Accessory Dwelling Unit (ADU) Construction in Cary, NC — Costs $51,460 to $300,183
What does accessory dwelling unit (adu) construction cost in Cary? Average $128,650, ranging $51,460–$300,183. Labor runs $25.06/hr locally — 14% below the national average. Free breakdown with material + labor split.
Cary, NC Market
-14% vs nationalLabor Rate
$25.06/hr
Material Index
88
Avg Permit Cost
$724
Median Home Price
$244,467
Cary is a mid-sized city in North Carolina with a healthy pool of local contractors. Homeowners generally have several options to compare for a accessory dwelling unit (adu) construction, which helps keep pricing competitive. Cary offers slightly below-average renovation costs, giving homeowners a small cost advantage compared to most US markets. At a median home price of $244,467, homeowners in Cary should weigh the project cost (52.6% of home value) carefully against expected returns to avoid over-improving for the local market.
Low Estimate
$51,460
National: $60,000
Mid-Range
$128,650
National: $150,000
High End
$300,183
National: $350,000
Per Sq Ft
$214
National: $250
Accessory Dwelling Unit (ADU) Construction Cost Calculator for Cary
Adjusted for Cary's labor rate ($25.06/hr) and material costs (index 88).
Mid-grade materials, good quality fixtures, standard options.
Estimated Total in Cary
$128,650
Based on 200 sq ft at mid quality, adjusted for Cary market rates.
Local Cost Breakdown
At Cary's average rate of $25.06/hr (16% below national avg)
Material cost index 88 (12% below national baseline of 100)
Accessory Dwelling Unit (ADU) Construction vs. Home Value in Cary
| Metric | Cary | National Avg |
|---|---|---|
| Accessory Dwelling Unit (ADU) Construction (Mid-Range) | $128,650 | $150,000 |
| Median Home Price | $244,467 | $350,000 |
| Project as % of Home Value | 52.6% | 42.9% |
| Estimated ROI | 80% | 80% |
| Median Household Income | $50,933 | $75,000 |
What Affects the Price in Cary
- 1Local labor rates ($25.06/hr in Cary)
- 2Material cost index (88 vs national 100)
- 3Attached vs detached
- 4Size and bedroom count
- 5Kitchen and bath quality
- 6Local ADU regulations
Popular Upgrades
- Full kitchen
- Separate entrance
- Solar panels for energy independence
Other Projects in Cary, NC
Second Story Addition
$171,533
Room Addition
$77,190
Swimming Pool Installation
$56,039
Garage Addition
$47,172
Home Addition
$68,792
Inground Swimming Pool
$56,184
Attic Conversion
$47,049
Swimming Pool Construction
$42,772
Accessory Dwelling Unit (ADU) Construction in Other North Carolina Cities
Planning a Accessory Dwelling Unit (ADU) Construction in Cary
Building permits are typically required for a accessory dwelling unit (adu) construction in Cary. The average permit fee in this area is $724, though costs vary based on project scope. Permit fees in this market are above average — factor them into your total budget. Plan for 6-18 months from start to finish.
A accessory dwelling unit (adu) construction is a complex project best left to licensed professionals. In Cary, skilled contractors charge an average of $25.06/hr, and the specialized nature of this work means cutting corners on labor can lead to costly rework.
For the median Cary household earning $50,933/year, this project at $128,650 represents a significant investment. Consider financing options or phasing the work to spread costs over time.
Accessory Dwelling Unit (ADU) Construction — National Guide
See the full national cost guide with DIY tips, cost factors, and ROI analysis.
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