Building in Port Coquitlam: Duplexes, Triplexes and Suites
Most Port Coquitlam lots can hold three to six homes. Here’s what’s allowed, what it costs, and the street work most people miss.
5.0 5 Google reviews- Up to 6
- homes near frequent buses
- 0.75
- FAR for a duplex
- $104,930
- street work on one lot
At a glance
On most Port Coquitlam lots, you can build up to four homes, and near frequent buses on Lougheed Highway you can build up to six. A duplex gets 0.75 floor area ratio and a triplex gets 1.0, but a triplex is only allowed near those bus stops. Plan for street and service work too: on one recent lot, it cost $104,930.
Duplex, triplex or suites
Triplexes near frequent buses. Duplexes and backyard homes almost everywhere.
Street work priced early
Off-site works can cost $10,000 to $20,000 per metre of frontage.
Development Permit first
Needed for duplexes, backyard homes and three or more homes.
01
How many homes can you build?
It depends on your lot size and how close you are to frequent buses. This applies to lots zoned RS1, RS2, RS3 or RS4:
| Your lot | Homes allowed |
|---|---|
| 280 m² (3,014 sq ft) or smaller | Up to 3 |
| Bigger than 280 m² | Up to 4 |
| Bigger than 280 m², within 400 m of a frequent bus stop | Up to 6 |
Frequent bus stops are mostly along Lougheed Highway, and lots near SkyTrain follow different rules. Your homes can be a house with a suite and backyard homes, a duplex with suites, or a triplex.
02
How much floor area do you get?
Port Coquitlam gives more floor area for more homes. The floor area ratio (FAR) is the floor area you’re allowed, as a share of the lot:
| What you build | Floor area ratio | On a 500 m² lot |
|---|---|---|
| A house | 0.50 | about 250 m² (2,690 sq ft) |
| A house with a suite | 0.60 | about 300 m² (3,230 sq ft) |
| A duplex, with or without suites | 0.75 | about 375 m² (4,040 sq ft) |
| A triplex, near a frequent bus stop | 1.0 | about 500 m² (5,380 sq ft) |
Backyard homes get a bonus, because up to 90 m² (970 sq ft) of a backyard home doesn’t count. Some garage space doesn’t count either: up to 23 m² for each duplex or triplex home.
03
What are the building rules?
| Rule | Requirement |
|---|---|
| Height | 10.5 m and 3 storeys, counting basements |
| Lot coverage | 50%. Up to 55% for a triplex near a frequent bus stop |
| Front yard | 6.0 m. Can be 4.0 m with a lane, rear parking, or near a frequent bus stop |
| Back yard | 7.5 m. Can be 6.0 m for a triplex near a frequent bus stop |
| Side yards | 1.2 m, or 2.4 m beside a street |
| Building depth | No more than 20 m |
| Hard surfaces | No more than 70% of the lot |
| Outdoor space | At least 15 m² for each home |
| Parking | One space per home, up to three per lot. Off the lane if there is one |
04
What permits do you need?
First you need a Development Permit. Port Coquitlam asks for one on new duplexes, backyard homes and anything with three or more homes. Then you apply for the building permit.
A few things can add steps:
Key points
- Old covenants. Some titles ban suites. That covenant has to be removed first
- Flood areas. Bedrooms and living rooms can’t be below the flood level
- Streams. Within 15 m of a creek, you may need a watercourse permit
- Trees. You may need a tree report and a tree cutting permit
05
What does the street work cost?
This is the cost most people miss. New homes often need work outside your lot, like water and sewer lines, sidewalks, street lights and lane access. The City says it can cost $10,000 to $20,000 per metre of frontage.
- The two biggest items
City of Port Coquitlam: Small-Scale Multi-Unit Housing Municipal Infrastructure Costs Guide. Natural gas connection not included
The cost is per lot, not per home, so a duplex or triplex pays about the same as a house. On older streets, upgrades can add $100,000 to $200,000 more, and corner lots with two lanes have cost over $100,000 extra. We get an engineer’s estimate before you commit.
