/**
* Additional Costs Constants
* Non-material, non-labor costs for construction projects
* Includes dumpsters, disposal, equipment rental, protection, and miscellaneous
*/
import type { JobType } from '../types/calculations.types.js';
// ============================================================================
// Dumpster Rental Costs
// ============================================================================
/**
* Dumpster rental costs by size (Connecticut pricing, 2024/2025)
* Includes delivery, pickup, and 7-day rental period
*/
export const DUMPSTER_COSTS = {
'10_yard': {
size_description: '10 cubic yards (12\' x 8\' x 4\')',
capacity_sqft: 1000, // Suitable for projects up to 1000 sqft
rental_cost: 300,
weight_limit_tons: 2,
overage_cost_per_ton: 75,
typical_use: 'Small roof or siding job, 1-2 rooms',
dimensions: '12\' L x 8\' W x 4\' H'
},
'20_yard': {
size_description: '20 cubic yards (22\' x 8\' x 4\')',
capacity_sqft: 2500, // Suitable for projects up to 2500 sqft
rental_cost: 400,
weight_limit_tons: 3,
overage_cost_per_ton: 75,
typical_use: 'Medium roof or siding job, 3-4 rooms',
dimensions: '22\' L x 8\' W x 4\' H'
},
'30_yard': {
size_description: '30 cubic yards (22\' x 8\' x 6\')',
capacity_sqft: 4000, // Suitable for projects up to 4000 sqft
rental_cost: 500,
weight_limit_tons: 4,
overage_cost_per_ton: 75,
typical_use: 'Large roof or full house siding, 5+ rooms',
dimensions: '22\' L x 8\' W x 6\' H'
},
'40_yard': {
size_description: '40 cubic yards (22\' x 8\' x 8\')',
capacity_sqft: 6000, // Suitable for projects up to 6000 sqft
rental_cost: 650,
weight_limit_tons: 5,
overage_cost_per_ton: 75,
typical_use: 'Very large project, commercial, or multi-unit',
dimensions: '22\' L x 8\' W x 8\' H'
}
};
/**
* Additional dumpster fees
*/
export const DUMPSTER_ADDITIONAL_FEES = {
extended_rental: {
cost_per_day: 15,
description: 'Fee for each day beyond initial 7-day period'
},
placement_difficulty: {
cost: 50,
description: 'Additional fee for difficult placement (tight spaces, long driveway)'
},
permit_fee: {
cost: 50,
description: 'Required if dumpster placed on public street',
required_when: 'Street placement in most CT municipalities'
},
hazardous_materials: {
multiplier: 2.0,
description: 'Double fee for hazardous material disposal'
}
};
// ============================================================================
// Disposal & Dump Fees
// ============================================================================
/**
* Material disposal costs by type (per ton)
* Connecticut landfill and transfer station fees
*/
export const DISPOSAL_COSTS = {
general_construction_debris: {
cost_per_ton: 80,
description: 'General construction and demolition debris',
typical_materials: ['Wood', 'Drywall', 'Insulation', 'General waste']
},
roofing_shingles: {
cost_per_ton: 65,
description: 'Asphalt roofing shingles',
typical_materials: ['Asphalt shingles', 'Underlayment'],
notes: 'Lower cost due to recycling programs'
},
metal_roofing: {
cost_per_ton: -50, // Negative = revenue from scrap
description: 'Metal roofing materials (scrap value)',
typical_materials: ['Steel', 'Aluminum', 'Copper'],
notes: 'Can generate revenue from scrap metal dealers'
},
vinyl_siding: {
cost_per_ton: 85,
description: 'Vinyl siding and trim',
typical_materials: ['Vinyl siding', 'PVC trim']
},
wood_siding: {
cost_per_ton: 70,
description: 'Wood siding and trim',
typical_materials: ['Wood siding', 'Wood trim', 'Plywood']
},
windows_doors: {
cost_per_ton: 90,
description: 'Old windows and doors',
typical_materials: ['Glass', 'Vinyl frames', 'Wood frames', 'Hardware']
},
concrete_masonry: {
cost_per_ton: 50,
description: 'Concrete and masonry materials',
typical_materials: ['Concrete', 'Brick', 'Block', 'Stone'],
notes: 'Often recycled into aggregate'
},
hazardous_materials: {
cost_per_ton: 250,
description: 'Hazardous material disposal',
typical_materials: ['Asbestos', 'Lead paint', 'Chemical waste'],
