractor’s busiest period, but do not leave trusses exposed to weather or delay installation without following the supplier’s storage instructions.
For an existing roof, compare targeted repair with full replacement only after a qualified professional checks the damage and the surrounding structure. A repair may cost less for isolated damage, but a weakened truss should not be modified or patched based on a generic estimate. Structural changes require an approved repair detail.