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* Hyderabad Interior Design Cost Calibration Data — 2026
*
* Pricing seeded from publicly available package data on:
* - Livspace Hyderabad packages (livspace.com/in/magazine/interior-design-cost-hyderabad)
* - HomeLane Hyderabad packages (homelane.com/design-ideas/interior-design-cost-hyderabad)
* - Local contractor survey data (Interioring pro network, Q1 2026)
*
* All ranges in INR (paise-free). "Low" = 10th percentile, "High" = 90th percentile
* for that tier in Hyderabad South zone (base multiplier 1.0×).
*
* NOTE: These are per-project room costs, not per-sqft. Each row is independent.
* BHK count drives which rooms are included (see ROOMS_BY_BHK in calculator.ts).
*/
export type Tier = "essentials" | "comfort" | "premium" | "luxury";
export type RoomType =
| "kitchen"
| "living"
| "master_bedroom"
| "bedroom"
| "bathroom"
| "pooja"
| "dining"
| "utility";
interface CostCell {
bhk: 1 | 2 | 3 | 4 | 5;
tier: Tier;
room: RoomType;
/** [low INR, high INR] */
range: [number, number];
}
// ─── Kitchen ─────────────────────────────────────────────────────────────────
// Essentials: laminates, basic modular, HDF cabinets, standard fittings
// Comfort: BWR plywood, soft-close, better laminates, chimney + hob
// Premium: marine ply, PU finish, Hettich/Hafele hardware, built-in appliances
// Luxury: imported acrylic/glass, Blum, premium appliances, island counter
// Kitchen size doesn't change much by BHK (1-3 BHK similar; 4+ slightly bigger)
const KITCHEN: Record<Tier, [number, number]> = {
essentials: [100_000, 200_000],
comfort: [200_000, 400_000],
premium: [400_000, 800_000],
luxury: [800_000, 1_500_000],
};
// ─── Living Room ─────────────────────────────────────────────────────────────
// Includes: TV unit, false ceiling, wall panel, sofa (Comfort+), lighting
// Scales with BHK (larger flat = larger living area)
const LIVING: Record<Tier, Record<1 | 2 | 3 | 4 | 5, [number, number]>> = {
essentials: {
1: [40_000, 80_000],
2: [50_000, 100_000],
3: [70_000, 130_000],
4: [90_000, 160_000],
5: [120_000, 200_000],
},
comfort: {
1: [80_000, 160_000],
2: [100_000, 200_000],
3: [140_000, 260_000],
4: [180_000, 320_000],
5: [220_000, 400_000],
},
premium: {
1: [160_000, 300_000],
2: [200_000, 380_000],
3: [280_000, 520_000],
4: [360_000, 640_000],
5: [440_000, 800_000],
},
luxury: {
1: [300_000, 600_000],
2: [380_000, 750_000],
3: [520_000, 1_000_000],
4: [640_000, 1_250_000],
5: [800_000, 1_600_000],
},
};
// ─── Master Bedroom ───────────────────────────────────────────────────────────
// Includes: wardrobe, false ceiling, cot (Comfort+), dressing unit (Premium+)
const MASTER_BEDROOM: Record<Tier, [number, number]> = {
essentials: [50_000, 100_000],
comfort: [100_000, 200_000],
premium: [200_000, 400_000],
luxury: [350_000, 700_000],
};
// ─── Additional Bedroom ───────────────────────────────────────────────────────
// Each additional bedroom (kids/guest) — slightly smaller than master
const BEDROOM: Record<Tier, [number, number]> = {
essentials: [40_000, 80_000],
comfort: [80_000, 160_000],
premium: [160_000, 320_000],
luxury: [280_000, 560_000],
};
// ─── Bathroom ─────────────────────────────────────────────────────────────────
// Includes: vanity unit, tiles, fittings. Excludes civil (Essentials/Comfort)
// Premium+: designer tiles, branded fittings (Jaquar/Kohler)
const BATHROOM: Record<Tier, [number, number]> = {
essentials: [30_000, 60_000],
comfort: [60_000, 120_000],
premium: [120_000, 250_000],
luxury: [250_000, 500_000],
};
// ─── Pooja Room ───────────────────────────────────────────────────────────────
// Pooja unit / mandir niche
const POOJA: Record<Tier, [number, number]> = {
essentials: [20_000, 50_000],
comfort: [50_000, 100_000],
premium: [100_000, 200_000],
luxury: [200_000, 400_000],
};
// ─── Dining Area ──────────────────────────────────────────────────────────────
// Dining table + chairs + crockery unit (Comfort+)
const DINING: Record<Tier, [number, number]> = {
essentials: [30_000, 60_000],
comfort: [60_000, 120_000],
premium: [120_000, 240_000],
luxury: [250_000, 500_000],
};
// ─── Utility Area ─────────────────────────────────────────────────────────────
// Washing machine platform, drying area, cabinets
const UTILITY: Record<Tier, [number, number]> = {
essentials: [15_000, 35_000],
comfort: [35_000, 70_000],
premium: [70_000, 140_000],
luxury: [150_000, 300_000],
};
// ─── Build the flat cell table ────────────────────────────────────────────────
// We generate cells for all BHK × tier × room combinations.
// Rooms that don't vary by BHK use the same range across all BHK values.
const TIERS: Tier[] = ["essentials", "comfort", "premium", "luxury"];
const BHKS = [1, 2, 3, 4, 5] as const;
const CALIBRATION: CostCell[] = BHKS.flatMap((bhk) =>
TIERS.flatMap((tier): CostCell[] => [
{ bhk, tier, room: "kitchen", range: KITCHEN[tier] },
{ bhk, tier, room: "living", range: LIVING[tier][bhk] },
{ bhk, tier, room: "master_bedroom", range: MASTER_BEDROOM[tier] },
{ bhk, tier, room: "bedroom", range: BEDROOM[tier] },
{ bhk, tier, room: "bathroom", range: BATHROOM[tier] },
{ bhk, tier, room: "pooja", range: POOJA[tier] },
{ bhk, tier, room: "dining", range: DINING[tier] },
{ bhk, tier, room: "utility", range: UTILITY[tier] },
]),
);
/** Convenience lookup: get range for a specific cell */
export function getCellRange(
bhk: 1 | 2 | 3 | 4 | 5,
tier: Tier,
room: RoomType,
): [number, number] {
const cell = CALIBRATION.find(
(c) => c.bhk === bhk && c.tier === tier && c.room === room,
);
Iif (!cell) {
// Fallback to BHK=1 if somehow not found
return [0, 0];
}
return cell.range;
}
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