Septic system installation in Kingston & Eastern Ontario
New systems for rural homes, cottages and garden suites, designed for the soil and rock on your lot, permitted under the Ontario Building Code and installed by our own crew. Prices published, quotes in writing.
New septic systems, start to finish
Every rural home without municipal sewer needs an on-site sewage system, and in Ontario it must be designed, permitted and installed under Part 8 of the Ontario Building Code. We manage that whole process for new homes, cottages, additions and garden suites in the Kingston area. One contractor handles the test pits, the design, the permit application, the excavation, the install and the inspections.
- Site evaluation and test pits (depth to rock, water table, percolation)
- System design sized to bedrooms and fixtures
- Permit application to your principal authority, inspections booked and attended
- Tank, distribution box, header and leaching bed installation
- Final grading, topsoil and seed
- A written care sheet, and a copy of the as-built drawing for your records
Septic systems we install
| System | Where it fits | 2026 installed range |
|---|---|---|
| Conventional (Class 4) bed | Lots with 900 mm or more of suitable soil above rock and groundwater | $15,000 to $40,000 |
| Raised (mound) bed | Shallow soil over bedrock, the norm around Kingston, Sydenham and Napanee | $20,000 to $50,000 |
| Filter bed | Smaller footprints with usable soil; a specified sand filter treats the effluent | $20,000 to $45,000 |
| Advanced treatment unit + bed | Tight or wet lots, near water, where extra treatment allows a smaller bed | $25,000 to $65,000 |
| Holding tank (Class 5) | Where no bed is possible; pumped regularly, needs an agreement with a hauler | $8,000 to $15,000 |
Ranges reflect what Ontario cost guides and local quotes show in 2026. Your written quote will be specific to the test pit results.
Which septic system fits my lot?
Three questions give you the likely system type. Test pits confirm it.
Likely system
Answer the three questions
Sizing also depends on bedrooms and fixtures, which set the daily design flow under the Code.
Get a design quoteWhat happens on an install
Test pits
Two or three pits with the excavator so the inspector and we can see the soil profile and depth to rock.
Design & permit
Daily design flow from bedrooms and fixtures, bed sizing from the soil T-time, setbacks from the well, house and water. Submitted with a site plan.
Excavation & set
Tank set level on a bed of stone, header and laterals laid to grade, imported sand and stone for raised beds.
Inspect & cover
Inspector sees it before cover. Then topsoil, grade for drainage, seed, and your care sheet.
Related
Replacing rather than building new? See leaching bed replacement. On rock? Read about raised septic beds. Not sure who issues your permit? Use the permit finder. Building the house too? Limitless Build schedules the septic with the build.
Get a septic installation quote
Send the property's town and what you need. If you're working to a closing date or a building permit deadline, say so and we'll prioritize. Answers from the tools on this page come through with the form.
Phone: 343-342-3461
Hours: Mon to Fri, 8 am to 5 pm
Office: 945 Princess Street, Kingston, ON K7L 3N6
Installation questions
How long does a septic installation take?
Once the permit is issued, most residential installs take three days to two weeks on site, depending on system type, rock and weather. Design and permit approval come first and add two to six weeks, so start early on a new build.
What type of septic system will I need?
It depends on soil depth, depth to bedrock or groundwater, lot size and household size (bedrooms and fixtures set the daily design flow). Options range from a conventional tank and bed to raised beds, filter beds and advanced treatment units. Use the system matcher above for a first answer.
How much does a new septic system cost?
In 2026, $15,000 to $40,000 for a conventional system, $20,000 to $50,000 for a raised or filter bed, and $25,000 to $65,000 for advanced treatment, plus $2,000 to $8,000 for the site evaluation, design and permit. Full breakdown in the cost guide.
Can I add a bedroom or a garden suite to my existing system?
Sometimes. Adding bedrooms or a second unit increases the design flow, and the system may need to be expanded or replaced. We assess the existing system and tell you before you commit to the addition.
Can you install in winter?
Often, yes, though frozen ground and snow add cost and some sites are better left until spring. We'll be straight with you about timing.
Do I need a permit to install a septic system?
Yes. Every new or replacement system in Ontario needs a permit under Part 8 of the Ontario Building Code. Around Kingston the issuing authority varies by township; our permit finder names yours.