Skip to main content

Project Gallery

ADU & Room Additions

Master Suites, Family Rooms, and Second-Story Additions
LocationTarzana & Los Angeles, CA

Permitted room additions, ADUs, master-suite expansions and second-story builds in Tarzana and the LA area. See the ADU and room addition service page or request a free estimate.

This project added approximately 400 square feet of conditioned living space to a 1950s ranch home in Tarzana — a primary suite addition that gave the homeowners a spacious bedroom, a walk-in closet, and a five-fixture bathroom where a cramped two-bedroom layout had previously served a family of four. The addition tied into the existing rear elevation, matching the original roof pitch and exterior stucco texture so the new volume reads as original construction, not an afterthought.

The project followed a classic design-build sequence: architectural plans and structural engineering (the addition spans a new post-tensioned slab on grade tied to the existing foundation with epoxy-set dowels), LADBS plan check and permit (5 weeks), site preparation and formwork, foundation pour with 3,000-PSI concrete, wood framing (2×6 exterior walls, engineered truss roof system), roofing tie-in with matching composition shingle, stucco exterior with integral color matched to a core sample of the existing finish, and interior rough-in and finish matching the specifications below.

Interior highlights: 9-foot ceilings throughout the addition (the original house has 8-foot, so we vaulted the addition for a sense of volume), engineered hardwood flooring in the bedroom, porcelain tile in the bathroom, a custom walk-in closet system with floor-to-ceiling adjustable shelving and soft-close drawers, and a bathroom with a curbless shower, freestanding tub, double vanity, and private water closet. The HVAC system was extended with a dedicated zone and a mini-split for fine temperature control independent of the main house.

What it is

ADUs — Accessory Dwelling Units

Independent secondary living spaces on the same lot as a primary home — backyard cottages, garage conversions, in-law suites and detached studios — each with their own kitchen, bathroom and entry. California’s permissive ADU laws make these the fastest way to add usable square footage and long-term rental income on most residential lots.

  • Detached 1- or 2-bedroom backyard cottages, 400–1,200 sq ft
  • Garage-to-living-space conversions
  • Junior ADUs (JADU) carved out of the primary home
  • Two-story ADUs where lot coverage allows
What it is

Room Additions

Expansions of the existing home rather than separate units — bumping out a kitchen, adding a master suite, popping the roof for a second story, attaching a sunroom or family room. Footprint, structural work, MEP and finish carpentry are handled in-place so the new space flows naturally with what’s already there.

  • Primary-suite additions with walk-in closet + en-suite
  • Second-story builds over a single-story home
  • Family-room, sunroom and great-room bump-outs
  • Home-office and bonus-room expansions
Our process

We handle the full path end-to-end: design + structural engineering, City of LA / county permitting, foundation, framing, MEP rough-in, drywall, finish carpentry and final inspections. Typical timelines once permits issue: 12–20 weeks for a detached ADU, 8–14 weeks for a room addition, depending on scope, structural complexity and inspector schedule.

Independent units

ADUs — Accessory Dwelling Units

Detached cottages, garage conversions and JADUs — each with their own kitchen, bath and entry.

Modern Oak ADU
Modern Oak ADUDetached oak-clad backyard cottage with floor-to-ceiling glass and concrete patio
White Plaster Suite ADU
White Plaster Suite ADUDetached stucco ADU with sliding glass wall, bedroom suite and outdoor kitchenette
Garden Cottage ADU
Garden Cottage ADUDetached stucco guest cottage with shed roof framed by drought-tolerant landscaping
Open-Plan ADU Interior
Open-Plan ADU InteriorLight-oak kitchen island and living room under beamed ceiling with steel garden doors
Project image — Master in Design
Project image — Master in Design
In-place expansions

Room Additions

Master suites, family rooms, sunrooms and second-story builds attached to the existing home.

Second-Story Addition
Second-Story AdditionSecond-story addition with vertical wood cladding and floor-to-ceiling upper windows
Primary Suite Addition
Primary Suite AdditionVaulted primary-bedroom addition with beamed ceiling, plaster fireplace and arched window seat
Formal Living Addition
Formal Living AdditionFront sitting room with stone fireplace, window seat, crown molding and white boucle seating
Primary Bedroom Addition
Primary Bedroom AdditionCoffered-ceiling primary bedroom with plantation shutters and dark walnut furnishings
Family Room Addition
Family Room AdditionFamily room with custom walnut media wall, built-in shelving and tall flanking windows
Great Room Bump-Out
Great Room Bump-OutVaulted living + dining great-room opening to kitchen with black-frame casement windows
Living Room Bump-Out
Living Room Bump-OutTray ceiling, brass chandelier, window-seat bump-out, wall-mounted TV on walnut console
Sitting Room Addition
Sitting Room AdditionCozy addition with curved bay window, masonry fireplace and floating walnut reading shelf
Guest Bedroom Addition
Guest Bedroom AdditionGuest bedroom with black-frame windows over hillside, cube storage and accent seating
Formal Living Addition
Formal Living AdditionBeamed-ceiling addition with limestone fireplace, triple bay window and symmetrical seating

Like What You See?

Tell us about your project — we will get back to you within one business day.
Room Addition — Master in Design portfolio, Tarzana CA