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STACKX / OPEN COST BOOK

Know what the material buys.

Actual published product prices. Visible quantities. A clear boundary between a material reference and the cost of building a home.

Review this material evidence with my home budget

SOURCE CHECK / OCTOBER 5, 2026

A price is only useful
when the scope is clear.

Nine visible prices, one clear gap. Compare two dated source checks across concrete, framing, sheathing, roofing and insulation, then replace a reference with your local quote.

Explore the price book
9 / 10prices visible at the latest check

Three displayed prices differ from September; six match. One product needs a fresh quote. Earlier observations stay in the record.

Manual source review · no automatic refresh
Geography matters. Home Depot web prices have no verified local store or delivery ZIP. The roofing supplier serves the Philadelphia region. These are not Raleigh or Houston delivered prices. Store pricing, availability and delivery charges must be checked before ordering.

01 / PRICE + SPECIFICATION + SOURCE

The public price book

Listed single-unit material prices in USD. No credit-card incentives or bulk discounts are applied. Checked October 5, 2026; source prices can change after review. Store and delivery ZIP remain unverified.

Concrete

Quikrete concrete mix

80 lb bag, model 110180

$6.47/ 80 lb bag

The Home Depot
U.S. web listing; local store and delivery ZIP unverified

Bagged mix reference only. Not a ready-mix truck price and not used to price the slab.

Displayed price matches September

Price visible on the official source at this check; supplier price-update date was not supplied.

Two dated checks

September 6: $6.47 / 80 lb bag.
October 5: $6.47 / 80 lb bag.

A difference between displayed web prices is not a measured local market move. Home Depot store and ZIP were not pinned on either visit, so store-level comparability is unverified.

Read price source Product details
Checked 2026-10-05
Framing

SPF dimensional lumber

Nominal 2 × 4 × 10 ft, #2 grade, model 6091

$7.36/ 10 ft board

The Home Depot
U.S. web listing; local store and delivery ZIP unverified

Listed nominal size and grade. Board count requires a framing takeoff.

Displayed price matches September

Price visible on the official source at this check; supplier price-update date was not supplied.

Two dated checks

September 6: $7.36 / 10 ft board.
October 5: $7.36 / 10 ft board.

A difference between displayed web prices is not a measured local market move. Home Depot store and ZIP were not pinned on either visit, so store-level comparability is unverified.

Read price source Product details
Checked 2026-10-05
Framing

SPF dimensional lumber

Nominal 2 × 4 × 12 ft, #2 premium grade, model 058440

$8.84/ 12 ft board

The Home Depot
U.S. web listing; local store and delivery ZIP unverified

Different length from the 10 ft reference; not an equivalent quantity.

Displayed price matches September

Price visible on the official source at this check; supplier price-update date was not supplied.

Two dated checks

September 6: $8.84 / 12 ft board.
October 5: $8.84 / 12 ft board.

A difference between displayed web prices is not a measured local market move. Home Depot store and ZIP were not pinned on either visit, so store-level comparability is unverified.

Read price source Product details
Checked 2026-10-05
Framing

KD-HT stud

Nominal 2 × 4 × 96 in, #2 premium grade, model 058449

$4.25/ 96 in stud

The Home Depot
U.S. web listing; local store and delivery ZIP unverified

Eight-foot stock, not a nine-foot wall stud specification.

Displayed price matches September

Price visible on the official source at this check; supplier price-update date was not supplied.

Two dated checks

September 6: $4.25 / 96 in stud.
October 5: $4.25 / 96 in stud.

A difference between displayed web prices is not a measured local market move. Home Depot store and ZIP were not pinned on either visit, so store-level comparability is unverified.

Read price source
Checked 2026-10-05
Sheathing

Standard OSB sheathing

7/16 in category, nominal 4 × 8 ft, model 386081

$13.63/ 32 sq ft sheet

The Home Depot
U.S. web listing; local store and delivery ZIP unverified

Panel-only reference. Wall bracing, fastening and weather barrier need their own specifications.

