Core OneGeneral contractor in Ronkonkoma, NY

Core One is a general contractor at 856 Johnson Ave Unit 6, Ronkonkoma, NY 11779. Open Monday to Friday.

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Key facts

Key facts about Core One
Address	856 Johnson Ave Unit 6, Ronkonkoma, NY 11779Get directions
Phone	(855) 937-6922
Website	coreoneny.com
Hours	Monday to Friday: 7 AM – 3:30 PM

Trades

Each trade shows the evidence we matched it on.

General Contractingmain tradeGoogle main category

Service area

Serves Ronkonkoma and 11 towns within 25 miles: Lake Ronkonkoma, Holbrook, Bohemia, Lake Grove, Nesconset, Centereach, Central Islip, Hauppauge, Holtsville, Smithtown and Saint James.

Based in Ronkonkoma, NYView on map

Opening hours

Opening hours for Core One
Day	Hours
Monday	7 AM – 3:30 PM
Tuesday	7 AM – 3:30 PM
Wednesday	7 AM – 3:30 PM
Thursday	7 AM – 3:30 PM
Friday	7 AM – 3:30 PM
Saturday	Closed
Sunday	Closed

Open evenings — no
Open Saturdays — no
Open Sundays — no

Typical general contracting prices

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 × 1.10 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.

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Questions about Core One

What are Core One’s hours?

Core One is open Monday to Friday. Its listed hours are Monday to Friday, 7 AM – 3:30 PM. It is closed on Saturdays and closed on Sundays. Hours come from the business listing; holiday hours may differ.

What areas does Core One serve?

Serves Ronkonkoma and 11 towns within 25 miles: Lake Ronkonkoma, Holbrook, Bohemia, Lake Grove, Nesconset, Centereach, Central Islip, Hauppauge, Holtsville, Smithtown and Saint James. 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 Core One?

Call Core One on (855) 937-6922. The business is at 856 Johnson Ave Unit 6, Ronkonkoma, NY 11779. Its website is linked in the key facts on this page. Ask for a written estimate before any work starts.

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