Deck estimates go wrong in the buy-out, not in the square footage. A 16 ft × 20 ft deck is 320 SF of surface, but the money sits in four packages: footings, framing, decking, and railing. Each has its own unit, its own waste factor, and its own code exposure. As a deck estimating company, we take off all four from your plan set, mark the sheets, and hand you a spreadsheet you can send to a lumber yard or a framing sub.
- Deliverable
- Excel estimate + marked-up PDF plans
- Organized by
- CSI MasterFormat section
- Turnaround
- 24–48 hours for most projects
- Pricing
- ZIP-code-adjusted material and labor pricing
- Software
- Bluebeam Revu, PlanSwift, RSMeans data
You need this when a deck rides along with a custom home, an addition, or a remodel and nobody on your side wants to count joists. It also fits when you are bidding three similar decks and need the second and third priced without re-reading the details. We work from architectural sheets, framing plans, and section details. If the deck is engineered, we read the beam and connector schedules too. Every count is a true quantity survey, not a square-foot guess.
Our takeoff is organized by CSI MasterFormat division. Deck work sits mainly in Division 06, with 06 73 00 covering deck boards and railings, Division 03 for piers, and 05 12 00 for steel rail or connectors. Related scopes like Wood, Plastics & Composites Estimating and Sitework Estimating Services stay separate so you can bid them to different trades. We deliver Excel and PDF, with marked-up plan sets, in 24–48 hours for most projects. Rush is available.
Outsourced deck estimating keeps the count off your desk. A deck estimator on our side reads the blueprint, logs every RFI, and returns a cost breakdown you can drop into a bid package. The deck framing takeoff lists joists, beams, hangers, and ledger flashing by size and length. The deck railing takeoff splits posts, balusters, top rail, and guard height. The deck stair takeoff covers stringers, treads, risers, and landings. The deck footing takeoff counts piers by diameter and depth. We also price pressure-treated lumber, composite decking, PVC decking, and hardwood decking at the same quantities so you can compare before you commit. Labor hours are logged by line item, so your crew can check the count against its own production rates.
What the deck quantity takeoff covers
We price the deck as four buy-out packages plus the waterproofing and stair work that usually hides in the details. Footings, framing, decking, and railing each get their own quantity line and waste factor. Where the space below is finished, under-deck drainage and ceiling framing are called out. We also flag connector and fastener counts because treated lumber drives the coating spec.
Augered pier depth by diameter
Augered pier depth by diameter, with concrete volume in CY
Pier caps
Pier caps, anchor bolts, and post bases by count
Ledger board
Ledger board, ledger tape, and Z-flashing in LF
Built-up beam
Built-up beam, joist, rim, and blocking in LF
Joist hangers
Joist hangers, post caps, and knee braces by EA
Decking board by profile in SF and LF
Decking board by profile in SF and LF
Fascia
Fascia, picture-frame border, and stair treads
Guard posts
Guard posts, top rail, bottom rail, and balusters
What every deck estimating takeoff includes
- Augered pier depth by diameter, with concrete volume in CY
- Pier caps, anchor bolts, and post bases by count
- Ledger board, ledger tape, and Z-flashing in LF
- Built-up beam, joist, rim, and blocking in LF
- Joist hangers, post caps, and knee braces by EA
- Decking board by profile in SF and LF
- Fascia, picture-frame border, and stair treads
- Guard posts, top rail, bottom rail, and balusters
- Stair stringers, risers, and landing framing
- Hidden fastener clips and stainless screws by count
- Under-deck membrane or drainage mat in SF
- Waste factor by layout type and board profile
How we run a deck plan takeoff
- Read the deck planWe start with the deck framing plan and the section detail. That gives us post spacing, beam size, joist direction, and the deck height above grade. If the deck is more than 8 ft above grade, we flag post bracing and larger post sizes. We mark the plan with a color key so you can see what was counted. We also note the ledger attachment detail and any step-down or multi-level conditions that affect the framing layout.
- Set the footing packagePier diameter and depth come from the foundation plan or the local frost-depth note. We compute concrete volume per pier and total CY, then add anchor bolts, post bases, and pier caps by count. Where the jurisdiction requires 48 in. depth and the plan shows 42 in., we carry the deeper number and note the difference. We also flag auger access constraints, such as zero-lot-line or steep-slope conditions, that may require hand-dig allowances.
