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ContractorsRanked

Best General Contractors in Central Islip, NY (2026)

939 general contractors ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →

The short answer

  1. 1

    Best overall in Central Islip: Dynoflip Construction, CR Score 64/100; 5.0★ from 160 Google reviews; open 7 days a week.

  2. 2

    Best for emergencies (open 24/7): Power Group Construction Inc, posts 24/7 hours; ranked #2 of 939.

  3. 3

    Most-reviewed: Gappsi, Inc., 500 Google reviews at 4.8★, the most of 939 ranked; ranked #3.

Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank

939 Central Islip general contractors are ranked here by CR Score, from ten published factors. 109 are open 24/7, 505 open Saturdays and 216 open Sundays, based on posted hours. The median Google rating is 5.0★ across 939 rated businesses.

Top 10 general contractors in Central Islip at a glance

Top 10 general contractors in Central Islip at a glance
RankBusinessCR ScoreGoogle ratingBased inHoursBest for
1Dynoflip Construction645.0★ (160)Hauppauge, 3 mi awaySat · SunOverall
2Power Group Construction Inc635.0★ (80)Deer Park, 7 mi away24/7Emergencies
3Gappsi, Inc.634.8★ (500)Smithtown, 5 mi awaySatMost reviews
4Kentstruction625.0★ (69)Medford, 10 mi away24/7—
5Lee Home Improvement625.0★ (170)South Farmingdale, 13 mi away24/7—
6Diamond Ridge Builders & Restoration614.9★ (49)Deer Park, 8 mi away24/7—
7Softwind Powerwashing & Paver Sealing615.0★ (52)East Islip, 4 mi awaySat · Sun—
8RC Contracting615.0★ (65)Huntington, 12 mi away24/7—
9Carlos Diaz Construction615.0★ (70)Central IslipSat—
10Asphalt D general contracting614.9★ (43)Bayport, 8 mi away24/7—

The 939 best general contractors in Central Islip, ranked

Ordered by CR Score, a 0–100 score from ten published factors. Paid placement never changes the order.

Scores below: based on 8 of 10 factors; credentials and recency not yet collected. Hatched segments mark factors we don't have yet.

  1. Ranked #1 in Central Islip

    #1 Dynoflip Construction

    Based in Hauppauge, 3 mi away

    64/100CR Score

    Ranked #1 because of its Google rating and trade focus: 5.0★ from 160 Google reviews, listed on Google as “Construction company”.

    • 5.0★ from 160 Google reviews
    Hours
    Mon–Sat 6 AM–6 PM · Sun 6 AM–6:30 PM
    Address
    619 Townline Rd, Hauppauge, NY 11788
    View profile for Dynoflip Construction(631) 672-5441

  3. #3 Gappsi, Inc.

    Based in Smithtown, 5 mi away

    63/100CR Score

    Ranked #3 because of its Google rating and review volume: 4.8★ from 500 Google reviews, the most in Central Islip.

    • 4.8★ from 500 Google reviews
    Hours
    Mon–Sat 9 AM–4 PM · Sun closed
    Address
    1015 W Jericho Turnpike, Smithtown, NY 11787
    View profile for Gappsi, Inc.(631) 543-1177

  4. #4 Kentstruction

    Based in Medford, 10 mi away

    62/100CR Score

    Ranked #4 because of its Google rating and trade focus: 5.0★ from 69 Google reviews, listed on Google as “Construction company”.

    • 5.0★ from 69 Google reviews
    • Open 24/7
    Hours
    Open 24 hours, 7 days
    Address
    18 Robinson Ave, Medford, NY 11763
    View profile for Kentstruction(631) 654-0233

  5. #5 Lee Home Improvement

    Based in South Farmingdale, 13 mi away

    62/100CR Score

    Ranked #5 because of its Google rating and trade focus: 5.0★ from 170 Google reviews, listed on Google as “General contractor”.

    • 5.0★ from 170 Google reviews
    • Open 24/7
    Hours
    Open 24 hours, 7 days
    Address
    34 Paula Dr, South Farmingdale, NY 11735
    View profile for Lee Home Improvement(516) 984-9862

  8. #8 RC Contracting

    Based in Huntington, 12 mi away

    61/100CR Score

    Ranked #8 because of its Google rating and trade focus: 5.0★ from 65 Google reviews, listed on Google as “General contractor”.

    • 5.0★ from 65 Google reviews
    • Open 24/7
    Hours
    Open 24 hours, 7 days
    Address
    183 Railroad St, Huntington, NY 11743
    View profile for RC Contracting(516) 522-9302

  19. #19 MPD Carpentry

    Based in Bayport, 9 mi away

    60/100CR Score

    Ranked #19 because of its Google rating and trade focus: 5.0★ from 39 Google reviews, listed on Google as “Contractor”.

