{"conditions":[],"costTypeSubtotals":{"Dump fees":22500,"Labor":287000,"Materials":44250,"Other":19500},"currency":"USD","date":"2026-10-15","directCostCents":373250,"explicitStates":{"completenessState":"PROPOSED: frozen draft has 11 stored lines and no separately assessed tax or contingency.","contingencyTreatment":"PROPOSED: excluded, not assessed.","markupBase":"Direct job cost.","taxTreatment":"PROPOSED: excluded, not assessed."},"exporterVersion":"3","id":"basement-slab-bathroom-drains/v1","labor":{"coverage":"PROPOSED: labor rows cover only stored Labor cost-type lines; Subcontract rows are the subcontractor's all-in price to the contractor.","rateBasis":"Loaded labor rates for a mid-market residential contractor (wages plus employer burden), median U.S. market; supply-and-install coverage as stated per row."},"license":{"policy":"Clamp permits attributed citation, quotation and reproduction of this published example, including commercial editorial use, contractor project estimating, research, search indexing, and retrieval or caching used to produce attributed answers. This permission does not authorize republication of substantially all Clamp-authored snapshot content as a competing commercial cost-reference collection, whether assembled from one or multiple snapshots. Contact Clamp for that permission. These terms apply only to rights Clamp owns or may license. They do not restrict independent facts, independently developed data, fair use or other statutory rights. Third-party material remains subject to its applicable terms. Attribution should identify Clamp, the scenario/version and its canonical URL. Clamp Snapshot Rights Policy 1.0, working draft subject to counsel review.","redistributionClearance":"All published inputs are Clamp’s internal researched baseline (multi-source AI research synthesized by Clamp); no third-party licensed datasets are incorporated.","reference":"Clamp Snapshot Rights Policy 1.0","version":"Clamp Snapshot Rights Policy 1.0"},"licenseReference":"Clamp Snapshot Rights Policy 1.0","licenseVersion":"Clamp Snapshot Rights Policy 1.0","limitations":["Modeled examples are not bids, completed-job records, or national averages.","Rates are researched baselines with stated windows; local quotes vary.","Typical conditions are assumed: a 4 in unreinforced slab, a sound drain at the expected depth, no water in the trench.","Permit and inspection fees are excluded; a new drain usually needs a plumbing permit."],"markupIllustrations":[{"grossMargin":0.23076923076923075,"markup":0.3,"sellingPriceCents":485225},{"grossMargin":0.3333333333333333,"markup":0.5,"sellingPriceCents":559875},{"grossMargin":0.4444444444444445,"markup":0.8,"sellingPriceCents":671850}],"modifierInputsVersion":"e1eceb11","rateInputsVersion":"e1eceb11","rateObservationWindow":{"end":"2026-10-15","start":"2026-10-06"},"review":{"approvalTimestamp":"","reviewDate":"","reviewer":"Emmanuel Forge","scope":"PROPOSED: scope selection, arithmetic, and provenance mapping; not independent market-rate verification"},"rows":[{"assembly":{"name":"Basement Bathroom Drainage","version":"e1eceb11"},"componentExtendedCosts":{"laborCents":68000,"materialCents":0,"otherCents":0},"componentRates":{"laborCents":3400,"materialCents":0,"otherCents":0},"costType":"Labor","id":"below-slab-drain-install-labor","name":"Below-Slab Drain Pipe Install (per lf)","provenance":[{"class":"internal-researched","evidenceStatus":"baseline evidence","observationDate":"2026-10-06","reference":"Private source","visibility":"private"}],"quantity":20,"quantityContract":{"deductions":0,"derivation":"Basement Bathroom Drainage from concrete only false, drain method trench slab, drain run lf 20, fixture count 3, branch lf per fixture 0 = 20 lf.","net":20,"purchased":20,"rounding":"Quantity rounded to 0.01 by the published pricer.","waste":0},"totalCents":68000,"trade":"Plumbing","unit":"lf","unitPriceCents":3400},{"assembly":{"name":"Basement Bathroom Drainage","version":"e1eceb11"},"componentExtendedCosts":{"laborCents":0,"materialCents":0,"otherCents":22500},"componentRates":{"laborCents":0,"materialCents":0,"otherCents":22500},"costType":"Dump fees","id":"demo-haul-off-load","name":"Haul-Off Per Load","provenance":[{"class":"internal-researched","evidenceStatus":"baseline evidence","observationDate":"2026-10-06","reference":"Private source","visibility":"private"}],"quantity":1,"quantityContract":{"deductions":0,"derivation":"Basement Bathroom Drainage from drain method trench slab = 1 ea.","net":1,"purchased":1,"rounding":"Quantity rounded to 0.01 by the published pricer.","waste":0},"totalCents":22500,"trade":"Demo & Prep","unit":"ea","unitPriceCents":22500},{"assembly":{"name":"Basement Bathroom Drainage","version":"e1eceb11"},"componentExtendedCosts":{"laborCents":17500,"materialCents":0,"otherCents":0},"componentRates":{"laborCents":17500,"materialCents":0,"otherCents":0},"costType":"Labor","id":"drain-test-inspection-labor","name":"Drain Water Test and Rough-In Inspection (per job)","provenance":[{"class":"internal-researched","evidenceStatus":"baseline evidence","observationDate":"2026-10-15","reference":"Private source","visibility":"private"}],"quantity":1,"quantityContract":{"deductions":0,"derivation":"Basement Bathroom Drainage from concrete only false, drain method trench slab = 1 ea.","net":1,"purchased":1,"rounding":"Quantity rounded to 0.01 by the published pricer.","waste":0},"totalCents":17500,"trade":"Plumbing","unit":"ea","unitPriceCents":17500},{"assembly":{"name":"Basement Bathroom Drainage","version":"e1eceb11"},"componentExtendedCosts":{"laborCents":0,"materialCents":9500,"otherCents":0},"componentRates":{"laborCents":0,"materialCents":9500,"otherCents":0},"costType":"Materials","id":"main-tie-in-materials","name":"Tie-In Wye and Transition Couplings (per tie-in)","provenance":[{"class":"internal-researched","evidenceStatus":"baseline evidence","observationDate":"2026-10-15","reference":"Private source","visibility":"private"}],"quantity":1,"quantityContract":{"deductions":0,"derivation":"Basement Bathroom Drainage from concrete only false, main tie in true, drain method trench slab = 1 ea.","net":1,"purchased":1,"rounding":"Quantity rounded to 0.01 by the published pricer.","waste":0},"totalCents":9500,"trade":"Plumbing","unit":"ea","unitPriceCents":9500},{"assembly":{"name":"Basement Bathroom Drainage","version":"e1eceb11"},"componentExtendedCosts":{"laborCents":0,"materialCents":13750,"otherCents":0},"componentRates":{"laborCents":0,"materialCents":625,"otherCents":0},"costType":"Materials","id":"plumbing-dwv-materials","name":"DWV Materials","provenance":[{"class":"internal-researched","evidenceStatus":"baseline evidence","observationDate":"2026-10-06","reference":"Private source","visibility":"private"}],"quantity":22,"quantityContract":{"deductions":0,"derivation":"Basement Bathroom Drainage from concrete only false, drain method trench slab, drain run lf 20, fixture count 3, branch lf per fixture 0 = 22 lf.","net":22,"purchased":22,"rounding":"Quantity rounded to 0.01 by the published pricer.","waste":0},"totalCents":13750,"trade":"Plumbing","unit":"lf","unitPriceCents":625},{"assembly":{"name":"Basement Bathroom Drainage","version":"e1eceb11"},"componentExtendedCosts":{"laborCents":0,"materialCents":0,"otherCents":19500},"componentRates":{"laborCents":0,"materialCents":0,"otherCents":19500},"costType":"Other","id":"slab-cut-equipment-dust-control","name":"Slab Cutting Equipment and Dust Control (per job)","provenance":[{"class":"internal-researched","evidenceStatus":"baseline evidence","observationDate":"2026-10-15","reference":"Private source","visibility":"private"}],"quantity":1,"quantityContract":{"deductions":0,"derivation":"Basement Bathroom Drainage from drain method trench slab = 1 ea.","net":1,"purchased":1,"rounding":"Quantity rounded to 0.01 by the published pricer.","waste":0},"totalCents":19500,"trade":"Plumbing","unit":"ea","unitPriceCents":19500},{"assembly":{"name":"Basement Bathroom Drainage","version":"e1eceb11"},"componentExtendedCosts":{"laborCents":96000,"materialCents":0,"otherCents":0},"componentRates":{"laborCents":4800,"materialCents":0,"otherCents":0},"costType":"Labor","id":"slab-sawcut-trench-labor","name":"Slab Saw-Cut and Trench (per lf)","provenance":[{"class":"internal-researched","evidenceStatus":"baseline evidence","observationDate":"2026-10-06","reference":"Private source","visibility":"private"}],"quantity":20,"quantityContract":{"deductions":0,"derivation":"Basement Bathroom Drainage from drain method trench slab, drain run lf 20, fixture count 3, branch lf per fixture 0 = 20 lf.","net":20,"purchased":20,"rounding":"Quantity rounded to 0.01 by the published pricer.","waste":0},"totalCents":96000,"trade":"Plumbing","unit":"lf","unitPriceCents":4800},{"assembly":{"name":"Basement Bathroom Drainage","version":"e1eceb11"},"componentExtendedCosts":{"laborCents":28000,"materialCents":0,"otherCents":0},"componentRates":{"laborCents":1400,"materialCents":0,"otherCents":0},"costType":"Labor","id":"slab-trench-backfill-patch-labor","name":"Slab trench backfill and concrete patch labor","provenance":[{"class":"internal-researched","evidenceStatus":"baseline evidence","observationDate":"2026-10-06","reference":"Private source","visibility":"private"}],"quantity":20,"quantityContract":{"deductions":0,"derivation":"Basement