+$0.79 vs September display

Price visible on the official source at this check; supplier price-update date was not supplied.

Two dated checks

September 6: $12.84 / 32 sq ft sheet.
October 5: $13.63 / 32 sq ft sheet.

A difference between displayed web prices is not a measured local market move. Home Depot store and ZIP were not pinned on either visit, so store-level comparability is unverified.

Read price source Product details
Checked 2026-10-05
Sheathing

Huber ZIP wall sheathing

7/16 in category, nominal 4 × 8 ft, model 777198

$36.58/ 32 sq ft sheet

The Home Depot
U.S. web listing; local store and delivery ZIP unverified

Different system scope from plain OSB. Tape, flashing and installation are not included.

+$1.60 vs September display

Price visible on the official source at this check; supplier price-update date was not supplied.

Two dated checks

September 6: $34.98 / 32 sq ft sheet.
October 5: $36.58 / 32 sq ft sheet.

A difference between displayed web prices is not a measured local market move. Home Depot store and ZIP were not pinned on either visit, so store-level comparability is unverified.

Read price source Product details
Checked 2026-10-05
Sheathing

ForceField wall/roof panel

7/16 in category, nominal 4 × 8 ft, model 1366588

$23.32/ 32 sq ft sheet

The Home Depot
U.S. web listing; local store and delivery ZIP unverified

Single-panel displayed price. Accessories and installation excluded.

+$1.34 vs September display

Price visible on the official source at this check; supplier price-update date was not supplied.

Two dated checks

September 6: $21.98 / 32 sq ft sheet.
October 5: $23.32 / 32 sq ft sheet.

A difference between displayed web prices is not a measured local market move. Home Depot store and ZIP were not pinned on either visit, so store-level comparability is unverified.

Read price source Product details
Checked 2026-10-05
Sheathing

LP WeatherLogic sheathing

7/16 in category, nominal 4 × 8 ft, model 42413

$22.44/ 32 sq ft sheet

The Home Depot
U.S. web listing; local store and delivery ZIP unverified

Panel price only; this system also requires its specified accessories.

Displayed price matches September

Price visible on the official source at this check; supplier price-update date was not supplied.

Two dated checks

September 6: $22.44 / 32 sq ft sheet.
October 5: $22.44 / 32 sq ft sheet.

A difference between displayed web prices is not a measured local market move. Home Depot store and ZIP were not pinned on either visit, so store-level comparability is unverified.

Read price source Product details
Checked 2026-10-05
Roof covering

GAF Timberline HDZ, Charcoal

Architectural asphalt shingles, 33.33 sq ft per bundle

$44.48/ 33.33 sq ft bundle

Fence Deck Supply
Bristol, Pennsylvania supplier; Philadelphia-area service region

Supplier price list says effective August 2026. Decking, starter, ridge, underlayment and installation excluded.

Displayed price matches September

Price visible on the official source at this check; supplier price-update date was not supplied.

Two dated checks

September 6: $44.48 / 33.33 sq ft bundle.
October 5: $44.48 / 33.33 sq ft bundle.

A difference between displayed web prices is not a measured local market move. Home Depot store and ZIP were not pinned on either visit, so store-level comparability is unverified.

Read price source
Checked 2026-10-05 · list effective 2026-08
Insulation

Owens Corning R-13 faced roll

15 in × 32 ft, 40 sq ft per roll, model RF10

Quote needed/ 40 sq ft roll

The Home Depot
U.S. web listing; local store and delivery ZIP unverified

Material comparison only. R-13 is not a claim of energy-code compliance for a new home.

Last observed $24.97 on 2026-09-06

Current price was not visible in the retrieved product page. The September price is historical only; enter a supplier quote to price this line.

Two dated checks

September 6: $24.97 / 40 sq ft roll.
October 5: Price not captured.

A difference between displayed web prices is not a measured local market move. Home Depot store and ZIP were not pinned on either visit, so store-level comparability is unverified.

Read price source
Checked 2026-10-05

02 / CONCEPTUAL REFERENCE HOME

One shape. Traceable quantities.

