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Complete Septic System Design, Permits, Excavation & Installation
Building a new custom home or replacing an aging septic system in King City? With 13+ years of experience, Everest Drain & Plumbing provides complete septic system solutions from initial planning to final inspection for residential, commercial, and industrial.
We coordinate every stage of your project, including septic design, engineering, permit applications, excavation, supply and installation, inspections, and long-term maintenance.
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Whether you’re a homeowner, custom home builder, or general contractor, our experienced team delivers professional, code-compliant septic systems built to last.
Complete septic system installation for new custom homes, estate properties, country homes, farms, and rural developments.
If your existing septic system has reached the end of its lifespan or no longer meets your property’s needs, we provide complete replacement with a modern, Ontario Building Code-compliant system.
Professional installation of high-quality septic tanks sized to your property’s wastewater requirements. We supply and install all kinds and types of septic tanks based on client requirements with custom sizing. Every septic system installed will be fully code compliant with zero negligence.
Properly designed and installed leaching beds that promote efficient wastewater treatment and long-term system performance. A properly designed and professionally installed leaching bed should provide decades of reliable performance with very little maintenance. At Everest Drain & Plumbing, we carefully evaluate your property’s soil conditions, groundwater levels, grading, and septic system requirements to ensure your new leaching bed is built to Ontario standards and designed for long-term durability.
We work with qualified septic designers and engineers to coordinate the following:
We also provide septic inspections, repairs, maintenance recommendations, and replacement of damaged components to help extend the life of your septic system.
Our licensed team manages the entire septic installation process, including site assessment, system design, permits, excavation, septic tank and leaching bed installation, inspections, final grading, and permit closeout—providing a safe, reliable, and code-compliant septic system built to last.
Our goal is to build your septic system right the first time, giving you confidence that your investment will continue performing efficiently for many years.
Planning a new septic system or replacing an existing one? Start with a free, no-obligation site visit from Everest Drain & Plumbing.
We believe homeowners should be able to understand their options before committing to a project. As King City local plumbers, we offer free on-site consultations with zero call-out fees for septic installation and replacement projects.
During your site visit, we’ll:
There are no hidden fees, no sales pressure, and no obligation to hire us after the consultation. Our goal is to help you make an informed decision with confidence.
Whether you’re building a custom home, replacing a failed septic system, or exploring your options for a rural property in King City, our experienced team is here to provide expert guidance from the very first visit.
For most homes in King City and across Ontario, a complete septic system installation or replacement typically falls between $25,000 and $50,000+. This is the average price range where the majority of residential septic projects fall. However, every property is unique, and the final cost depends on factors such as soil conditions, system design, permit requirements, excavation, accessibility, groundwater, and the size of your home.
While it’s often possible to provide a general price range over the phone, the only way to prepare an accurate quotation is by evaluating your property. That’s why Everest Drain & Plumbing offers a free, no-obligation on-site consultation in King City.
During our visit, we’ll assess your site, discuss your project, and provide a clear, itemized quotation with a detailed breakdown of the work involved—from design and permit coordination to excavation, material supply, installation, inspections, and final grading. We explain every step so you know exactly what you’re paying for before work begins.
At Everest Drain & Plumbing, we believe honest advice, transparent pricing, and clear expectations are what set us apart. Our goal is to help you make an informed decision with confidence—without hidden fees or unexpected surprises.
Please note: The above pricing is provided as a general planning guide based on typical residential septic installations in Ontario. Every property is different, and a site assessment is required to prepare an accurate quotation.
Whether you’re building your dream home or replacing a failing, aged septic system, our professional team provides expert guidance from planning through completion.
We simplify the process by coordinating permits, engineering, excavation, installation, and inspections, giving you confidence that your project is completed properly and efficiently.
Everest Drain & Plumbing proudly partners with custom home builders, developers, and general contractors throughout King City.
We integrate seamlessly with construction schedules, coordinate with project teams, and deliver reliable, code-compliant septic installations that keep your project moving forward.
Choosing the right septic contractor is just as important as choosing the right septic system. At Everest Drain & Plumbing, we combine professional workmanship, clear communication, and complete project management to deliver reliable septic installations that are built to last.
Our team is fully licensed and carries comprehensive general liability insurance and WSIB coverage, providing protection for both our workers and your property throughout the project.
From excavation to final grading, we follow industry best practices and strict safety procedures to help protect your home, your family, our crew, and the surrounding environment.