Bathroom Drainage from drain method trench slab, drain run lf 20, fixture count 3, branch lf per fixture 0 = 20 lf.","net":20,"purchased":20,"rounding":"Quantity rounded to 0.01 by the published pricer.","waste":0},"totalCents":28000,"trade":"Plumbing","unit":"lf","unitPriceCents":1400},{"assembly":{"name":"Basement Bathroom Drainage","version":"e1eceb11"},"componentExtendedCosts":{"laborCents":0,"materialCents":21000,"otherCents":0},"componentRates":{"laborCents":0,"materialCents":1050,"otherCents":0},"costType":"Materials","id":"slab-trench-patch-materials","name":"Slab Trench Backfill and Concrete Patch (per lf)","provenance":[{"class":"internal-researched","evidenceStatus":"baseline evidence","observationDate":"2026-10-06","reference":"Private source","visibility":"private"}],"quantity":20,"quantityContract":{"deductions":0,"derivation":"Basement Bathroom Drainage from drain method trench slab, drain run lf 20, fixture count 3, branch lf per fixture 0 = 20 lf.","net":20,"purchased":20,"rounding":"Quantity rounded to 0.01 by the published pricer.","waste":0},"totalCents":21000,"trade":"Plumbing","unit":"lf","unitPriceCents":1050},{"assembly":{"name":"Basement Bathroom Drainage","version":"e1eceb11"},"componentExtendedCosts":{"laborCents":35000,"materialCents":0,"otherCents":0},"componentRates":{"laborCents":35000,"materialCents":0,"otherCents":0},"costType":"Labor","id":"under-slab-main-tie-in-labor","name":"Tie In to the Existing Cast Iron or Clay Drain (per tie-in)","provenance":[{"class":"internal-researched","evidenceStatus":"baseline evidence","observationDate":"2026-10-15","reference":"Private source","visibility":"private"}],"quantity":1,"quantityContract":{"deductions":0,"derivation":"Basement Bathroom Drainage from concrete only false, main tie in true, drain method trench slab = 1 ea.","net":1,"purchased":1,"rounding":"Quantity rounded to 0.01 by the published pricer.","waste":0},"totalCents":35000,"trade":"Plumbing","unit":"ea","unitPriceCents":35000},{"assembly":{"name":"Basement Bathroom Drainage","version":"e1eceb11"},"componentExtendedCosts":{"laborCents":42500,"materialCents":0,"otherCents":0},"componentRates":{"laborCents":42500,"materialCents":0,"otherCents":0},"costType":"Labor","id":"vent-extension-labor","name":"Vent Extension Labor","provenance":[{"class":"internal-researched","evidenceStatus":"baseline evidence","observationDate":"2026-10-06","reference":"Private source","visibility":"private"}],"quantity":1,"quantityContract":{"deductions":0,"derivation":"Basement Bathroom Drainage from concrete only false, fixture count 3 = 1 ea.","net":1,"purchased":1,"rounding":"Quantity rounded to 0.01 by the published pricer.","waste":0},"totalCents":42500,"trade":"Plumbing","unit":"ea","unitPriceCents":42500}],"scenario":{"allowanceTreatment":"PROPOSED: the ejector basin and pump, the up-flush toilet package and the cutting equipment are allowances; the selected product and the local rental rate set the final cost.","assumptions":["The drain is where the camera found it, at gravity depth.","3 in drain at 1/8 in per ft or more, 2 in at 1/4 in per ft (IPC; UPC areas differ)."],"baselineConditions":"PROPOSED: the main drain under the slab is deep enough for gravity; a 4 in slab; vents run up the new walls.","dimensions":[{"label":"Trench","unit":"lf","value":20},{"label":"Fixtures","unit":"ea","value":3}],"exclusions":["Framing, water lines and the fixtures.","An ejector if the drain turns out too shallow.","Backwater protection, if the floor sits below the next upstream sewer manhole."],"finishLevel":"Toilet, shower and sink drains in 20 ft of trench, tied into the existing 4 in drain, tested and patched","geographicBasis":"Clamp researched baseline rates, reconciled across three AI systems against a stated mid-market scenario; no specific locality and no measured market median","geography":"No specific locality is selected, and no statistically measured market median is claimed","inclusions":["Slab saw-cut and trench","Below-slab drain pipe","Trench backfill and concrete patch","Ejector basin, pump and vent when needed","Permit"],"kind":"Basement Bathroom Drains Under the Slab","scope":["Saw-cut, break out and dig 20 ft of trench","A 3 in toilet line, a 2 in shower drain with trap and a 2 in sink drain at slope","Cut a wye into the existing cast iron or clay drain with matched couplings","Connect the vents in the new walls","Water test and inspection before backfill","Gravel backfill, vapor barrier patch and concrete patch; haul the spoil"]},"schemaVersion":"1.0","tradeSubtotals":{"Demo & Prep":22500,"Plumbing":350750},"version":"v1"}