    • 5.0★ from 39 Google reviews
    • Open 24/7
    Hours
    Open 24 hours, 7 days
    Address
    302 Imperial Way, Bayport, NY 11705
    View profile for MPD Carpentry(631) 356-5523

  20. #20 Diverse Repairs Inc

    Based in Glen Cove, 22 mi away

    59/100CR Score

    Ranked #20 because of its Google rating and trade focus: 5.0★ from 83 Google reviews, listed on Google as “General contractor”.

    • 5.0★ from 83 Google reviews
    • Open 24/7
    Hours
    Open 24 hours, 7 days
    Address
    6 Avenue B, Locust Valley, NY 11560
    View profile for Diverse Repairs Inc(516) 669-5302

  21. #21 TNS Storks

    Based in Elwood, 4 mi away

    59/100CR Score

    Ranked #21 because of its Google rating and trade focus: 5.0★ from 19 Google reviews, listed on Google as “General contractor”.

    • 5.0★ from 19 Google reviews
    Hours
    Mon–Sat 9 AM–5 PM · Sun 9 AM–11 PM
    View profile for TNS Storks(631) 683-8862

  24. #24 DJT Development

    Based in Holtsville, 8 mi away

    59/100CR Score

    Ranked #24 because of its Google rating and trade focus: 4.5★ from 17 Google reviews, listed on Google as “Construction company”.

    • 4.5★ from 17 Google reviews
    • Open 24/7
    Hours
    Open 24 hours, 7 days
    Address
    194 Morris Ave Suite 50, Holtsville, NY 11742
    View profile for DJT Development(631) 627-3673

General contractors ranked #26 to #50

#1 to #25 are shown in full above. Here are #26 to #50, in CR Score order; each links to its profile. We publish the top 50 of 939 ranked general contractors here; the rest are on their profiles.

general contractors in Central Islip, ranks 26 to 50
RankBusinessCR ScoreGoogle ratingDistance
26Strong Island Land Services595.0★ (8)6 mi
27Wickman Construction594.4★ (25)10 mi
28CityWide Home Improvements585.0★ (44)20 mi
29Eagle Remodeling GC Inc584.5★ (8)4 mi
30Bob Goess Contracting585.0★ (55)12 mi
31Garden City Renovations - General Contractor585.0★ (55)22 mi
32JZE Home Improvement585.0★ (3)In Central Islip
33Belli Contracting Co584.7★ (149)4 mi
34Top Pro's Construction585.0★ (19)14 mi
35Long Island Building and Contracting Consultants585.0★ (11)10 mi
36Al-Arsh construction584.3★ (6)4 mi
37AP PROBUILD CORP585.0★ (11)10 mi
38Syosset Lock Shop584.3★ (64)16 mi
39JLS Building Corp585.0★ (14)13 mi
40J & J Premier Contractors584.6★ (28)5 mi
41VA Management Group Inc.585.0★ (20)6 mi
42Lionsgate Petrocelli Builders LLC585.0★ (23)18 mi
43T. Michaels Contracting Inc.584.9★ (39)11 mi
44Royalty Construction584.3★ (6)6 mi
45Caldara & Sons Contracting, Inc.574.0★ (8)7 mi
46SMG SOLUTIONS GROUP INC.575.0★ (7)11 mi
47Dynamic Exteriors LLC574.6★ (22)17 mi
48Mitigation Solution LLC574.9★ (10)13 mi
49VC Legacy Contracting Corp574.8★ (12)14 mi
50Flooded Basement Cleanup Companies Long Island575.0★ (27)23 mi

Also serving Central Islip

20 more general contractors within 25 mi that we can't rank yet: too few reviews, or a trade we couldn't confirm. Listed A to Z.

Unranked general contractors serving Central Islip
BusinessGoogle ratingDistance
503 DRYWALL CORPIn Central Islip
AAK Paving & Masonry4.3★ (6)In Central Islip
All County Home ImprovementIn Central Islip
Corea Brick Stone & construction corp.5.0★ (2)In Central Islip
Country Setting LandscapesIn Central Islip
F&F Prudencio Construction Inc.In Central Islip
F3 Construction Corp5.0★ (34)In Central Islip
Hendriks Contracting Corp5.0★ (2)In Central Islip
Hercules Brothers Construction3.7★ (15)In Central Islip
Home Heating and Plumbing Supplies1.0★ (1)In Central Islip
Jc tiles of Long Island4.9★ (8)In Central Islip
JD Complete Landscaping and Hardscape Design ContractorIn Central Islip
Maxxum Construction CorporationIn Central Islip
MJE Professional Painting Corp5.0★ (41)In Central Islip
NG professional home improvement inc5.0★ (1)In Central Islip
NJV Construction, Inc5.0★ (1)In Central Islip
OY Contreras Construction Inc.In Central Islip
TLA Contracting IncIn Central Islip
TradeSource, Inc3.0★ (1)In Central Islip
Valsen Construction Corp.5.0★ (1)In Central Islip

How much do general contractors cost in Central Islip?