60 FT30 FT4 : 129 FT

30 × 60 ft · 1,800 sq ft

A one-story rectangle with 9 ft exterior walls, a 4 in slab and a simple 4:12 pitched roof. This is a quantity demonstration, not a structural or energy-code design.

Wall calculations omit gables and interior walls. Roof calculations omit overhang unless you enter it. Framing stock needs your own count.

Bare slab volume22.222 yd³1,800 × (4 ÷ 12) ÷ 27; before allowance
Net wall plane1,620 sq ft180 ft perimeter × 9 ft, less entered openings
Roof surface1,897.367 sq ftPlan area with overhang × √(1 + (4/12)²)

03 / EDIT THE PRICE, KEEP THE EVIDENCE

A limited material kit

These five lines are a starting worksheet. Every row states its quantity basis. Insulation needs a new quote because its current source price could not be confirmed. Adding a price never turns this into a complete house budget.

Four-inch slab concrete

Ready-mix material price not observed

Geometric slab volume plus entered allowance; ready-mix material unit price needed. No footings, reinforcement, delivery or placement.

Calculated quantity23.334cubic yard
Price needed—

Perimeter wall panels

Net rectangular wall area plus entered waste, divided by 32 sq ft and rounded up. Gables, interior walls and roof deck excluded.

Calculated quantity5632 sq ft sheet
Material amount$763.28

Roof field shingles

Architectural asphalt shingles, 33.33 sq ft per bundle

Simple equal-pitch roof surface, including entered overhang, plus waste; rounded to 33.33-sq-ft bundles. No roof accessories.

Calculated quantity6333.33 sq ft bundle
Material amount$2,802.24

Wall insulation material

15 in × 32 ft, 40 sq ft per roll, model RF10

Gross wall plane less entered openings, plus waste. Studs not deducted. Material-area comparison, not an energy design or cavity takeoff.

Calculated quantity4540 sq ft roll
Price needed—

Selected framing stock

Your entered board count only. No automatic complete framing takeoff.

Quantity needed—
Partial raw-material subtotal$3,565.52

2 of 5 selected lines have a valid quantity and price. This is a line count, not a percentage of home-cost coverage.

The unpriced scope remains open.

Tax, delivery, labor, the complete structural system and interior construction remain outside this subtotal. There is no whole-home cost or cost-per-square-foot claim.

04 / MAKE THE MISSING SCOPE VISIBLE

The rest of the build still needs pricing

  • Land, survey, engineering, permits and utility connections
  • Site preparation, excavation, footings, reinforcement, vapor barrier and slab labor
  • Complete framing, headers, trusses, structural connectors and roof decking
  • Weather barriers, siding, windows, exterior doors, flashing and roof accessories
  • Ceiling insulation, drywall, mechanical, electrical and plumbing
  • Cabinets, flooring, paint, fixtures, appliances and interior finish work
  • Tax, delivery, equipment, all installation labor, overhead, finance and selling costs
Read the source and quantity method

Two manual source checks: September 6 and October 5, 2026. Nine October prices were visible on official retailer category or supplier pages retrieved that day. The R-13 page did not expose a current price, so its September value is preserved in history and excluded from current calculations. Review dates are retrieval dates, not supplier quote or price-change dates. No automated price refresh.

USD, listed single-unit material price. Tax, delivery, installation and project-specific discounts are excluded from calculations. Alternatives are separate products with different system requirements; their panel prices alone do not establish whole-system savings.

Material area is divided by published sheet, roll or bundle coverage and rounded up to whole units. Slab order volume is rounded upward to 0.001 cubic yard; actual supplier minimums and order increments still need confirmation. Displayed decimal areas are rounded only for readability.

Changing a field creates a private assumption. Public prices are a small convenience sample, not an average, paid transaction dataset or community quote network. Two dated checks are available, but a difference in an unpinned web price does not establish a local market price change.

Your project inputs stay in this browser unless you explicitly export or share them. Public source requests do not include your budgets.