Accessory Dwelling Unit (ADU) Construction in Upper Darby, PA — Costs $68,960 to $402,267
What does accessory dwelling unit (adu) construction cost in Upper Darby? Average $172,400, ranging $68,960–$402,267. Labor runs $40.46/hr locally — 15% above the national average. Free breakdown with material + labor split.
Upper Darby, PA Market
+15% vs nationalLabor Rate
$40.46/hr
Material Index
95
Avg Permit Cost
$1,401
Median Home Price
$262,000
In a smaller market like Upper Darby, Pennsylvania, the pool of contractors specializing in accessory dwelling unit (adu) construction may be more limited. Getting 3+ quotes is especially important to ensure fair pricing. Costs in Upper Darby run slightly above the national average, though the gap is modest enough that smart material choices and timing can close it. The median home in Upper Darby is valued at $262,000, putting this project at about 65.8% of home value — a moderate investment with a projected 80% ROI.
Low Estimate
$68,960
National: $60,000
Mid-Range
$172,400
National: $150,000
High End
$402,267
National: $350,000
Per Sq Ft
$287
National: $250
Accessory Dwelling Unit (ADU) Construction Cost Calculator for Upper Darby
Adjusted for Upper Darby's labor rate ($40.46/hr) and material costs (index 95).
Mid-grade materials, good quality fixtures, standard options.
Estimated Total in Upper Darby
$172,400
Based on 200 sq ft at mid quality, adjusted for Upper Darby market rates.
Local Cost Breakdown
At Upper Darby's average rate of $40.46/hr (35% above national avg)
Material cost index 95 (5% below national baseline of 100)
Accessory Dwelling Unit (ADU) Construction vs. Home Value in Upper Darby
| Metric | Upper Darby | National Avg |
|---|---|---|
| Accessory Dwelling Unit (ADU) Construction (Mid-Range) | $172,400 | $150,000 |
| Median Home Price | $262,000 | $350,000 |
| Project as % of Home Value | 65.8% | 42.9% |
| Estimated ROI | 80% | 80% |
| Median Household Income | $64,900 | $75,000 |
What Affects the Price in Upper Darby
- 1Local labor rates ($40.46/hr in Upper Darby)
- 2Material cost index (95 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 Upper Darby, PA
Second Story Addition
$229,867
Room Addition
$103,440
Swimming Pool Installation
$72,115
Garage Addition
$63,213
Home Addition
$90,352
Inground Swimming Pool
$70,820
Attic Conversion
$64,310
Swimming Pool Construction
$58,463
Accessory Dwelling Unit (ADU) Construction in Other Pennsylvania Cities
Planning a Accessory Dwelling Unit (ADU) Construction in Upper Darby
Building permits are typically required for a accessory dwelling unit (adu) construction in Upper Darby. The average permit fee in this area is $1,401, 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 Upper Darby, skilled contractors charge an average of $40.46/hr, and the specialized nature of this work means cutting corners on labor can lead to costly rework.
For the median Upper Darby household earning $64,900/year, this project at $172,400 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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