Residential Construction Cost Calculator
Apply a dated, location-specific construction rate and user-entered allowances. No market rate, regional factor, quality multiplier, fee, contingency, escalation, or external-works percentage is embedded.
Who it's for: architects, owners, and estimators who already have a dated residential construction benchmark rate and need transparent arithmetic — not a market forecast — for a specific quantity and allowance set, at feasibility or schematic design.
Published benchmarks
Residential hard construction cost per square foot by city (RLB), NAHB median price per square foot by region, and Census new-home figures. Pick a row to use it as the entered rate, or enter your own.
| Benchmark | Value | Unit | Edition | Scope | Source | |
|---|---|---|---|---|---|---|
| Single-family, hard construction cost | 195–520 | $/sf | Q1 2026 | Austin, TX | RLB Quarterly Construction Cost Report, North America, Q1 2026 | |
| Single-family, hard construction cost | 300–450 | $/sf | Q1 2026 | Boston, MA | RLB Quarterly Construction Cost Report, North America, Q1 2026 | |
| Single-family, hard construction cost | 285–570 | $/sf | Q1 2026 | Chicago, IL | RLB Quarterly Construction Cost Report, North America, Q1 2026 | |
| Single-family, hard construction cost | 240–420 | $/sf | Q1 2026 | Los Angeles, CA | RLB Quarterly Construction Cost Report, North America, Q1 2026 | |
| Single-family, hard construction cost | 365–730 | $/sf | Q1 2026 | New York, NY | RLB Quarterly Construction Cost Report, North America, Q1 2026 | |
| Single-family, hard construction cost | 275–405 | $/sf | Q1 2026 | Washington, DC | RLB Quarterly Construction Cost Report, North America, Q1 2026 | |
| Multi-family, hard construction cost | 185–275 | $/sf | Q1 2026 | Austin, TX | RLB Quarterly Construction Cost Report, North America, Q1 2026 | |
| Multi-family, hard construction cost | 290–390 | $/sf | Q1 2026 | Boston, MA | RLB Quarterly Construction Cost Report, North America, Q1 2026 | |
| Multi-family, hard construction cost | 220–490 | $/sf | Q1 2026 | Chicago, IL | RLB Quarterly Construction Cost Report, North America, Q1 2026 | |
| Multi-family, hard construction cost | 270–440 | $/sf | Q1 2026 | Los Angeles, CA | RLB Quarterly Construction Cost Report, North America, Q1 2026 | |
| Multi-family, hard construction cost | 255–500 | $/sf | Q1 2026 | New York, NY | RLB Quarterly Construction Cost Report, North America, Q1 2026 | |
| Multi-family, hard construction cost | 220–370 | $/sf | Q1 2026 | Washington, DC | RLB Quarterly Construction Cost Report, North America, Q1 2026 | |
| Median custom (contractor-built) home price | 166 | $/sf | 2024 data (published Oct 2025) | US national | NAHB Eye on Housing, Square Foot Prices Moderate in 2024 | |
| Median spec (for-sale) home price, excluding lot | 153 | $/sf | 2024 data (published Oct 2025) | US national | NAHB Eye on Housing, Square Foot Prices Moderate in 2024 | |
| Median spec home price, Pacific division | 223 | $/sf | 2024 data (published Oct 2025) | Pacific division | NAHB Eye on Housing, Square Foot Prices Moderate in 2024 | |
| Median spec home price, South Atlantic division | 147 | $/sf | 2024 data (published Oct 2025) | South Atlantic division | NAHB Eye on Housing, Square Foot Prices Moderate in 2024 | |
| Median spec home price, South Central division | 144 | $/sf | 2024 data (published Oct 2025) | South Central division | NAHB Eye on Housing, Square Foot Prices Moderate in 2024 | |
| Median custom home price, Pacific division | 167 | $/sf | 2024 data (published Oct 2025) | Pacific division | NAHB Eye on Housing, Square Foot Prices Moderate in 2024 | |
| Median custom home price, South Atlantic division | 155 | $/sf | 2024 data (published Oct 2025) | South Atlantic division | NAHB Eye on Housing, Square Foot Prices Moderate in 2024 | |
| Median sales price, new single-family home sold | 417,400 | $ | 2025 | US national | US Census Bureau, Characteristics of New Housing, Highlights | |
| Median size, new single-family home sold | 2,194 | sf | 2025 | US national | US Census Bureau, Characteristics of New Housing, Highlights | |
| Median contract price, new single-family home built for sale | 404,000 | $ | 2025 | US national | US Census Bureau, Characteristics of New Housing, Highlights |
Figures are as published on the linked page; check edition, scope and what the rate includes before using one.
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How to use this calculator
The formula
Worked example
When this estimate will be off
- Census rows give a median sale price (417,400) and median size (2,194 sf) for a new home, not a $/sf construction rate — divide price by size before entering it as a rate (src/config/calculator-benchmarks.ts:222-224).
- NAHB median prices are sale prices, not hard construction cost — they carry land, profit, and market conditions this worksheet does not separate out (src/config/calculator-benchmarks.ts:215-221).
- Benchmark rows on this page are sourced reference points, not market data for your project; no currency conversion is supplied.
- No cost-plan, procurement, escalation, tax, finance, schedule, risk, or professional adequacy determination is made.
Frequently asked questions
A common mistake: Census rows give a median sale price (417,400) and median size (2,194 sf) for a new home, not a $/sf construction rate — divide price by size before entering it as a rate (src/config/calculator-benchmarks.ts:222-224).
No. It applies transparent arithmetic to a user-supplied benchmark and allowances — it does not predict bids, escalation, or final cost.
Use a dated source for the same market, currency, measurement basis, scope, and project type as the residential construction project you're estimating. The benchmark table above lists sourced reference points, not market data for your project.
So nothing already included in the base rate is counted twice. Enter only allowances not already reflected in the benchmark rate itself.
No. The result is base amount × (1 + fees% + contingency% + other allowance%) only. Escalation, taxes, finance, procurement risk, and professional adequacy are not determined by this worksheet.
Sources
- User-identified cost source — must provide the rate, market, date, currency, measurement basis, scope, inclusions and exclusions
This free Residential Construction Cost Calculator is built and maintained by DataDrivenAEC, using the relevant codes and standards. It does not substitute for professional judgment.