Corner Keystone Construction CorporationGeneral contractor in Walnut, CA
Corner Keystone Construction Corporation is a general contractor at 340 S Lemon Ave, Walnut, CA 91789.
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Key facts
| Address | 340 S Lemon Ave, Walnut, CA 91789Get directions |
|---|---|
| Phone | (844) 252-2677 |
| Website | cornerkeystone.com |
Trades
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- General Contractingmain tradeGoogle main category
Service area
Serves Walnut and 11 towns within 25 miles: South San Jose Hills, Diamond Bar, Rowland Heights, La Puente, Valinda, Covina, Chino Hills, West Covina, La Habra Heights, Charter Oak and Hacienda Heights.
Typical general contracting prices
| Job | Low | Typical | High |
|---|---|---|---|
| Kitchen remodelPer project: typical range of customer-reported remodels (about $75 to $250 per sq ft). US national range × 1.04 Pacific factor (2025 Cost vs. Value Report) | $15,240 | $28,190 | $43,470 |
| Bathroom remodelPer bathroom: typical range of customer-reported remodels. US national range × 1.06 Pacific factor (2025 Cost vs. Value Report) | $7,050 | $12,880 | $18,720 |
Market ranges for the trade, checked October 2026, not a quote from this business. Ask for a written estimate.
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