{"conditions":[],"costTypeSubtotals":{"Dump fees":22500,"Labor":97500,"Materials":29500},"currency":"USD","date":"2026-10-15","directCostCents":149500,"explicitStates":{"completenessState":"PROPOSED: frozen draft has 9 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":"porch-steps-rebuild-3/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.","Permit and inspection fees are excluded; requirements vary by jurisdiction."],"markupIllustrations":[{"grossMargin":0.23076923076923075,"markup":0.3,"sellingPriceCents":194350},{"grossMargin":0.3333333333333333,"markup":0.5,"sellingPriceCents":224250},{"grossMargin":0.4444444444444445,"markup":0.8,"sellingPriceCents":269100}],"modifierInputsVersion":"c965e483","rateInputsVersion":"c965e483","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":"Exterior Stair Repair","version":"c965e483"},"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 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Repair","version":"c965e483"},"componentExtendedCosts":{"laborCents":37500,"materialCents":0,"otherCents":0},"componentRates":{"laborCents":12500,"materialCents":0,"otherCents":0},"costType":"Labor","id":"stair-stringer-fabricate","name":"Stair Stringer Fabrication","provenance":[{"class":"internal-researched","evidenceStatus":"baseline evidence","observationDate":"2026-10-06","reference":"Private source","visibility":"private"}],"quantity":3,"quantityContract":{"deductions":0,"derivation":"Exterior Stair Repair from material wood, stringer count 3 = 3 ea.","net":3,"purchased":3,"rounding":"Quantity rounded to 0.01 by the published pricer.","waste":0},"totalCents":37500,"trade":"Carpentry","unit":"ea","unitPriceCents":12500},{"assembly":{"name":"Exterior Stair Repair","version":"c965e483"},"componentExtendedCosts":{"laborCents":0,"materialCents":4500,"otherCents":0},"componentRates":{"laborCents":0,"materialCents":1500,"otherCents":0},"costType":"Materials","id":"stair-stringer-hanger-materials","name":"Stair Stringer Connector (each)","provenance":[{"class":"internal-researched","evidenceStatus":"baseline evidence","observationDate":"2026-10-15","reference":"Private source","visibility":"private"}],"quantity":3,"quantityContract":{"deductions":0,"derivation":"Exterior Stair Repair from stringer connectors true, stringer count 3 = 3 ea.","net":3,"purchased":3,"rounding":"Quantity rounded to 0.01 by the published pricer.","waste":0},"totalCents":4500,"trade":"Carpentry","unit":"ea","unitPriceCents":1500},{"assembly":{"name":"Exterior Stair Repair","version":"c965e483"},"componentExtendedCosts":{"laborCents":18000,"materialCents":0,"otherCents":0},"componentRates":{"laborCents":6000,"materialCents":0,"otherCents":0},"costType":"Labor","id":"stair-tread-riser-install","name":"Stair Tread and Riser Install","provenance":[{"class":"internal-researched","evidenceStatus":"baseline evidence","observationDate":"2026-10-06","reference":"Private source","visibility":"private"}],"quantity":3,"quantityContract":{"deductions":0,"derivation":"Exterior Stair Repair from material wood, tread count 3 = 3 ea.","net":3,"purchased":3,"rounding":"Quantity rounded to 0.01 by the published pricer.","waste":0},"totalCents":18000,"trade":"Carpentry","unit":"ea","unitPriceCents":6000}],"scenario":{"allowanceTreatment":"PROPOSED: replacement porch boards are an allowance at the treated-lumber baseline price; matching an older board profile sets the final cost.","assumptions":["The porch rim is sound for the stringer connectors.","Three stringers for a 4 ft wide stair.","About 6 ft of graspable handrail on one side.","The pad covers up to about 4 by 3 ft; code calls for a bottom landing at least as wide as the stair and 36 in deep."],"baselineConditions":"PROPOSED: 4 ft wide wood front porch steps that have sunk about 2 in and pulled away from the porch; the porch rim is sound.","dimensions":[{"label":"Stair width","unit":"ft","value":4},{"label":"Steps","unit":"count","value":3},{"label":"Stringers","unit":"count","value":3},{"label":"Handrail","unit":"lf","value":6}],"exclusions":["Porch rim or framing repair.","Painting or staining.","A permit; requirements vary, and many towns treat a like-for-like step rebuild as a repair."],"finishLevel":"Three wood steps on new treated stringers, a concrete pad at the bottom, stringer hangers and one handrail","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":["Removal of damaged treads and risers","Wood stringer repair or sister framing when structurally compromised","Concrete tread patching and surface leveling","New wood tread and riser installation with galvanized fasteners","One haul-off load for removed materials","Dimensional lumber for structural repairs","Code-compliant tread depth and riser height per local building code","Surface preparation for wood or concrete repairs","Concrete repairs: polymer-modified repair mortar, bonding agent and pins, broken corners rebuilt when counted, cure protection"],"kind":"Sunken Porch Steps Rebuilt","scope":["Remove and haul away the old steps","Pour a concrete pad on gravel at the bottom of the steps (up to about 4 by 3 ft)","Cut three new pressure-treated stringers and build three steps","Hang the stringers from the porch rim on galvanized connectors","Add a handrail on one side"]},"schemaVersion":"1.0","tradeSubtotals":{"Carpentry":127000,"Demo & Prep":22500},"version":"v1"}