High-Impact Upgrades

Windows & Doors Replacement in Tarzana

Steel pivot entries, multi-slide glass walls and replacement windows across Tarzana and Los Angeles.

Replacement windows and entry-door installations across Tarzana and Los Angeles. Premium window and door systems (steel pivot doors, floor-to-ceiling glass walls, multi-slide patio doors, casement and double-hung replacements), installed with proper flashing, weather-tight integration and clean finish carpentry.

New windows and doors are one of the highest-impact upgrades you can make to a home: curb appeal, daylight, energy efficiency and security all improve at once. See the real-world benefits of energy-efficient windows. We have installed window and door packages on full-home remodels across Tarzana, Encino, Woodland Hills, Hidden Hills, Sherman Oaks and Calabasas.

All installs meet current California Title-24 energy code, are properly flashed and inspected, and finished with matched trim, jamb extensions and stucco patching so the new opening looks designed-in, not bolted on.

At a glance

Cost

$10,000 to $80,000

Whole-home window replacement

Timeline

2 to 5 days

Most whole-home installs; pivot doors 1 to 3 weeks

Permits

Pulled where required

Every install meets Title 24 energy code

License

CSLB #979219

General Building contractor. Verify license at CSLB

What we install

Windows

Replacement and new-construction windows, from energy-efficient retrofits to custom steel-frame statement walls. We handle structural opening enlargement, weatherproofing, finish trim and stucco/siding repair on either side of the opening.

Energy-efficient vinyl, fiberglass and wood-clad replacements
Black-framed steel and aluminum picture windows
Bay, bow and picture-window additions
Title 24 / Energy Star compliant Low-E glazing

What we install

Doors

Entry doors, patio doors and multi-panel sliding systems that transform circulation and indoor-outdoor flow. Each install includes structural framing, weatherproofing and integrated security hardware.

Pivot and custom-millwork front entries
Multi-panel folding glass walls (4–8 panels)
Pocketing and bypass sliding systems
French and Dutch doors in wood, fiberglass or steel

Our process

Most whole-home window replacements are installed in 2 to 5 days once materials arrive. Steel pivot doors and floor-to-ceiling glass walls need framing work and run 1 to 3 weeks. Custom steel and oversized glass systems add 8–12 weeks of fabrication lead time. We handle structural permits for opening-size changes and exterior finish restoration.

Recent installs

Windows & Doors

A cross-section of recent window replacements, custom entries and patio-door systems.

Indoor-Outdoor SlidersMultiple sliding glass door systems open living spaces to poolside patio and pergola

Black-Frame Patio DoorsBlack steel-look sliding patio doors with divided glazing connect dining room to pergola

Black-Frame Deck SlidersBlack steel-frame sliding glass doors open rear elevation to composite deck and garden

Whole-Home Window PackageBlack-framed double-hung windows with plantation shutters and arched dormer on craftsman facade

Arched Steel EntryPair of arched steel-frame grid windows flank stone entryway with carved wood door

Breakfast Nook WindowsWhite-frame casement windows wrap banquette dining nook with French glass garden door

Modern Farmhouse WindowsBlack picture windows and round porthole accents on two-story modern farmhouse facade

Bedroom Bay WindowsThree black grid-frame windows form bedroom bay with rooftop and hillside views

Free estimate

Replacing windows or doors? Get a free estimate from our Tarzana team.

Get a Free Estimate (855) 741-3167

What homeowners say

Rated 4.9 out of 5 across 60 Google reviews, with 42 more on Yelp.

★★★★★
“Danny and his crew members were professional’s and respectful. The best part is to be under construction and not feel it.”
Ohad R.
verified Yelp review

★★★★★
“Quality of his work & crew was great. His estimate for work done was competitive and in line with 3 other competitors.”
George H.
verified Yelp review

★★★★★
“I used master in design and I was very happy with the results! The most professional and best customer service”
Hadar Levy
verified Facebook review

Who runs your project

Avi “Danny” Vaknin, owner

Avi Vaknin owns Master in Design, the Tarzana design-build firm serving the San Fernando Valley since 2012. Most clients know him as Danny.

Reviews describe him on site during the build and back at the house when something needs attention, sometimes years after the job is done.

About Master in Design

Windows & Doors FAQs

What Tarzana homeowners ask before replacing windows or installing a new entry door.

What does a window replacement project cost?

Whole-home window replacement typically runs $10,000–$80,000 depending on opening count, glass package, frame material and any structural changes. We measure every opening on-site so the estimate matches the install.

How long does an install take?

Most whole-home window replacements complete in 2–5 days. Steel pivot doors and floor-to-ceiling glass walls add framing and structural time and can run 1–3 weeks depending on the opening.

Do you handle steel pivot doors and oversize glass?

Yes, steel pivot entries, multi-slide and floor-to-ceiling glass walls are some of the most requested upgrades on our Tarzana, Encino and Hidden Hills projects. We coordinate with the manufacturer on lead-time, structural opening prep and finish carpentry.

What about Title-24 / energy code?

All replacements meet current California Title-24 energy code. We pull permits where required and the inspector signs off the final install, so you get the documentation for resale.

Do you do finish carpentry around the new openings?

Always. Casing, jamb extensions, interior trim and stucco patching are part of the scope so the install looks finished, not patched.

Is it worth replacing 20 year old windows?

Yes, it is usually worth replacing 20 year old windows, especially single-pane or aluminum-frame units. After about 20 years, seals fail, glass fogs, and frames let in heat and dust. New dual-pane, Low-E windows cut heat gain during Valley summers and block street noise. If your windows still open easily, seal well and show no fogging, you can often wait a few more years.

What is the best time of year to install windows?

The best time of year to install windows in Southern California is fall through spring, when mild weather lets the house stay open for a few hours without heat pouring in. Sealants and caulk also cure best in mild temperatures. Summer installs work too, since rain is rare here. The bigger factor is lead time, because custom and steel units can take several weeks to arrive.

Should I get double hung or casement windows?

You should get casement windows if you want the tightest seal and the best airflow, and double hung windows if you want a classic look that suits older homes. Casements crank open outward and press against the frame when closed, which helps energy efficiency. Double hung windows slide up and down, fit traditional styles and never swing into walkways or plants. Many homes use both in different rooms.

Is it cheaper to replace all windows at once?

Yes, it is usually cheaper to replace all windows at once, because you pay for one trip, one permit and one round of stucco and trim repair instead of several. Ordering every unit together can also lower the price per window. Phasing the work by side of the house is fine if the budget needs it. Just match the frame color and glass so the house looks consistent.

Recent Work

Built. Finished. Loved.

Recent window and door projects from our Tarzana team. More glass is often part of new kitchen designs that bring in natural light. Frosted glass and exhaust venting come up often in bathroom renovations. Every one of our home additions needs new windows and doors. They are also a core part of top-to-bottom home remodels.

Open-plan whole-home remodel in modern California style by Master in Design, Tarzana CA

Designer Visualizations

Ready to start your project?

Tell us about it. No obligation, no pressure. We respond within one business day.

★★★★★
4.9 out of 5 from 60 Google reviews, plus 42 reviews on Yelp.
Licensed General Building contractor, CSLB #979219. Serving Tarzana and the San Fernando Valley.

Replacement-window scopes in Tarzana include Title 24 energy compliance, U-factor and SHGC documentation, plus finish carpentry and stucco repair, so the install looks built-in, not bolted-on.