San Diego Water Damage Company sends licensed, IICRC-certified technicians to homes and businesses across Portsmouth, NH — day or night, weekends and holidays included. We stop the damage, dry the structure, and document everything your insurance company needs.


Property owners in Portsmouth don't call a restoration company on a good day — they call because something has already gone wrong, and often at an inconvenient hour. We built our Portsmouth operation around that reality: real people answering the phone, technicians who explain what's happening in plain language, and a process that doesn't leave you wondering what comes next.
San Diego Water Damage Company combines old-fashioned local service with modern extraction and drying technology. Every technician on our Portsmouth team is background-checked, certified, and trained to document the loss thoroughly from the first walkthrough, which makes your insurance claim easier from day one.
Being available 24 hours a day only matters if the crew that shows up actually knows what they're doing. That's why our Portsmouth technicians go through ongoing training on the latest extraction, drying, and antimicrobial treatment methods.
A lot of Portsmouth companies stop once the surface looks dry. We don't. Our technicians use moisture meters and thermal cameras to confirm materials are dry all the way through, because hidden moisture is exactly what leads to mold, warping, and repeat repairs down the road.
Our Portsmouth office keeps trucks stocked and technicians on rotating call so that no matter when disaster strikes — 2pm on a Tuesday or 3am on a holiday weekend — someone is available to answer the phone and start the response process immediately. We know that water damage doesn't check a calendar before it happens, so neither do we.
Every water loss is different, which is why we run a full range of Sewage Cleanup services rather than a one-size-fits-all playbook. Here's what our Portsmouth crews handle most often.
Burst pipes, sewage backups, and sudden flooding don't wait for business hours — neither do we. Our Portsmouth emergency crews arrive with truck-mounted extraction units to pull standing water out fast, then move straight into drying and containment.
Our residential Sewage Cleanup service walks Portsmouth homeowners through every stage: extraction, structural drying, sanitizing, and rebuild — with clear updates so nothing feels like a mystery at any point.
Downtime costs money, so our commercial Sewage Cleanup teams work around your Portsmouth business's schedule wherever possible, using industrial drying equipment to get you reopened faster and with less disruption.
Mold can start growing within 24-48 hours of a water event. We apply antimicrobial treatments and monitor moisture levels in Portsmouth properties to keep it from ever taking hold in the first place.
We don't stop at drying. Our in-house reconstruction crews rebuild what the water took, matching materials and finishes so your Portsmouth property looks the way it did before the loss ever happened.
Our team prepares moisture readings, photo documentation, and scope-of-work reports that Portsmouth adjusters recognize — cutting down back-and-forth and speeding up approval on your claim.
Anyone can put "certified" on a website. Here's what actually stands behind that word at San Diego Water Damage Company.
Every technician we send to a Portsmouth property completes IICRC water damage restoration training (WRT) at minimum, with many holding advanced applied structural drying (ASD) certification as well. That training covers psychrometry, structural drying science, and the safe handling of contaminated water categories — not just how to run a pump.
Beyond initial certification, our Portsmouth team completes ongoing continuing education as IICRC standards are updated, and every new hire is background-checked and drug-tested before joining a crew. When you call San Diego Water Damage Company, you're getting a vetted professional, not a subcontractor pulled from a general labor pool.
Understanding what typically causes water damage in Portsmouth can help you catch a problem early — before it turns into a full emergency call.
Supply lines behind washing machines, dishwashers, and refrigerators wear out over time. When they fail, water can spread through a Portsmouth property for hours before anyone notices, soaking into flooring and cabinetry.
Storm damage often shows up first as a small ceiling stain in Portsmouth properties, but by the time it's visible, water has usually already reached the insulation and framing underneath.
A failed sump pump during a heavy rain event is one of the fastest ways a Portsmouth basement goes from dry to flooded — often within a single storm, with little warning.
Water heaters, washing machines, dishwashers, and HVAC condensation lines are common — and often overlooked — sources of slow leaks that eventually cause significant damage in Portsmouth properties if left unnoticed.
Poor drainage patterns are a frequent contributor to recurring water issues in Portsmouth basements, especially in older neighborhoods with mature landscaping and settled soil.
Water used to extinguish a fire, or an accidental sprinkler discharge, can leave a Portsmouth property with significant secondary water damage that needs immediate attention right after the fire crew leaves.
We keep the process simple and predictable, even when the situation at your Portsmouth property feels anything but.
A real person answers, asks a few quick questions about the damage, and dispatches the nearest available Portsmouth crew.
Our Portsmouth crew shows up in a marked vehicle, walks the property, and identifies every affected area before touching equipment.
We remove standing water first, then move to saturated materials like carpet pad, drywall, and subfloor.
Air movers and dehumidifiers are placed strategically, and moisture levels are checked daily until the structure reads dry.
We finish with a full walkthrough so you can confirm everything meets your expectations before we consider the job complete.
We prepare claim-ready reports along the way rather than scrambling to reconstruct notes after the fact.
A guarantee is only useful if it's specific. Here's what San Diego Water Damage Company commits to for every Portsmouth job.
Every Portsmouth job includes a follow-up check to confirm drying targets were actually hit, not just estimated. If anything falls short — a damp spot behind a baseboard, a reading that's still elevated in a wall cavity — we return and address it without an additional service charge.
Our estimates aren't a ceiling we pad and hope you don't notice — if the job turns out smaller than expected, you pay less. If it turns out to be more involved once we're inside the walls, we pause, show you what we found, and confirm before moving forward with additional work.
Our Portsmouth trucks carry the same class of equipment used on large commercial losses: truck-mounted extraction units, low-grain-refrigerant dehumidifiers, high-velocity air movers, and moisture meters capable of reading behind walls without cutting into them.
Where a household fan just circulates air, our equipment is engineered to extract moisture from the structure itself — from drywall, subfloor, and framing — which is the only way to prevent the mold growth that hidden dampness eventually causes.

