Overview
Basement Suite in Coquitlam
Coquitlam's Secondary Suite Program allows secondary suites in most single-family residential zones across the city. The BC Building Code requirements apply throughout: a minimum 2.4 metre ceiling height in all habitable spaces, a private exterior entry separate from the main dwelling, a self-contained kitchen and bathroom, egress windows in every below-grade bedroom, and a one-hour fire-rated assembly between the suite and the floor above. Coquitlam's housing stock creates a range of baseline conditions for secondary suite construction — from the challenging Maillardville character home basements to the straightforward full-height basements in Burke Mountain's newer construction.
Austin Heights and Ranch Park homes from the 1960s and 1970s represent Coquitlam's most active secondary suite market. These homes have full unfinished basements with ceiling heights that typically hover near the 2.4 metre minimum — site measurement at the visit determines whether floor lowering is required. Westwood Plateau and Burke Mountain homes from the 1990s through 2020s commonly have 8-foot or 9-foot basement ceilings that comfortably exceed the minimum. City of Coquitlam Development Services processes secondary suite permits in 4 to 6 weeks.
Areas Served
Coquitlam Neighbourhoods
Maillardville
Coquitlam's oldest character homes. Basements in pre-1950 Maillardville homes are frequently below the 2.4 metre minimum ceiling height, requiring floor lowering to qualify. Galvanized plumbing is typically replaced during the suite build in these homes.
Austin Heights and Ranch Park
Coquitlam's most active secondary suite market. 1960s and 1970s homes with full unfinished basements. Ceiling heights near the 2.4 metre threshold — site measurement determines floor lowering requirement. Electrical panels commonly 100-amp and may require upgrade for a separate suite subpanel.
Westwood Plateau
1990s planned residential with full-height basements commonly 8 feet or 9 feet from slab to joist. Most properties qualify without floor lowering. Suite conversion scope focuses on framing, layout, fire separation, separate entry, and finishes.
Burke Mountain
Newest Coquitlam residential with full-height basements often roughed-in for future suites during original construction. Converting a roughed-in basement to a legal suite requires framing, electrical, drywall, kitchen and bathroom finishes, and a City of Coquitlam secondary suite permit.
Permits
Coquitlam Permits and Process
City of Coquitlam Development Services processes secondary suite permits in 4 to 6 weeks. The permit application requires drawings showing the suite layout, fire separation assembly, egress windows, separate entry, and mechanical provisions. Rough-in inspections cover framing, electrical, plumbing, and fire separation. The suite cannot be legally occupied until the final inspection is passed and the permit is closed. WorkSafeBC coverage is required on all Coquitlam permitted jobsites.
Coquitlam's secondary suite program does not apply to strata-governed properties — most strata corporations in Coquitlam prohibit secondary suites within individual units. The program applies to single-family detached homes in eligible residential zones. Burke Mountain HOA-governed properties should be reviewed against HOA covenants before the suite project is estimated, as some covenants restrict secondary suite construction.
Transparent Pricing
$80K–$180KBasement Suite Cost in Coquitlam
All prices in CAD. Floor lowering to reach the 2.4m minimum in older Austin Heights or Maillardville homes adds $20K to $60K.
Common Questions
Basement Suite Contractor Coquitlam — Your Questions
Get a Quote
Tell us about your Coquitlam project.
Send your project details. A contractor will be in touch within one business day. Licensed, insured, WorkSafeBC registered. All prices in CAD.