Skip to content
ContractorsRanked

D.S. Cornerstone Builders Corp.General contractor in Riverhead, NY

D.S. Cornerstone Builders Corp. is a general contractor at 400 Ostrander Ave, Riverhead, NY 11901. Open Monday to Friday.

Riverhead, NY0 paid placements in any rankingHow we rank

Call (631) 779-2832Website ↗

Key facts

Key facts about D.S. Cornerstone Builders Corp.
Address400 Ostrander Ave, Riverhead, NY 11901Get directions
Phone(631) 779-2832
Websitestromskiarchitecture.com
HoursMonday to Friday: 7:30 AM – 5 PM

Trades

Each trade shows the evidence we matched it on.

  • General Contractingmain tradeGoogle main category

Service area

Serves Riverhead and 11 towns within 25 miles: Calverton, Hampton Bays, Manorville, East Moriches, Wading River, Center Moriches, East Shoreham, Ridge, Mastic, Shirley and Rocky Point.

Based in Riverhead, NYView on map

Opening hours

Opening hours for D.S. Cornerstone Builders Corp.
DayHours
Monday7:30 AM – 5 PM
Tuesday7:30 AM – 5 PM
Wednesday7:30 AM – 5 PM
Thursday7:30 AM – 5 PM
Friday7:30 AM – 5 PM
SaturdayClosed
SundayClosed
  • Open evenings — no
  • Open Saturdays — no
  • Open Sundays — no

Typical general contracting prices

Typical general contracting prices
JobLowTypicalHigh
Kitchen remodelPer project: typical range of customer-reported remodels (about $75 to $250 per sq ft). US national range × 1.10 Middle Atlantic factor (2025 Cost vs. Value Report)$16,000$29,600$45,640
Bathroom remodelPer bathroom: typical range of customer-reported remodels. US national range × 1.15 Middle Atlantic factor (2025 Cost vs. Value Report)$7,670$14,020$20,380

Market ranges for the trade, checked October 2026, not a quote from this business. Ask for a written estimate.

Reviews

ContractorsRanked reviews

No ContractorsRanked reviews yet

Google

No Google rating on file

Hired D.S. Cornerstone Builders Corp.? Write a review

Questions about D.S. Cornerstone Builders Corp.

What are D.S. Cornerstone Builders Corp.’s hours?

D.S. Cornerstone Builders Corp. is open Monday to Friday. Its listed hours are Monday to Friday, 7:30 AM – 5 PM. It is closed on Saturdays and closed on Sundays. Hours come from the business listing; holiday hours may differ.

What areas does D.S. Cornerstone Builders Corp. serve?

Serves Riverhead and 11 towns within 25 miles: Calverton, Hampton Bays, Manorville, East Moriches, Wading River, Center Moriches, East Shoreham, Ridge, Mastic, Shirley and Rocky Point. The list is based on the business's location and the usual service radius for general contracting. Confirm your address is covered when you call.

How do I contact D.S. Cornerstone Builders Corp.?

Call D.S. Cornerstone Builders Corp. on (631) 779-2832. The business is at 400 Ostrander Ave, Riverhead, NY 11901. Its website is linked in the key facts on this page. Ask for a written estimate before any work starts.

Own D.S. Cornerstone Builders Corp.? Claim this profile.

Claiming is free. Correct your hours, trades and service area. The CR Score is recalculated from corrected data; payment never changes it.

Claim this profile