- Frame the deckWe measure the ledger, built-up beam, joists, rim, and blocking in LF. Joist spacing drives the count: 12 in. o.c. uses more lumber than 16 in. o.c. for the same deck. We add hangers, double joists at stair openings, and blocking at rail post locations. All connectors are counted by EA. We also check the beam schedule for engineered members or flush beam conditions that change the hardware package.
- Surface and railDecking is taken off by board profile in SF and LF. A picture-frame border and angled cuts raise the waste factor. We count hidden fastener clips and stainless screws per square foot, then measure guard and handrail along the post line. Stair stringers, treads, and risers are counted from the section. We also note the rail type—wood, cable, or steel—so the package goes to the right sub.
- Waterproofing and below-deckIf the area below is a patio, storage, or living space, we add under-deck drainage or a ceiling assembly in SF. Ledger tape and butyl flashing are measured in LF. Joist tape is counted by joist length. These items rarely appear in a lumber-yard quote and are the most common allowance gap. We also check for any required ventilation or access panels shown on the detail sheet.
- Price and packageWe apply ZIP-code-adjusted material and labor pricing using RSMeans data. The spreadsheet is organized by CSI division, with footings, framing, decking, and railing on separate tabs. Marked-up plan sets come with the PDF. Most projects ship in 24–48 hours. We also include a connector and fastener schedule with coating spec, and a concrete volume summary for piers with a note on frost-depth exposure.
What we need from you
- Deck planFraming plan or architectural sheet showing post spacing, beam size, joist direction, and deck outline.
- Section detailShows deck height above grade, pier depth, ledger attachment, and stair configuration.
- ElevationsNeeded for guard height, rail type, and any picture-frame or fascia profile.
- Spec bookDecking material, fastener coating, and connector finish so we price the right grade.
- Frost depthLocal minimum pier depth, or the note on the foundation plan. This changes concrete and labor.
- Below-deck useTell us if the space below is finished. It triggers membrane, drainage, and ceiling framing.
Sample takeoff format
This is the format you get back. Quantities are illustrative for a 16 ft × 20 ft deck with a 12 ft stair run and a 36 in. guard.
| Section | Line item | Qty | Unit | Ref. |
|---|---|---|---|---|
| 03 30 00 | 10 in. dia. augered pier, 48 in. deep | 24 | EA | S-101 |
| 06 05 23 | Post base, 6x6, hot-dip galvanized | 24 | EA | S-101 |
| 06 10 00 | 2x10 PT built-up beam, doubled | 184 | LF | S-102 |
| 06 10 00 | 2x10 PT joist at 16 in. o.c. | 1,840 | LF | S-102 |
| 06 15 00 | 5/4x6 PT decking board | 1,120 | SF | A-201 |
| 06 15 00 | Stair tread, 2x12 PT | 14 | EA | A-202 |
| 06 43 00 | Guard rail, 36 in., with balusters | 96 | LF | A-201 |
| 06 65 00 | Ledger tape, butyl | 184 | LF | A-203 |
| 06 05 23 | Joist hanger, 2x10, hot-dip galvanized | 48 | EA | S-102 |
| 06 15 00 | Hidden fastener clip, stainless | 1,120 | EA | A-201 |
| 06 15 00 | Stainless screw, #10 x 2-1/2 in. | 1,400 | EA | A-201 |
| 06 65 00 | Z-flashing, 26 ga. galvanized | 184 | LF | A-203 |
Units we take off and how they are measured
Deck quantities are not interchangeable. A pier is counted by depth and diameter, a joist by linear feet, and decking by square feet of surface. Mixing them is how a buy-out misses a package.