06
What does Port Coquitlam charge?
| Charge | Per home |
|---|---|
| Development Cost Charge (roads, drainage, sewer) | $8,897 |
| Parkland charge (most of the city) | $1,788 |
| Amenity Cost Charge, from June 29, 2026 | $8,038 |
| Total city charges | about $18,700 |
Suites and backyard homes don’t pay these charges, but Metro Vancouver, TransLink and school charges come on top. A new parks charge is being reviewed. If you apply before it changes, you get 12 months at today’s rates.
07
Which build suits a Port Coquitlam lot?
Away from frequent buses, you can’t build a triplex, so the main choice is a duplex with suites or a house with a suite and backyard homes. A duplex gets more floor area, and each half can be sold.
Near Lougheed Highway buses, a triplex gets the most floor area and the most homes you can sell. See how the options compare. Next door, Coquitlam is a different city with different rules. We also build in New Westminster.
How we work
One team from lot check to keys
- 01
Lot check
Zoning, frontage, trees and servicing, checked first.
- 02
Design
In-house architectural design, to your lot’s rules.
- 03
Permits
We act as your representative with the City.
- 04
Interiors
Finishes chosen while the permit is in review.
- 05
Price & schedule
Both set out in writing before we break ground.
- 06
Build & handover
Daily updates in your portal, then the keys.
Why T-City
One team, or three?
Most delays and surprise costs start in the handoffs between a designer, a permit consultant and a builder who meet for the first time on your project. Here is what changes when one team does all three.
| Stage | T-City, one team | Hiring separately |
|---|---|---|
| Before you pay for design | A free lot check, with a reply in one business day | A designer’s fee, often before anyone confirms what the lot allows |
| Who designs it | Our in-house team, who also build it | An architect or designer, separate from the builder |
| Permits | We act as your representative with the City | You or your designer manage the file |
| Price | In writing, with a schedule, before we break ground | Known after design, when builders tender on the drawings |
| Contracts | One, from design to keys | Two or three: design, permits and construction |
| During the build | Daily photo and video updates in your client portal | Depends on the builder you hire |
| Who you call | Tommy or Andrew, from first visit to handover | A different contact at each stage |
Reviews
What our clients say
5.0 5 Google reviews →Check What My Lot Allows“The team was professional, helpful, and easy to work with throughout the process. They paid attention to the details, communicated well, and made sure everything was done properly.”
Client testimonial
After struggling to find a reliable builder for our duplex project, we found T-City, and they delivered beyond expectations. They helped us maximize our lot, managed all the permits, and finished on time with zero surprise costs. Highly recommend for multi-unit builds.
Client testimonial
We hired T-City to build a laneway home on our property in Burnaby, and the process was smooth from start to finish. They handled permits, design, and construction with total transparency. The portal updates were a nice touch and gave us peace of mind.
Client testimonial
T-City built our dream home from the ground up, and the experience couldn’t have been better. Tommy and Andrew were professional, organized, and genuinely cared about getting the details right.
Common Questions
Frequently Asked Questions
How many homes can I build in Port Coquitlam?
Up to three on lots of 280 m² or less and up to four on bigger lots, or up to six within 400 m of a frequent bus stop.
Can I build a triplex in Port Coquitlam?
Only within 400 m of a frequent bus stop, which mostly means along Lougheed Highway, where a triplex gets 1.0 floor area ratio.
What is the floor area ratio for a duplex in Port Coquitlam?
0.75, with or without a suite in each half. A house gets 0.50, or 0.60 with a suite.
Do I need a development permit in Port Coquitlam?
Yes, for new duplexes, backyard homes and anything with three or more homes, and it comes before the building permit.
What are Port Coquitlam’s development charges for a duplex?
About $18,700 in city charges per duplex home: $8,897 development cost charge, $1,788 parkland charge and $8,038 amenity cost charge. Suites don’t pay them.
Lot Check
Check what your lot allows
Send us the address. We check the zoning, lot size, frontage and transit rules in Port Coquitlam and reply within one business day, with no obligation.
- Emailinfo@tcitydevelopments.com
- Tommy778-239-2078
- Andrew604-230-9134
- Service AreaVancouver, Burnaby, Richmond, Surrey, Coquitlam, North Vancouver, New Westminster, Port Coquitlam & Delta