South Shore DEMPSEY'S PLUMBING (555) 240-1188
The family that runs it

Twenty-Six Years of South Shore Plumbing, Still Run by the Same Family in Lindenhurst

Walt and Carol put the first van on the road in 1999. Their son plans the week now, Walt is still out on the tools, and there is nobody in the office who is not related to somebody in a van.

Plumbers standing in a row in front of two white service vans on the shop yard
  • 26yrs

    On the South Shore since 1999

  • 11,200+

    Houses we have worked inside

  • 4.8

    Across 512 verified reviews

  • 75min

    Typical emergency arrival

Plumber working at a curbside water service line beside a parked van
A service line job, the kind of work the shop was built on.
Where it began

It Began With a Second-Hand Van and a Short List of Rules.

Walt learned the trade in an Amityville shop at the back end of the eighties. The morning he decided to go it alone, he had just watched a homeowner sign for a full line renewal when the fault, plainly, was one cracked joint eight feet from the house.

So the shop opened in 1999 on three rules that have not moved since: name the real fault, price the smallest repair that ends it, and treat a free inspection as information rather than a sales lead.

Brian came over from the construction side in 2009 and took the diary, the estimates and the permit work. Hector arrived in 2012 and carries the night calls. Carol has never handed the phone to a machine, which is why your call is answered by somebody who knows where the vans are.

What we hold to

Pipework Is Straightforward. Being Believed Is the Hard Part.

Almost every fault has a fix. What keeps people awake is simpler than that: is the stranger in my cellar levelling with me, and will the bill at the end resemble the number at the beginning.

Which is why the diagnosis comes first and the figure goes in writing on the doorstep. Open a wall, find something worse, and the tools go down while we re-price it in front of you rather than tucking it onto the invoice.

Each visit closes with a free look over the valves, the pressure, the heater and the visible pipework. You are told what turned up even on the days when there is nothing in it for the shop.

Plumber measuring a rough-in line in an open stud wall during a bathroom renovation
A rough-in measured twice before anything is glued.
Who turns up

The Same Four Faces, on Every Single Visit.

A small crew on purpose. You get a text with the name and the face of whoever is driving to you.

Portrait of the founder, a silver-haired plumber, in the shop store room

Walt Dempsey

Founder, master plumber

On the tools since 1994

Walt served his time in an Amityville shop, spent a decade on somebody else's payroll, then bought a van and a phone line. He is still out on calls most of the week and has met more bad pipe than anybody on this shore.

Portrait of the scheduling manager in the shop store room

Brian Dempsey

Scheduling & estimates

On the tools since 2009

Walt's son, and the reason the van shows up when we said it would. Brian prices the renovation work, plans the week and deals with anything the town wants on paper first.

Portrait of the senior service technician with folded arms in the shop store room

Hector Alvarez

Senior service tech

On the tools since 2012

Hector covers most of the out-of-hours work and turns up leaks that have already beaten two other outfits. He would rather walk you to the fault with a torch than describe it in the driveway.

Portrait of the office manager in the shop store room

Carol Dempsey

Runs the office

Answering the phone since 1999

First ring, every time, and she is the one who ranks the day. Nine calls out of ten she knows from your opening sentence whether a van goes out tonight or Thursday morning.

How it goes

What Actually Happens After You Call the Shop.

The part homeowners dread is not the plumbing itself, it is not knowing what the job will cost or who is going to turn up. So here is the whole sequence, in order.

  1. Somebody Here Picks Up The Phone

    Carol or Brian answers. Tell us what you are seeing, hearing or smelling and you get a straight view on whether a van goes out today.

  2. We Work Out What Has Actually Failed

    A camera, a gauge, a torch, whatever the job needs. Nothing gets priced until we can say out loud what has failed and why it failed.

  3. You Approve One Fixed Number

    One figure, handed over at the door before a tool leaves the van. Find something hidden in a wall and we halt, show you, and re-quote there.

  4. The Job Gets Done And Tidied

    Dust sheets first, and whatever we take out goes away in the van. Permit jobs are filed by us, and one of us stands with the inspector.