| Item | Unit | How it's measured |
|---|---|---|
| Pier depth by diameter | LF | Auger depth below grade to the bottom of the pier, by diameter |
| Piers and post bases | EA | Counted from the foundation plan or deck framing plan |
| Beam and joist | LF | Centerline length by member size, including laps and doubled members |
| Deck surface area | SF | Outside face to outside face of the deck frame, excluding stairs |
| Framing area | SF | Joist bay area tracked separately from decking surface area |
| Guard and handrail | LF | Measured along the nosing or post line, including returns |
| Stair treads and risers | EA | Counted per flight from the section detail |
| Decking board | BF or LF | Board profile by width and thickness, with waste by layout |
| Under-deck membrane | SF | Covered area below the deck, plus upturns at walls |
| Ledger flashing | LF | Ledger length plus end dams and corner laps |
| Concrete for piers | CY | Pier volume by diameter and depth, plus grade beams if shown |
Worked example: deck footing takeoff and framing for a 12 ft × 16 ft deck
This walkthrough uses a simple rectangular deck to show how we convert plan dimensions into buy-out quantities. All dimensions are illustrative and do not represent a specific project. The deck is 12 ft wide by 16 ft deep, attached to the house on the 16 ft side, with a ledger, a built-up beam on piers, and joists at 16 in. on center. The deck height above grade is 3 ft, so a 36 in. guard is required. We assume a local frost depth of 48 in. and 10 in. diameter piers.
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Footings. The beam line runs 12 ft from the house. Posts are spaced at 6 ft on center along the beam, giving three posts. Each post sits on a pier. Pier depth is 48 in. below grade. Pier volume per pier: π × (10 in. / 12)² / 4 × (48 in. / 12) = 3.1416 × 0.6944 / 4 × 4 = 2.18 CF. For three piers: 6.54 CF. Convert to cubic yards: 6.54 / 27 = 0.24 CY. Add 10% waste for over-excavation: 0.24 × 1.10 = 0.27 CY. We round to 0.5 CY for purchase. Anchor bolts and post bases: 3 each.
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Ledger. The ledger runs the 16 ft house side. Use 2x10 PT. Linear feet: 16 LF. Add 10% for cuts and laps: 17.6 LF. Ledger tape: 16 LF plus 2 ft for end dams = 18 LF. Z-flashing: 16 LF plus 2 ft for laps = 18 LF.
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Beam. Built-up beam from two 2x10 PT. Span is 12 ft. Linear feet of beam: 12 LF × 2 plies = 24 LF. Add 10% waste: 26.4 LF. Post caps: 3 EA. Through-bolts: 2 per post connection × 3 posts = 6 EA.
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Joists. Joists run perpendicular to the beam, spanning 12 ft. Joist spacing is 16 in. o.c. Number of joists: (16 ft × 12 in./ft) / 16 in. = 12 spaces, so 13 joists. Joist length: 12 ft each. Total joist LF: 13 × 12 = 156 LF. Add 10% waste: 171.6 LF. Rim joist: 16 ft + 16 ft + 12 ft = 44 LF. Add 10% waste: 48.4 LF. Blocking at beam: 12 LF. Joist hangers: 13 at ledger + 13 at beam = 26 EA. Double joists at stair opening: not applicable in this example.
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Decking. Surface area: 12 ft × 16 ft = 192 SF. Use 5/4x6 PT decking. Board coverage: 5.5 in. actual width. Board LF per SF: 12 in. / 5.5 in. = 2.18 LF per SF. Total board LF: 192 × 2.18 = 418.6 LF. Add 12% waste for cuts and defects: 418.6 × 1.12 = 468.8 LF. Convert to boards: 468.8 LF / 16 ft per board = 29.3 boards, round to 30 boards. Hidden fastener clips: 1 per joist per board. Number of clips: 13 joists × 30 boards = 390 clips. Add 10% waste: 429 clips. Stainless screws: 2 per clip = 780 screws. Add 10% waste: 858 screws.
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Guard. Guard runs along three open sides: 12 ft + 16 ft + 12 ft = 40 LF. Add 10% for returns and cuts: 44 LF. Guard posts: at 6 ft o.c. along the 40 LF: 40 / 6 = 6.67, round to 7 posts. Blocking at each post: 7 × 2 LF = 14 LF.
This example shows how each package is built from the plan. The final takeoff would include waste as separate lines, a connector schedule, and ZIP-code-adjusted pricing.
What moves a deck estimate services number
Relative impact on a typical estimate for this trade, based on estimator judgment. Select a bar for details.
Pier depth
Frost depth sets the pier length. A 42 in. pier and a 48 in. pier differ by concrete volume, auger time, and spoils. In cold climates the difference can add a full yard of concrete and a day of labor on a small deck. We carry the deeper number when the plan and the local note disagree. This affects Division 03 concrete and the footing labor line. Confirm the adopted code edition with the local building department.
