Prendergast Construction Company
Here’s what we’ve checked on Prendergast Construction Company so far.
- Years in business
- 47
- BBB
- Accredited · A+
- Last checked
- June 2026
Home Addition in Jonesborough sees strong homeowner demand across the Kingsport Metro.
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FreeTypical Range
$40,000 to $150,000
Typical Home Addition projects in Jonesborough run $40,000 to $150,000.
Mid-range cost and resale value from the 2025 Remodeling Cost vs. Value report. Jonesborough is benchmarked using the East South Central regional average.
| Project | Cost | Resale Value | ROI |
|---|---|---|---|
| Accessory Dwelling Unit | $145,541 | $70,534 | 49% |
| Primary Suite Addition | Midrange | $150,285 | $54,161 | 36% |
| Primary Suite Addition | Upscale | $308,579 | $67,081 | 22% |
Source: Remodeling Magazine 2025 Cost vs. Value. Mid-range tier.
Jonesborough Market
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Here’s what we’ve checked on Prendergast Construction Company so far.
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Bump-outs cost $5,000–$30,000 and expand a room 2–15 feet without new foundation work. Full additions cost $30,000–$100,000+ and require foundation, framing, and roof extension. Here's how to know which your project actually needs.