Foundation Repair in Suffolk County, Long Island — APM O'Neill & Sons
Suffolk County · Long Island

Foundation work
that keeps water out.

Foundation parging, crack repair, waterproof coatings, and drainage tie-ins for block and poured foundations.

Lic # 58161-H·Fully Insured·Est. 1994·30+ Years
30+
Years serving Long Island
500+
Projects completed
5.0
Google review rating
Lic # 58161-H
NY License · Fully insured
What's built in

Details that separate
good work from great.

Four disciplines · One crew
01

Crack repair

Hydraulic cement, epoxy injection, or urethane depending on crack type and load.

Included in every build
02

Parging

Full parge coat over block or poured foundations with fiber-reinforced mix.

Included in every build
03

Waterproof membrane

Rubberized asphalt or elastomeric membrane on excavated exterior.

Included in every build
04

Drainage tie-in

Footing drain / dry-well tie-in where downspouts and grade allow.

Included in every build
The build · Five stages

Five steps. One crew.

A cohesive process engineered for durability and professional delivery.

  1. 01
    The Discovery

    Free estimate

    On-site measure, scope, and written proposal — no pressure, no upsell.

  2. 02
    The Blueprint

    Design & materials

    Layout, samples, and finishes confirmed before we mobilize.

  3. 03
    The Logistics

    Build

    Our own licensed crews — no subs — on-site daily until it's done right.

  4. 04
    The Build

    Walk-through

    Punch list closed, site cleaned, and written workmanship warranty issued.

Est. 1994 · Lic # 58161-H
What clients say · Verified Google reviews

Straight from
our neighbors.

5.0/ 5.0 average

Based on 6+ verified reviews from homeowners across Suffolk County. Every project is warrantied in writing and completed by our own crew — no subs.

Read all reviews on Google

Ready to get started? Free on-site estimates across Suffolk County.

(631) 480-3238
Frequently Asked

Answers before
you call.

01

Is my foundation crack serious?

Vertical hairline cracks are usually cosmetic. Horizontal, stepped, or widening cracks need a professional look — we'll tell you honestly.

02

Do you excavate?

Yes, when interior fixes won't stop water intrusion.

APM O'Neill & Sons

Your Dream Outdoor Living Space With Low Monthly Payments

Flexible Monthly Payments Available

Licensed & Insured · Free Estimates · Serving Suffolk County, NY

(631) 480-3238
Outdoor living space with patio built by APM O'Neill & Sons
Call Today:(631) 480-3238