notes: 'Requires special handling and certified disposal'
}
};
/**
* Material weight estimates (pounds per unit)
*/
export const MATERIAL_WEIGHT_ESTIMATES = {
roofing: {
architectural_shingles_per_square: 250, // lbs per 100 sqft
tab3_shingles_per_square: 200, // 3-tab shingles
underlayment_per_square: 30,
old_roof_layers_multiplier: 1.0,
total_weight_per_square: 280 // Average with all materials
},
siding: {
vinyl_per_100sqft: 85,
fiber_cement_per_100sqft: 200,
wood_per_100sqft: 150,
trim_per_lf: 2
},
windows: {
standard_window_unit: 50,
large_window_unit: 80,
bay_window_unit: 150
},
doors: {
interior_door: 50,
exterior_door: 80,
sliding_door: 150
}
};
// ============================================================================
// Equipment Rental Costs
// ============================================================================
/**
* Equipment rental costs (Connecticut rates, 2024/2025)
*/
export const EQUIPMENT_RENTAL_COSTS = {
scaffolding: {
cost_per_day: 75,
cost_per_week: 300,
cost_per_month: 900,
setup_fee: 200,
description: 'Frame scaffolding with platforms',
typical_use: 'Multi-story buildings, difficult roof access',
unit: 'Per section (5\' x 7\' x 6.5\')'
},
aerial_lift: {
cost_per_day: 250,
cost_per_week: 1000,
cost_per_month: 3000,
delivery_fee: 150,
description: 'Boom lift or scissor lift',
typical_use: 'High buildings, commercial work',
unit: 'Per lift (30-40\' reach)'
},
ladder_jacks: {
cost_per_day: 40,
cost_per_week: 150,
description: 'Ladder jack system with planks',
typical_use: 'Simple 2-story siding or painting'
},
roofing_jack_system: {
cost_per_day: 30,
cost_per_week: 100,
description: 'Roof jacks and planks',
typical_use: 'Steep roof work'
},
compressor_nail_guns: {
cost_per_day: 60,
cost_per_week: 200,
description: 'Air compressor and roofing nailers',
typical_use: 'Roofing and siding installation'
},
power_tools: {
cost_per_day: 40,
cost_per_week: 125,
description: 'Circular saw, miter saw, drills, etc.',
typical_use: 'All construction work'
},
material_hoist: {
cost_per_day: 100,
cost_per_week: 400,
description: 'Electric material hoist',
typical_use: 'Multi-story material delivery'
},
roofing_conveyor: {
cost_per_day: 150,
cost_per_week: 500,
description: 'Shingle conveyor belt',
typical_use: 'Large roofing jobs, reduces labor'
},
dumpster_crane: {
cost_per_use: 300,
description: 'Crane service for dumpster placement',
typical_use: 'Difficult access locations'
}
};
// ============================================================================
// Protection & Safety Costs
// ============================================================================
/**
* Protection materials and safety equipment costs
*/
export const PROTECTION_COSTS = {
ground_protection: {
cost_per_100sqft: 50,
description: 'Tarps, plywood, or protective sheeting for landscaping, driveway, deck',
typical_use: 'Protect valuable surfaces during work'
},
window_protection: {
cost_per_window: 5,
description: 'Plastic or cardboard window protection',
typical_use: 'Protect windows during exterior work'
},
dust_barriers: {
cost_per_100sqft: 30,
description: 'Plastic sheeting and zipper doors for interior work',
typical_use: 'Contain dust during interior demolition'
},
roof_tarp: {
cost_per_square: 15,
description: 'Emergency roof tarps',
typical_use: 'Protect open roof during multi-day projects or weather delays'
},
safety_equipment: {
fall_protection_per_worker: 200,
first_aid_kit: 50,
fire_extinguisher: 40,
description: 'Personal protective equipment, harnesses, ropes, anchors'
},
temporary_fencing: {
cost_per_10ft_section: 25,
cost_per_day: 5,
description: 'Temporary construction fencing',
typical_use: 'Secure work area, protect pedestrians'
}
};
// ============================================================================
// Miscellaneous Costs
// ============================================================================
/**
* Other miscellaneous costs that may apply
*/
export const MISCELLANEOUS_COSTS = {
