Coach House Costs • North Vancouver, Squamish & Sea-to-Sky
Carriage House ADU Cost Guide
What turnkey projects actually cost — and the specific drivers that move your number up or down.
Sea-to-Sky & North-Vancouver ADU pricing
Typical ADU Project Costs
Typical ADU projects in the Sea-to-Sky & North-Vancouver range from $240k to $800k+ depending on size, design, and site conditions.
Single-Storey ADU
$240,000 – $600,000+
Compact and efficient for rentals, guest suites, downsizing, or home offices.
Single-Storey ADU
$240,000 – $600,000+
Compact and efficient for rentals, guest suites, downsizing, or home offices.
Complete, move-in-ready pricing.
Two-Storey ADU & Carriage Homes
$425,000 – $800,000+
More living space while keeping the building footprint compact.
Two-Storey ADU & Carriage Homes
$425,000 – $800,000+
More living space while keeping the building footprint compact.
Ideal when maximizing your property's potential.
Modular Home Pricing
$300 – $500+ per sq ft
Factory-built structure pricing only — not total project cost.
Modular Home Pricing
$300 – $500+ per sq ft
Factory-built structure pricing only — not total project cost.
This generally includes the completed modular home with interior finishes and appliances.
Site costs not included:
- foundation
- excavation and site preparation
- utility connections
- delivery and crane installation
- permits and engineering
These site-specific costs vary significantly between properties.
Cost per Square Foot
Why ADUs Cost More Per Square Foot
Smaller homes often cost more per sq ft than larger homes.
Cost per Square Foot
Why ADUs Cost More Per Square Foot
Smaller homes often cost more per sq ft than larger homes.
That’s because expensive components — kitchens, bathrooms, HVAC systems, and utility connections — are required regardless of the building size, so the cost is spread over less square footage.
Get a realistic estimate for your property
The most accurate way to estimate ADU costs is to review your lot first. With a free lot assessment, we’ll send you:
- what type of ADU is likely possible
- key site constraints
- realistic cost ranges for your specific property
Modular vs. on-site construction
Homeowners can choose from three main build types, depending on property and goals.
Modular / Prefab builds Fastest + most predictable ▾
Built off-site in a controlled environment and delivered 90%–95% complete, modular homes offer the best value and quickest delivery.
Your site work happens while the home is being prefabricated — you save weeks, if not months. They also help reduce architectural and engineering costs.
Best for: homeowners and investors wanting predictable costs, faster completion, and minimal disruption.
We proudly offer modular homes through our partnerships with aux box, Click Modular, Good Way Homes, Hewing Haus and ORCA LGS.
Each unit is sold and installed by NewlinesADU at the manufacturer’s advertised price.
Pre-reviewed carriage homes Faster approvals ▾
Architectural designs already pre-reviewed by the District of Squamish, helping you reduce lengthy design and permit reviews.
Best for: homeowners seeking a legal ADU quickly, without full custom design costs.
Custom carriage homes Highest flexibility ▾
Fully tailored to your property, architecture, and site challenges.
Best for: long-term family use or premium rental properties that need a one-of-a-kind design.
What affects cost
No two properties are the same — and that’s what makes building here both exciting and unpredictable. Beyond the size and finishes of your carriage home, a few local site factors can have the biggest impact on cost.
1 Development Permit Areas (DPAs) ▾
Some neighbourhoods fall within wildfire, floodplain, or streamside protection zones, which require additional reports and design adjustments. These aren’t dealbreakers — they just add coordination and engineering time.
2 Foundation and site conditions ▾
Steep slopes, soil type, or flood construction levels (FCL) can mean deeper foundation or raised habitable space.
If your lot is flat and outside floodzones, this is usually one of the easiest savings areas.
3 Utilities and services ▾
Many older homes need power upgrades to 200 or 400 amps or sewer lift stations to handle the new home. These depend entirely on how your existing systems are set up.
4 Access and layout ▾
Tight driveways, trees, or other physical constraints can affect where a crane or excavation equipment can reach, especially for modular installations. Good access saves both time and money.
5 Design and engineering scope ▾
Custom architecture and Step Code energy modeling naturally increase soft costs, while modular or pre-reviewed plans keep things efficient. Prefabricated models also reduce the need for extensive architectural and engineering work.
The bottom line
These variables are normal in the Sea-to-Sky region — they just need to be identified early. That’s exactly why our Free Lot Assessment exists: we review your zoning, flood levels, access, and services so you know what’s possible (and what’s worth budgeting for) before you start.
Rental potential & ROI
Carriage homes typically rent for $2,000 – $4,300 per month, depending on size, layout, and location.
That means:
- A modest single-storey suite can generate $24,000+ per year in income.
- A larger two-storey carriage home could offset your mortgage or pay for itself over time.
Beyond rent:
A legal secondary dwelling boosts resale value and adds flexibility for future family use or retirement planning.
The smarter way to build
What NewlinesADU handles ▾
At NewlinesADU, we handle every step — from zoning checks and permitting to engineering, site prep, modular coordination, and final installation.
Whether you choose a modular, pre-reviewed, or custom build, our goal is to make the process clear, efficient, and stress-free.
Modular partners ▾
We proudly offer modular homes through our partnerships with aux box, Click Modular, Good Way Homes, Hewing Haus and ORCA LGS.
Pricing promise ▾
Each unit is sold and installed by NewlinesADU at the manufacturer’s advertised price — giving you the benefit of a local Sea-to-Sky builder and a factory-quality product, without extra markups.
Want a number that’s actually based on your lot?
Start with a free remote lot assessment. We’ll confirm what’s likely allowed, where it can fit, and what could drive cost.
24–72h • Remote • No obligation