  5. The Rest Gets Checked For Free

    Valves, pressure, the heater, any pipework we can see. You get told exactly what we found, and none of it turns into a sales call later.

What you get

Every Visit Ends With a Free Look at the Rest.

Before the van pulls away somebody goes round the valves, checks the pressure, looks over the heater and whatever pipework is on show, then tells you what they saw. Good news or bad, with nothing attached.

  • Is anything unsafe?Valves, gas bonding, pressure and anything on the way out. A hazard gets said out loud the same day.
  • What will it cost later?A weeping stop tap, a swollen flexible, a cylinder packed with scale. Cheap this year, ugly the next, and you should know now.
  • Written down, not pitchedThe findings come to you in writing with no quote attached and nobody ringing back to chase the work.
See the process
Plumber checking the fittings above a tank water heater in a basement
Down the road from you

We Are From Here.

Our children sat in the same classrooms as yours and we queue behind our customers at the deli counter on Saturdays. It is a useful constraint on a trade business: corners are much harder to cut when you will be standing behind the owner at the ball field on Sunday.

The shop backs a little league side, keeps the food pantry plumbing running at no charge, and spends a fortnight each October shutting down outside taps for older neighbours who ring and ask.

Plumbers loading a service van in a driveway at the end of the day
Last call of the day, somewhere off Montauk Highway.

Five Hundred South Shore Homeowners Later.

4.8 average from 512 reviews
“Tank quit on a Sunday afternoon with a full house. Hector had a heater on the van and was here in two hours, and the figure he wrote at the door is the figure I paid.”
Rosa T. Lindenhurst · Water heater swap
“Two outfits told me the whole sewer run had to come out. Walt put a camera down, showed me the screen, and it was one bad joint. Targeted dig, a third of the money.”
Ed K. Copiague · Sewer line repair
“Two floods in three years before we rang them. New pit, proper pump, backup battery, and they re-graded the bed outside that two other firms walked straight past. Bone dry since.”
Nina B. Massapequa Park · Basement water
“Brian took the plumbing end of a kitchen rebuild and hit every date he gave our builder. He also caught an old galvanised run behind the plaster before it became our problem.”
Owen R. Bellmore · Kitchen rough-in
“Our kitchen line closed up twice a year and everybody just cabled it. These people jetted it, dropped a camera down, found a sagging section and told us what to do about it.”
Gail P. Islip · Drain jetting
“Split pipe at eleven on a February night. Carol answered on the second ring, talked me through shutting the water off, and a van was outside inside the hour.”
Frank G. Babylon · Emergency call
“They moved us off oil and onto gas and dealt with every bit of the town paperwork. The cellar was tidier when they left than when they arrived, which I did not expect.”
Lucia M. Brentwood · Gas piping
Licensed and on the road

Want Someone There This Afternoon?

Call the shop and you get one of us, not a call centre. Average arrival across western Suffolk runs about seventy-five minutes.

Licensed, Insured, and Stocked From Suppliers We Trust

Northridge

Northridge Supply

Fixtures and parts counter

Vantage

Vantage Heating

Certified tank and tankless

Ironclad

Ironclad Tools

What rides on every van

SSTB

South Shore Trade Bureau

Rated member since 2006

Sentinel

Sentinel Mutual

Bonded and fully insured

GasCheck

GasCheck Registered

Gas fitting and testing

Harborline

Harborline Fittings

Copper, brass and PEX

Fast estimate

Describe the Problem, Get a Real Number.

Every message gets an answer from a plumber inside one working day. Some jobs have to be looked at before anybody can price them, and we would rather tell you that than invent a figure.

Demo form, nothing is sent anywhere.

Thanks. In the live version this lands with the office and a plumber replies inside one working day.

Every Visit Ends With a Free Look Over the Rest.

On the way out somebody checks the valves, the pressure, the heater and the pipework on show, then tells you where it all stands. None of it becomes a sales call. Half the emergencies we attend were obvious and cheap a season earlier.

See the process