*Trim that fits**old walls*

Finish carpentry is where a room gets its character. We install and repair baseboard, crown, casing, shelving and built-ins, scribing to walls and floors that are rarely straight, so the joints stay tight and the lines read clean.

Free carpentry & trim estimate (503) 781-2093

Finish Carpentry & Trim — a real job, gently animated

Most houses in the Portland area have walls that are not quite plumb, floors that are not quite level and corners that are anything but square.

Good finish carpentry deals with that quietly.

Good finish carpentry deals with that quietly. We cope inside corners on baseboard and crown molding instead of relying on caulk, scribe trim to uneven floors, and set casing reveals evenly around doors and windows. The result is trim that looks as if it grew with the house rather than being added to it later.

Repairs are a big part of the job too. During one kitchen project, a client’s review recalls, Shawn carefully salvaged the existing crown molding while a pantry cupboard came out, so the remaining cabinets kept their original look. We match old profiles where we can, rebuild damaged sections, and replace baseboard and casing that has been chewed by pets, cracked by settling or stained by water. On older Portland homes, keeping original trim is often the better choice.

We also take on small framing and built-in projects. Another reviewer had Shawn build a wall in her home office and still gets comments on how smoothly the door closes. Closet shelving, window seats, open shelving, wainscoting and simple built-in cabinets round out the work. Triple SSS is licensed and insured under CCB #215023, and we serve Gresham, Portland, Lake Oswego, West Linn, Tigard and the towns between.

Book a free walkthrough

Everything about carpentry & trim.

Wood stair railing with square balusters wrapping a carpeted stairwell

Wood railing with square balusters turning down a carpeted staircase

Vintage wooden oar mounted as a handrail beside dark-stained stairs

Rustic wood beam mantel above a brick fireplace

Built-in open wood shelves recessed into a wall beneath a hanging light

Built-in kitchen desk with drawers and glass-front upper cabinets in matching wood

Row of new white shaker base cabinets being set beside a range, before the countertop goes on

Wide window in a freshly mudded drywall wall above new wood-look plank flooring

Pair of pine plank barn doors with Z-bracing on a black bypass track

Two new windows either side of a mosaic-tile column in a wood-panelled living room

Floor-to-ceiling marble-look tile fireplace surround with a slim black mantel shelf

Wall opening finished with a wood sill and fresh white trim where an interior door and wall were removed

Remodelled kitchen with wood cabinets, black countertops, an island with bar stools and stainless wall ovens

01 / 04Our work · New stair railing

The work, in detail.

New baseboard and shoe molding throughout a room or house, coped at inside corners and scribed to the floor.
Our work · Built-in wall shelves
Crown installed or repaired in living rooms, dining rooms and kitchens, with tight joints even on walls that are not square.
Our work · Built-in kitchen desk
Casing, head trim and stools installed or replaced with even reveals, including matching older profiles where possible.
Our work · Base cabinets going in
Splicing in new sections of trim that match historic or discontinued profiles so repairs blend into the room.
Our work · Window, drywall and floor
Built-in closet shelving, pantry shelves and open wall shelves, anchored solidly to framing so they never sag.
Our work · Plank barn doors
Simple built-in bookcases, benches and window seats designed to fit the room and finished to match your trim.
Our work · Window pair, inside
Beadboard, board-and-batten and applied panel molding that add depth to dining rooms, halls and stairwells.
Our work · Tiled fireplace surround
Framing new non-structural walls to divide a room or create an office, finished with drywall, trim and a door.
Our work · Opened wall with wood sill
Prehung and slab interior doors hung square, with casing and hardware fitted so they close smoothly every time.
Our work · Kitchen remodel with island

When to call us.

01Gaps between baseboard and floor, or open miters at the corners.
02Crown molding that has separated from the ceiling.
03Door casing that is cracked, split or missing pieces.
04A room that feels unfinished without proper trim.
05Closets with a single sagging rod and no usable shelving.
06A space you want divided into a home office or extra room.

Four steps, no surprises.

1
Free carpentry estimate
We look at the room, measure, and talk through profiles, materials and paint or stain finishes.
2
Choose profiles & stock
You pick trim styles and wood species; we order material and let it acclimate in the house before cutting.
3
Cut, fit & install
Every piece is measured in place, coped or mitered, scribed where needed and fastened solidly.
4
Fill, finish & clean
Nail holes are filled, joints caulked and sanded, and trim is left paint-ready or finished as agreed.

Why it matters here.

Portland’s housing stock is full of carpentry character, from Craftsman bungalows in Southeast and Northeast Portland to mid-century ranches across Gresham and Parkrose.

Much of it still has original fir trim that is worth keeping. The damp climate also means wood moves through the year, so trim installed without acclimation or proper joinery opens up after the first winter. In newer homes in Happy Valley and Damascus, upgrading thin builder-grade baseboard and casing is one of the most noticeable improvements a room can get.

Carpentry & Trim in Gresham Carpentry & Trim in Portland Carpentry & Trim in Troutdale Carpentry & Trim in Boring Carpentry & Trim in Sandy Carpentry & Trim in Happy Valley Carpentry & Trim in Lake Oswego Carpentry & Trim in West Linn Carpentry & Trim in Tigard Carpentry & Trim in Wilsonville Carpentry & Trim in Salem Carpentry & Trim in Vancouver

In their words.

5.0

Google reviews

Shawn did an excellent job building a wall in my office. Solid construction, and everything is so plumb that I keep getting comments on how smoothly the door closes! He arrived on time, with all supplies and tools needed.

Triple SSS Construction helped us with a couple of projects at our home to make it easier for us to age in place here. Shawn and his crew did excellent work, kept the work area clean and were respectful of our situation. We received a clear and inclusive bid within a reasonable time and the work was completed by the expected finish date.

We had a fairly significant structural issue in the attic above our garage. Shawn performed a complete reconstruction to not only restore the roof to the original slope but he designed a new truss system that provided safe and efficient storage. His calculations were so precise that the gutters remained in place. He matched the new roofing to the existing and it looks outstanding.

Read every review Leave us a Google review

Asked & answered.

Don’t see yours? Call (503) 781-2093.

How much does it cost to install baseboard or crown molding?

It depends on the length of trim, the profile and material, the number of corners and how far the walls are out of true. Painting, removing old trim and patching after removal also change the scope. We measure each room at the free estimate and give you a written price.

Can you match my old trim?

Often, yes. Many common profiles are still available, and others can be closely matched by combining stock moldings. For truly unusual historic trim, a mill may need to cut a custom profile. We look at what you have and tell you the most practical way to match it.

Can you build a wall to make a home office?

Yes, for non-structural partition walls. We frame the wall, hang and finish drywall, install a door and trim, and leave it ready for paint. New outlets, switches or lights need a licensed electrician, which we do not provide, so we plan the framing to make that part straightforward for them.

Should trim be painted or stained?

It depends on the wood and the style of the house. Painted trim suits most modern and many older homes and is easier to repair. Stained fir or oak suits Craftsman houses and anywhere the original wood is still in good shape. We can leave new trim paint-ready or finish it to match.

What is the difference between rough and finish carpentry?

Rough carpentry is the structure: framing walls, floors and roofs. Finish carpentry is everything you see afterward, such as trim, doors, shelving and built-ins, where precision and appearance matter most. We do both, which helps when a trim job uncovers framing that needs straightening first.