Frost depth sets the pier length. A 42 in. pier and a 48 in. pier differ by concrete volume, auger time, and spoils. In cold climates the difference can add a full yard of concrete and a day of labor on a small deck. We carry the deeper number when the plan and the local note disagree. This affects Division 03 concrete and the footing labor line. Confirm the adopted code edition with the local building department.
A deck more than 8 ft above grade needs larger posts, knee bracing, and sometimes an engineered beam. Guard height may also change from 36 in. to 42 in. under commercial or multi-family code. These items are visible in the section detail, not the plan. We flag post size changes and add knee braces by EA. The beam schedule may call for a flush beam and different hardware.
PT 5/4x6, cedar, IPE, capped composite, and PVC each carry a different waste factor and fastener system. Composite requires hidden clips and joist tape. IPE needs stainless screws and pre-drilling. The board profile also sets the joist spacing the manufacturer requires. We price the decking package by profile so you can compare delivered cost per SF before you commit.
Wood balusters, cable, and steel rail are three different buy-outs. Cable rail needs tensioners and a frame that can take the load. Steel rail moves to Division 05. We price the rail package separately so you can send it to the right sub. Guard height and the 4 in. sphere spacing are code items. We measure rail along the post line and count returns.
A finished patio or living space below the deck triggers under-deck drainage, a ceiling assembly, and additional flashing. This is often shown on a reflected ceiling plan or a detail bubble, not on the deck framing plan. We look for it and price it in SF. Upturns at walls and any required ventilation or access panels are included. This is a common allowance gap.
ACQ and CA-treated lumber require hot-dip galvanized or stainless connectors. The coating spec changes the unit price and the count. We read the general notes for the treatment type and spec the matching connectors by EA. This covers joist hangers, post bases, and anchor bolts. Using the wrong coating is a callback risk and a code issue.
A straight run, a landing, and a switchback are three different framing packages. Tread count is easy, but stringers, landing posts, and double joists at the opening are not. We count stringers per flight and frame the landing separately. The stair detail also drives the guard and handrail length. We measure stringers in LF and treads in EA.
Tight lots, zero-lot-line conditions, and steep slopes may require hand-dig allowances and haul-off. We note access constraints and carry a hand-dig line when the plan shows limited equipment access. Spoils removal is priced by CY. This is a labor driver that rarely appears on a lumber quote. We flag it so your bid reflects the site condition.
Common deck takeoff gaps
These are the items that disappear between the plan and the lumber quote. We catch them by reading the section details and the general notes, not just the framing plan.
- Ledger flashing and ledger tape. They are rarely on a lumber-yard quote and often left as an allowance. We measure ledger length plus end dams and corner laps, then price butyl tape by LF.
- Frost-depth pier depth. A plan may show 42 in. while the jurisdiction requires 48 in. or deeper. We compute concrete and labor at the deeper depth and note the difference on the takeoff.
- Post height and bracing above 8 ft. Tall posts need larger sizes and knee braces. These show up in the section detail. We count braces by EA and add the post size change to the beam package.
- Guard and handrail geometry. Residential 36 in. and commercial 42 in. are different heights. The 4 in. sphere spacing and graspable handrail profile are code items. We measure rail along the post line and count returns.
- Stair stringer count and landing framing. Tread count is easy. Stringers, landing posts, and double joists at the opening are not. We count stringers per flight and frame the landing separately.
- Hidden fastener clips and stainless screws. These are a real per-square-foot cost. They disappear when decking is priced by the board. We count clips and screws from the manufacturer's coverage rate.
- Blocking at rail post locations. Rail posts need blocking or double joists to transfer load. It is shown on the framing plan as a note, not a dimension. We add blocking by LF at every post.
- Under-deck waterproofing. When the area below is a patio or living space, a membrane or drainage mat is required. We find it on the detail sheet and price it in SF with upturns.
- Concrete spoils and auger access. Tight lots may need hand-dig allowances. We note access constraints and carry a hand-dig line when the plan shows a zero-lot-line condition.
- Connector coating for treated lumber. ACQ and CA-treated lumber require hot-dip galvanized or stainless connectors. We spec the coating and count connectors by EA.