Every septic system is installed according to the approved design, manufacturer specifications, and Ontario Building Code requirements. We take pride in delivering clean, precise work with a focus on long-term performance.
You’ll have a dedicated project manager who oversees your septic installation from start to finish. Your project manager coordinates every stage of the work, answers your questions, provides regular updates, and is available throughout the project.
Our relationship doesn’t end after installation. We provide one year of complimentary service and support to answer questions and help ensure your new septic system continues to operate properly.
We’re a local company that regularly serves King City and the surrounding communities. Because we’re nearby, we can respond quickly, understand local site conditions, and provide dependable ongoing support.
We simplify the entire process by coordinating septic design, engineering, permits, excavation, material supply, installation, inspections, and final site restoration—all under one experienced team.
We believe in clear communication, detailed quotations, and no hidden surprises. You’ll know what’s included in your project before work begins.
Whether you’re building a custom home, replacing an aging septic system, or managing a construction project, we work closely with homeowners, custom home builders, and general contractors to deliver projects on schedule and to a high standard.
Yes, we are fully licensed. In Ontario, anyone installing or designing a septic system must be registered with the Ministry of Municipal Affairs and Housing (MMAH). We hold a valid BCIN (Building Code Identification Number) as both a qualified Installer and a registered Firm. Our BCIN is fully searchable on the provincial QuARTS public registry, and we provide it explicitly on every permit application we submit to King Township.
Yes, our technicians receive specialized factory training and certifications directly from the manufacturers of advanced tertiary treatment units. In Ontario, traditional systems just require an installer license, but proprietary biofilters require certified specialists. Because we are certified, we can install these advanced units and set up the manufacturer-mandated annual maintenance agreements required by King Township to keep your system compliant.
In King Township, a building permit for a brand new sewage system or a major expansion costs a flat fee of $1,623.00 (exempt from HST). Minor alterations or tank replacements cost $324.00. We itemize these costs clearly: our quotes explicitly state whether we are paying the Township directly on your behalf through the CityView portal, or if you will be paying the municipal invoice yourself. There are never hidden fees.
The actual physical installation takes 2 to 5 days for a conventional system and up to a week for complex tertiary systems. However, the entire process from initial soil testing and drafting blueprints to waiting for municipal permit approvals and booking the mandatory final open-trench city inspection usually takes 4 to 8 weeks.
Only if your current system has the calculated capacity to handle it. Under the building code, adding a bedroom or a major plumbing fixture increases your home’s Total Daily Design Sanitary Sewage Flow. Before the town issues a renovation permit, you must submit a Sewage System Evaluation. If the paperwork shows your existing tank or bed is too small for the newly calculated load, you will be forced to upgrade the septic system before building your addition.
Yes, you absolutely need a full building permit. Your neighbor is wrong. Under Part 8 of the Ontario Building Code, replacing a septic tank is considered a material alteration to a sewage system. The Township of King requires a formal building permit application submitted through their online CityView Portal before any excavation or replacement begins. If you swap it without a permit, it is illegal, and the Township can force you to dig it up for an inspection at your own expense.
The Township of King evaluates septic systems based on total daily design sanitary sewage flow, not just your current usage. Under OBC Div. B 8.2.1.3, adding a bedroom automatically increases the calculated daily flow design capacity of your home because it increases the maximum occupancy potential. Before issuing a building permit for your home renovation, the town requires a Sewage System Evaluation Declaration to prove your existing tank and leaching bed can handle the new calculated load. If it can’t, you must upgrade the septic system first.
Yes, significantly. The Oak Ridges Moraine has strict environmental conservation bylaws to protect groundwater. When we apply for your septic permit, your site plan must explicitly clear Oak Ridges Moraine Conformity via the King Township Planning Department. Because of the sensitive hydrogeology and strict setback rules from eco-pockets, standard traditional layouts often will not pass. We usually have to design advanced tertiary treatment systems or raised filter beds to ensure extra environmental protection.
We handle the entire process start to finish. Our 15 years of experience in King City means we manage the soil assessment, percolation (T-time) calculations, and design layouts internally. If your property presents extreme structural challenges—such as steep slopes over the Oak Ridges Moraine or an exceptionally high water table—we bring in our partner Professional Engineers (P.Eng.) to stamp the architectural plans. You do not need to coordinate with third parties.
