Septic tank installation done to county code, the first time.
Tank replacement runs $3,500 to $8,500 for a like-for-like install on most San Diego County properties. We pull the permit through the Department of Environmental Health, excavate, set the new tank to spec, connect inlet and outlet lines with code-compliant baffles and tees, backfill, and stay through the inspection. Concrete tanks for long-term durability, polyethylene for tight access or high water table sites.
What's included in this service?
- County DEH permit application and plan submittal
- Excavation, bedding prep, and tank setting (1,000-2,500 gallon residential)
- Concrete tank installs (Jensen Precast and equivalent SD-area suppliers)
- Polyethylene tank installs (Norwesco, Snyder) for tight-access or high-water-table sites
- Inlet baffle, outlet baffle, and effluent filter installation
- New 4-inch SDR-35 inlet line from house, properly sloped
- Riser installation to grade with bolt-down lids and gas-tight seals
- On-site county inspection coordination and final sign-off
When do you need this service?
- Existing tank has cracked, collapsed, or rusted through (steel tanks past end of life)
- Real-estate inspection flagged tank failure as a deal contingency
- Adding bedrooms or bathrooms requires a larger tank per county code
- Building a new home or ADU outside sewer service area
- Tank is undersized for current household and you keep needing emergency pumps
- County violation notice requires upgrade to current standards
What do homeowners ask about Tank Installation?
How long does a septic tank installation take?
The dig and set itself is one to two days for a standard residential tank. The full project — permit, install, inspection, backfill, restoration — runs 4-8 weeks because of county DEH timelines, not because of the work. We schedule the dig once the permit is approved so you only have an open hole for 1-2 days.
Concrete or polyethylene — which is better?
Concrete lasts 40+ years and is the SD County default for residential. Polyethylene is lighter, ships in tighter access, and resists corrosion in high-water-table or aggressive-soil sites — but needs careful backfill to avoid deformation. We'll recommend based on access, soil, and budget — both are county-approved.
Can I install a tank without a permit?
No. San Diego County DEH requires a permit for any tank install or replacement, and permitting protects you at resale (unpermitted work fails real-estate inspections). We pull the permit, handle the inspection, and you get a closed permit on file. Unpermitted installs are a recipe for a denied claim if anything goes wrong.
Do you offer financing?
We work with regional financing partners for septic projects over $5,000. Approval is usually next-day. Ask when we quote — we'll walk through monthly payment options alongside cash pricing.
Where do we offer Tank Installation in San Diego County?
We provide tank installation in every city and community in San Diego County. Pick your city for local climate notes and service specifics.
See tank installation in all 48 cities
Homeowners who hired us for this
Bought our place 4 years ago and never had the tank serviced. Tank Pro showed up on the day they said, took the time to measure sludge, walked me through what they found, and set us up for a clean schedule going forward. No upsell, no panic.
Had wet patches on the lawn and three other companies tried to sell me a $20K replacement. Tank Pro diagnosed it carefully, jetted the field, retrofitted an effluent filter, and bought us 5+ years for a fraction of the price. Real diagnosis, honest call.
Old steel tank had finally rusted through. They handled the county DEH permit, picked the right concrete tank for our access, and had it installed and inspected in 5 weeks total. Crew was clean, communication was clear, no surprise charges.
Need tank installation in San Diego County?
Call for a free quote. Most work scheduled within the week.