If you are planning a renovation or building a new home in Ontario, one of the first questions you will ask is: how much does custom trim work actually cost? It is a fair question, and unfortunately, you will find a wide range of answers online. That is because trim work varies enormously depending on the profiles you choose, the materials involved, the complexity of the installation, and the experience of the carpenter doing the work. I’ve been installing custom trim across Durham Region, Whitby, Brooklin, and the greater GTA for over 20 years. Below, I’ll break down realistic pricing so you can plan your project with confidence.

What Counts as “Trim Work”?

Trim work (also called millwork or moulding) includes all of the finished wood details that frame your rooms and give your home its character. The most common trim elements include:

• Baseboards — the moulding that runs along the bottom of your walls
• Crown molding — the decorative transition between walls and ceilings
• Window and door casing — the trim that frames every opening
• Wainscoting — decorative wall paneling, typically on the lower third of a wall
• Chair rail and picture rail — horizontal moulding details at mid-wall height
• Built-up profiles — layered combinations of multiple mouldings for a richer look

Custom Trim Work Price Ranges in Ontario (2026)

The following ranges reflect installed costs (material plus labour) for professional custom trim work in the Durham Region and GTA. These are general estimates — your actual cost will depend on the specifics of your project. Important note: These prices are for professional custom installation using quality materials. Big-box store quotes for basic MDF baseboards installed by a general handyman will be lower, but the result will be noticeably different in fit, finish, and longevity.

What Factors Affect the Cost of Trim Work?

Material Choice

Solid hardwood (oak, maple, poplar) costs more than paint-grade softwood (pine, spruce) or MDF. However, hardwood is more durable, takes stain beautifully, and holds up far better over time, especially in high-traffic areas.

Profile Complexity

A simple, flat-stock baseboard is faster to cut and install than a multi-piece built-up crown molding that requires three or four separate profiles layered together. More detail means more material and more labour.

Room Conditions

Older homes in Whitby and Brooklin often have walls that are not perfectly plumb and corners that are not square. Working with these conditions requires more time, skill, and custom fitting.

Scope of the Project

Larger projects typically have a lower per-foot cost because of efficiencies in setup, material ordering, and workflow.

Height and Accessibility

Crown molding on a 9-foot ceiling is straightforward. Crown in a two-storey foyer or along a vaulted ceiling requires scaffolding, more complex angle work, and significantly more time.

Why Custom Trim Is Worth the Investment

Builder-grade trim in many Durham Region subdivisions is often the minimum: thin MDF baseboards, basic casing, and little to no crown molding. Custom trim work transforms the feel of a home. From a resale standpoint, high-quality trim is one of those details that real estate agents and buyers notice immediately. The CMHC notes that well-planned interior upgrades are among the most effective ways to add lasting value to your home.

How to Budget for Your Trim Project

• Single room refresh (baseboard + casing): $800 — $2,500
• Main floor trim upgrade (baseboard, casing, crown): $5,000 — $15,000
• Whole-home trim package (new build): $15,000 — $45,000+

The best way to get an accurate number is to have a finish carpenter walk through your space, discuss your goals, and provide a detailed quote.

Get a Free Estimate for Your Trim Project

I have over 20 years of experience in custom finishing carpentry across Brooklin, Whitby, and the Durham Region. Whether you’re upgrading builder-grade trim, planning a full custom build, or adding detail to a single room, I’d be happy to walk through your project and provide a clear, honest quote. Get in touch today for a free, no-obligation estimate.