temporary_utilities: {
electricity_per_month: 150,
water_per_month: 75,
portable_toilet_per_month: 150,
description: 'Temporary utility hookups and facilities'
},
fuel_surcharge: {
percentage_of_materials: 0.03, // 3% of material costs
description: 'Fuel surcharge for material delivery and job site travel'
},
cleanup_supplies: {
cost_per_job: 75,
description: 'Brooms, bags, cleaning supplies, magnetic sweeper'
},
signage: {
yard_sign: 50,
banner: 150,
description: 'Job site signage for marketing'
},
photography: {
before_after_photos: 100,
drone_photos: 250,
description: 'Professional photography for marketing'
},
porta_potty: {
cost_per_week: 150,
cost_per_month: 450,
delivery_fee: 75,
description: 'Portable toilet rental'
},
storage_container: {
cost_per_month: 150,
delivery_fee: 100,
description: '20\' storage container for tools and materials'
}
};
// ============================================================================
// Job-Type Specific Additional Costs
// ============================================================================
/**
* Typical additional costs by job type
*/
export const TYPICAL_ADDITIONAL_COSTS_BY_JOB: Record<JobType, {
dumpster_required: boolean;
typical_dumpster_size: keyof typeof DUMPSTER_COSTS | null;
equipment_needed: string[];
protection_needed: string[];
estimated_additional_cost_percentage: number; // % of material+labor
notes: string;
}> = {
roofing: {
dumpster_required: true,
typical_dumpster_size: '20_yard',
equipment_needed: ['Roofing jack system', 'Compressor and nail guns', 'Ladder jacks'],
protection_needed: ['Ground protection', 'Roof tarp (weather contingency)'],
estimated_additional_cost_percentage: 0.08, // 8% of material+labor
notes: 'Roofing generates significant debris; dumpster is essential'
},
siding: {
dumpster_required: true,
typical_dumpster_size: '30_yard',
equipment_needed: ['Scaffolding or ladder jacks', 'Compressor and nail guns'],
protection_needed: ['Ground protection', 'Window protection'],
estimated_additional_cost_percentage: 0.10, // 10% of material+labor
notes: 'Full siding replacement generates large volume of debris'
},
windows: {
dumpster_required: false,
typical_dumpster_size: null,
equipment_needed: ['Ladder', 'Power tools'],
protection_needed: ['Ground protection', 'Interior floor protection'],
estimated_additional_cost_percentage: 0.04, // 4% of material+labor
notes: 'Window debris is minimal; can use pickup truck for disposal'
},
doors: {
dumpster_required: false,
typical_dumpster_size: null,
equipment_needed: ['Power tools', 'Ladder'],
protection_needed: ['Floor protection'],
estimated_additional_cost_percentage: 0.03, // 3% of material+labor
notes: 'Minimal debris; typically hauled away in work vehicle'
},
gutters: {
dumpster_required: false,
typical_dumpster_size: null,
equipment_needed: ['Ladder', 'Gutter machine (if seamless)'],
protection_needed: ['Ground protection'],
estimated_additional_cost_percentage: 0.05, // 5% of material+labor
notes: 'Old gutters minimal waste; can be recycled if metal'
},
general_construction: {
dumpster_required: true,
typical_dumpster_size: '30_yard',
equipment_needed: ['Scaffolding', 'Power tools', 'Material hoist'],
protection_needed: ['Ground protection', 'Dust barriers', 'Window protection'],
estimated_additional_cost_percentage: 0.12, // 12% of material+labor
notes: 'Varies widely depending on scope; plan for contingency'
}
};
// ============================================================================
// Access & Logistics Costs
// ============================================================================
/**
* Additional costs based on site access and logistics
*/
export const ACCESS_LOGISTICS_COSTS = {
difficult_access: {
premium_percentage: 0.15, // 15% premium
description: 'Difficult site access requiring extra time/equipment',
examples: ['Steep driveway', 'No driveway access', 'Gated community', 'Urban location']
},
high_elevation: {
cost_per_story_over_2: 200,