Typical prices in USD, adjusted for New York with a published regional index. Each row names its basis and month.

How much do general contractors cost in Central Islip?
JobLowTypicalHighBasisChecked
Kitchen remodel$16,000$29,600$45,640Per 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)October 2026
Bathroom remodel$7,670$14,020$20,380Per bathroom: typical range of customer-reported remodels. US national range × 1.15 Middle Atlantic factor (2025 Cost vs. Value Report)October 2026

How we ranked Central Islip general contractors

We scored 939 Central Islip general contractors on ten factors, weighted as shown. A business is ranked when its trade is confirmed and it has 3 or more Google reviews or a claimed profile. A business with no Google reviews scores zero on rating, review volume and recency. Other unknown factors are left out, not counted as zero. Scores last refreshed October 22, 2026.

Paid placement never changes a rank or score. Featured businesses are paid, labelled, limited to 3 and shown above the ranking, outside it.

Read the full method: formula, sources and exclusions

CR Score factors and weights
FactorWeightComputed fromIn Central Islip data
Reputation25%Google star rating, adjusted for how many reviews back itMeasured
Credentials15%Active state license, bond and workers’ comp on fileNot yet collected
Review volume10%Number of Google reviews, compared with the most-reviewed business on the listMeasured
Recency5%Share of reviews from the last 12 monthsNot yet collected
Availability5%Weekly open hours, Saturday, Sunday, 24/7 or same-dayMeasured
Trade focus10%How clearly the business does this trade (its Google category and name)Measured
Proximity5%Based in the city scores highest, less the farther away it isMeasured
Claimed profile10%The business has claimed its ContractorsRanked profile (free or paid earn the same)Measured
Partnered5%The business links to ContractorsRanked from its own website with our badge, checked periodicallyMeasured
ContractorsRanked reviews10%Verified customer reviews collected by ContractorsRanked: their rating and how many there areMeasured

General contractors in Central Islip: frequently asked questions

Who is the best general contractor in Central Islip?

By CR Score, the highest-ranked general contractor in Central Islip, NY is Dynoflip Construction with a CR Score of 64/100. It has 5.0★ from 160 Google reviews. It is open 7 days a week. Power Group Construction Inc (#2) and Gappsi, Inc. (#3) follow. We ranked 939 general contractors on ten factors, last updated October 22, 2026.

How many general contractors are there in Central Islip?

ContractorsRanked ranks 939 general contractors serving Central Islip, NY. 2 of them are based in Central Islip; the rest serve it from nearby towns. Another 20 within 25 mi are listed but not ranked yet. Counts are as of October 2026.

Which general contractors in Central Islip are open 24/7?

109 ranked general contractors in Central Islip post 24/7 hours. The highest-ranked are Power Group Construction Inc (#2), Kentstruction (#4) and Lee Home Improvement (#5). Hours come from each business's Google listing as of October 2026, so call to confirm.

Which general contractors in Central Islip work on weekends?

505 of 939 ranked general contractors post Saturday hours and 216 post Sunday hours. The highest-ranked open Saturdays are Dynoflip Construction (#1), Power Group Construction Inc (#2) and Gappsi, Inc. (#3). Posted hours are office hours; crews may book weekend jobs separately.

How much does kitchen remodel cost in Central Islip?

Kitchen remodel typically costs $16,000 to $45,640, with $29,600 typical (Per 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)). The range is adjusted for New York. Prices were last checked October 2026. Get at least two written quotes before you hire.

What Google rating do Central Islip general contractors have?

The median Google rating among 939 rated general contractors in Central Islip is 5.0★, with a median of 8 reviews. Gappsi, Inc. has the most, 500 reviews, and ranks #3. We adjust ratings for review count, so a few five-star reviews cannot top the list.

How does ContractorsRanked rank general contractors?

Each general contractor gets a 0–100 CR Score from ten published factors, led by reputation (25%), credentials (15%), review volume (10%) and trade focus (10%). A business with no Google reviews scores zero on rating, review volume and recency; other factors we cannot measure are left out. Only businesses with a confirmed trade and 3 or more reviews, or a claimed profile, are ranked.

Do general contractors outside Central Islip count in this ranking?

Yes, if they are within 25 mi of the Central Islip city center, our service radius for general contractors. Each listing shows where the business is based and how far away it is. Proximity is 5% of the CR Score, so a nearby business gets a small edge.

Update log for Central Islip

  1. October 2026: CR Scores recalculated for 939 general contractors serving Central Islip.
  2. October 2026: 13 duplicate listings merged.

More general contractors and Central Islip pages

Other trades in Central Islip