- Engineered beam substitutions. A flush beam or a longer span may call for an engineered member and different hardware. We read the beam schedule and price the substitution.
- Sales tax and delivery. Lumber tax and delivery are real costs. We add them as separate lines so your buy-out reflects the delivered price.
Deck boards and framing material options
Material choice drives waste factor, fastener system, and joist spacing. The table compares common options.
| Material | Typical joist spacing | Fastener type | Waste factor range |
|---|---|---|---|
| PT southern yellow pine | 16 in. o.c. | Hot-dip galvanized or stainless screws | 10–15% |
| Cedar | 16 in. o.c. | Stainless steel screws | 10–15% |
| IPE or hardwood | 12–16 in. o.c. | Stainless steel screws, pre-drilled | 15–20% |
| Capped composite | 12–16 in. o.c. per manufacturer | Hidden clips and stainless screws | 10–15% |
| PVC | 12–16 in. o.c. per manufacturer | Hidden clips and stainless screws | 10–15% |
Codes and standards that affect deck takeoffs
Model codes
The International Residential Code (IRC) governs most one- and two-family deck construction. IRC R507 covers exterior decks, including footing depth, ledger attachment, and guard requirements. The International Building Code (IBC) applies to commercial and multi-family decks, with different guard height and load criteria. The International Energy Conservation Code (IECC) rarely affects decks directly but may influence under-deck insulation if the space below is conditioned. Local amendments often change frost depth, guard height, and stair geometry. Always confirm the adopted code edition and local amendments with your local building department. These code items change quantities: pier depth, guard height, stair riser and tread dimensions, and connector type.
Industry standards
ASTM standards for wood treatment (ASTM D1760) and fasteners (ASTM A153 for galvanizing) determine connector coating. The American Wood Council (AWC) provides span tables and design values for wood members. ACI 318 covers concrete design for piers, though residential decks often use prescriptive IRC tables. The American Society of Civil Engineers (ASCE) 7 defines live and dead loads for decks, which influence beam and joist sizing. For steel rail, ASTM A36 and A500 are common. These standards affect material grades and hardware specifications that appear as line items in the takeoff.
Specification sections
An estimator must read CSI MasterFormat sections that apply to deck work. Division 03 30 00 Cast-in-Place Concrete for pier concrete and reinforcement. Division 05 50 00 Metal Fabrications for steel connectors and Division 05 52 00 Metal Railings for steel guard. Division 06 05 23 Wood Connectors for hangers, post bases, and screws. Division 06 10 00 Rough Carpentry for framing lumber and sheathing. Division 06 15 00 Wood Decking for board material and fasteners. Division 06 17 00 Shop-Fabricated Structural Wood for engineered beams. Division 06 43 00 Wood Decking and Railing Systems for proprietary systems. Division 06 65 00 for flashing and tape. Each section specifies material grade, coating, and installation method, which change unit costs and waste factors.
Local amendments
Adopted code editions vary by state and jurisdiction. Some states adopt the IRC with amendments for frost depth, wind speed, and seismic zones. Coastal areas may require stainless steel fasteners for salt exposure. Wildfire zones may restrict combustible decking. These amendments change material selection, pier depth, and connector coating. You must confirm the adopted code edition and any local amendments with your local building department before finalizing your bid. We note the code year and frost depth on our takeoff when provided, but the authority having jurisdiction makes the final call.
Who sends us deck plans
Deck builders
You bid several decks a month and need the second and third priced without re-reading details. The four-package format lets you send the framing tab to your lead carpenter and the rail tab to a rail sub.
Residential remodelers
A deck rides along with a kitchen or addition. You need a number fast without pulling your estimator off the main scope. We deliver in 24–48 hours so you can hold your bid date.
General contractors
You carry the deck as a self-performed package or a sub bid. The CSI-organized spreadsheet drops into your estimate and shows the connector and flashing counts your lumber quote leaves out.
Architects and designers
You need a cost check before the deck detail is final. We mark the plan with what was counted so you can see which profile and rail system drove the number.
Owners and developers
You are comparing three bids and want to know if the deck scope is apples to apples. Our takeoff shows the pier depth, board profile, and rail type behind each number.