Mold, warping, and structural damage set in fast. Reach out the moment you notice water, and we'll have a technician heading your way.
📞 +1-844-499-0972Anyone can promise fast service. Here's what San Diego Water Damage Company actually delivers to every Portsmouth customer.
We quote clearly and explain every charge, so there's nothing sprung on you later once the job is already underway.
Our Portsmouth-based dispatch means a technician is typically on the way within minutes, not hours, because our trucks are already positioned throughout the area.
We hold active NH licensing and ongoing certification, not just a one-time class — training continues year-round.
We work directly with most major insurers and document everything your adjuster needs, so you're not stuck translating technical jargon yourself.
If something isn't right, we come back and fix it — no arguments, no extra charge, and no runaround.
Local experience means fewer surprises and faster, more accurate assessments — we've likely seen a similar loss elsewhere in Portsmouth before.
Nothing tells the story of a Sewage Cleanup job better than the people who lived through it.
"Our water heater failed overnight and by the time we woke up the hallway carpet was soaked. San Diego Water Damage Company had a technician here within the hour and walked us through every step, and the whole area was dry within a few days."
"As a property manager I've used a few restoration companies over the years. San Diego Water Damage Company is the only one that consistently shows up on time and documents everything for insurance, which has saved me hours on every claim."
"Storm flooding got into our basement and I honestly didn't know where to start. The team explained the whole process, worked with our insurance, and got everything dried out within about a week."
"I run a small retail shop and a roof leak during a storm soaked half the store. They got extraction going the same night and had us back open within days, well ahead of what I expected."
"What impressed me most was the honesty. They told us upfront what was salvageable and what wasn't, instead of running up unnecessary charges we didn't need."
Plenty of Portsmouth homeowners try to handle a small water event themselves before calling us. Here's what usually gets missed.
The visible water on your Portsmouth floor is often only part of the problem. Water wicks upward into drywall, travels along subfloor seams, and pools inside wall cavities where a rented fan will never reach it. Without professional-grade dehumidification and moisture monitoring, that hidden dampness can sit for weeks, quietly feeding mold growth long after the surface looks and feels dry to the touch.
There's also the insurance side to consider. Without professional documentation — moisture readings, photos, a written scope of work — it can be much harder to support a claim if secondary damage shows up later. Our Portsmouth technicians build that documentation as part of every job, protecting you if issues surface down the road.
If the water was minor, contained, and cleaned up within an hour or two, DIY handling is often fine. Once it's soaked into materials or sat for any real length of time, though, a professional assessment is the safer move for your Portsmouth property.
Every water loss is different, but these general safety steps apply to most Portsmouth calls we receive.
If the water is coming from a pipe, appliance, or fixture you can safely reach, shut off the supply valve or main.
Never touch electrical switches, outlets, or appliances that are wet or near standing water — the risk of shock is real.
If it's safe, move furniture, electronics, and important documents away from the affected area or up off the floor.
Snap photos or video of the affected areas before anything is moved — this helps your insurance claim later.
If weather allows, opening windows or doors can help slow humidity buildup until our Portsmouth team arrives with drying equipment.
Delaying the call is the most common mistake we see. Standing water only gets more expensive to fix the longer it sits.
Filing an insurance claim after a water loss can feel overwhelming on top of everything else — our Portsmouth team handles the documentation side so you don't have to.
As soon as our Portsmouth crew starts work, they're also building your claim file — photographing every affected area, logging moisture readings at each visit, and preparing a detailed scope of work. That documentation is often the difference between a claim that gets approved quickly and one that drags on for weeks.
In many cases we can bill your insurer directly rather than requiring you to pay in full and wait for reimbursement. Coverage details vary by policy, so our Portsmouth team will walk you through what to expect based on your specific insurance company.
Our Portsmouth service footprint covers residential neighborhoods, commercial districts, and everything in between.
Not sure if your address falls inside our Portsmouth service area? Call +1-844-499-0972 and our dispatcher will confirm coverage and estimated arrival time immediately.
From dense Portsmouth neighborhoods to properties further out on the edge of our service area, we've structured our crews and equipment placement so that response time doesn't depend on luck — it depends on planning.

From historic single-family homes to modern commercial buildings, Portsmouth's property mix is diverse — so is our equipment.
Portsmouth is home to a wide mix of property types — from older single-family homes with original plumbing to newer multi-family developments and commercial corridors. Each of those property types responds to water damage a little differently, and our Portsmouth technicians are trained to recognize those differences rather than applying a one-size-fits-all approach. Older homes, for example, often have plaster walls and original hardwood that require different drying techniques than modern drywall and engineered flooring.
Local familiarity also means we understand which parts of Portsmouth tend to see more basement flooding, which neighborhoods have older plumbing infrastructure, and where storm drainage tends to back up — all of which helps us respond faster and more effectively.
The map below shows our general Portsmouth coverage footprint. Call +1-844-499-0972 to confirm coverage for your exact address.
The faster you call, the less Sewage Cleanup your Portsmouth property needs. Our emergency line is live right now.
📞 Call +1-844-499-0972 — Portsmouth 24/7 Line