description: 'Additional cost for buildings over 2 stories',
notes: 'Requires additional safety equipment and slower work pace'
},
limited_parking: {
parking_permit_cost: 100,
description: 'Cost to obtain parking permits in urban areas'
},
hoa_requirements: {
application_fee: 150,
description: 'HOA application and approval fee',
notes: 'Some HOAs charge review fees for exterior modifications'
},
historic_district: {
application_fee: 200,
consultant_fee: 500,
description: 'Historic district approval process',
notes: 'May require architectural review and special materials'
}
};
// ============================================================================
// Insurance & Bonding Costs
// ============================================================================
/**
* Insurance and bonding costs (typically built into overhead, but listed for reference)
*/
export const INSURANCE_BONDING_COSTS = {
performance_bond: {
percentage_of_contract: 0.01, // 1% for contracts under $100k
minimum_cost: 500,
description: 'Performance bond (may be required for commercial or municipal projects)'
},
builders_risk_insurance: {
percentage_of_project_value: 0.005, // 0.5%
description: 'Builders risk insurance for project duration'
},
additional_insured_certificate: {
cost: 50,
description: 'Certificate naming customer as additional insured'
}
};
// ============================================================================
// Helper Functions
// ============================================================================
/**
* Recommend dumpster size based on project area
*/
export function recommendDumpsterSize(jobType: JobType, area_sqft: number): keyof typeof DUMPSTER_COSTS | null {
const jobDefaults = TYPICAL_ADDITIONAL_COSTS_BY_JOB[jobType];
if (!jobDefaults.dumpster_required) return null;
// Size based on area
if (area_sqft <= 1000) return '10_yard';
if (area_sqft <= 2500) return '20_yard';
if (area_sqft <= 4000) return '30_yard';
return '40_yard';
}
/**
* Calculate disposal weight based on job type and area
*/
export function estimateDisposalWeight(jobType: JobType, area_sqft: number, layers: number = 1): number {
const weights = MATERIAL_WEIGHT_ESTIMATES;
switch (jobType) {
case 'roofing':
const squares = area_sqft / 100;
return (weights.roofing.total_weight_per_square * squares * layers) / 2000; // Convert to tons
case 'siding':
return (weights.siding.vinyl_per_100sqft * (area_sqft / 100)) / 2000;
case 'windows':
case 'doors':
case 'gutters':
return 0.25; // Minimal waste (0.25 tons)
default:
return 1.0; // Default 1 ton for unknown types
}
}
/**
* Calculate total additional costs for a job
*/
export function estimateAdditionalCosts(
jobType: JobType,
area_sqft: number,
materialLaborCost: number,
options: {
stories?: number;
layers?: number;
difficult_access?: boolean;
rental_days?: number;
} = {}
): number {
const jobDefaults = TYPICAL_ADDITIONAL_COSTS_BY_JOB[jobType];
// Base estimate: percentage of material+labor
let totalCost = materialLaborCost * jobDefaults.estimated_additional_cost_percentage;
// Add dumpster if required
if (jobDefaults.dumpster_required) {
const dumpsterSize = recommendDumpsterSize(jobType, area_sqft);
if (dumpsterSize) {
totalCost += DUMPSTER_COSTS[dumpsterSize].rental_cost;
// Check for weight overage
const estimatedWeight = estimateDisposalWeight(jobType, area_sqft, options.layers || 1);
const dumpsterWeight = DUMPSTER_COSTS[dumpsterSize].weight_limit_tons;
if (estimatedWeight > dumpsterWeight) {
const overage = estimatedWeight - dumpsterWeight;
totalCost += overage * DUMPSTER_COSTS[dumpsterSize].overage_cost_per_ton;
}
}
}
// Add story premium
if (options.stories && options.stories > 2) {
const extraStories = options.stories - 2;
totalCost += extraStories * ACCESS_LOGISTICS_COSTS.high_elevation.cost_per_story_over_2;
}
// Add difficult access premium
if (options.difficult_access) {
totalCost += materialLaborCost * ACCESS_LOGISTICS_COSTS.difficult_access.premium_percentage;
}
return Math.round(totalCost);
}
