A Penhallow company - serving San Diego, CA
A new rear addition with a vaulted beamed ceiling and tall windows

Mighty Buildings Windows & Doors Nationwide

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A second-story addition that matches the existing roofline
A wide opening with a new beam where the kitchen wall was removed
A stone counter, tile backsplash and open shelf after a kitchen remodel
A remodeled hall bathroom with subway tile and a floating vanity
A remodeled primary suite with built-in wardrobes and a window seat
New painted shaker cabinets with an organized deep drawer
A remodeled hall bathroom with patterned floor tile and painted walls
A remodeled staircase with wood treads and a slim metal railing
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Mighty Buildings Windows & Doors: The San Diego Owner’s Guide

If you own a Mighty Buildings home in San Diego and a window or door has failed, we can source a compatible replacement and handle the full install. Installed costs for a Mighty Buildings-compatible window or door swap in San Diego typically run $5,310 – $17,700 depending on size, glazing, and whether the frame needs reframing. Most owners call us after noticing a draft, condensation between panes, or a door that no longer latches cleanly against the California weather.

Call (619) 604-9624

We’re an independent San Diego contractor, not affiliated with Mighty Buildings. What that means for you is straight parts sourcing and a written price before we touch a thing. Trevor Nash has spent the better part of two decades running remodeling crews across San Diego, and he’ll tell you: “Tell me what you need, I’ll tell you what it costs, and we’ll go from there.”

Which Mighty Buildings Models This Applies To

A garage converted into a guest room and home office

Mighty Buildings builds panelized homes using a proprietary light stone composite for walls, which means window and door rough openings are cut to factory tolerances and sealed differently than a stick-built home. The openings are precise, often narrower than standard framing, and the wall material doesn’t flex the way wood does. That’s the first compatibility gotcha: you can’t just grab a big-box window off the shelf and shim it into place the way you would on a conventional San Diego tract home.

The second gotcha is the flashing integration. Mighty Buildings panels are sealed at the factory, and a replacement window or door has to tie back into that existing water-resistive barrier correctly. If it doesn’t, San Diego’s marine layer mornings in Point Loma and Ocean Beach will find the gap eventually. We measure each opening on site, confirm the rough opening dimensions against the Mighty Buildings spec sheet for your model, and source either an OEM unit or a quality aftermarket equivalent that matches the glazing, U-factor, and frame profile. On the doors side, we check the swing, the threshold height, and how the jamb anchors to the composite panel so the replacement seats as close to factory spec as possible.

We also stock compatible parts for KraftMaid cabinetry, Cambria and Silestone countertops, if the window or door work turns up adjacent trim or interior finish issues.

Explore

Styles & brands we work with

Kitchen remodeling
Kitchen remodeling
Bathroom remodeling
Bathroom remodeling
Home additions & ADU
Home additions & ADU
Roofing
Roofing
Windows & doors
Windows & doors
Driveway & pavers
Driveway & pavers
Fence
Fence

Signs Your Mighty Buildings Windows & Doors Is Failing

  • Condensation between the glass panes. This is the most common failure we see in San Diego, especially in coastal neighborhoods like Coronado and La Jolla where salt air works on the seals. Once the insulating gas escapes and moisture gets inside the glazing unit, the glass is no longer doing its thermal job and the only real fix is replacement.
  • Drafts you can feel with the back of your hand. A failing weatherstrip or a warped sash lets air move around the perimeter. In San Diego’s inland valleys like El Cajon or Santee, that means hot air leaking in during summer and cool air escaping during the rare cold snap. It also means dust, which is a constant here.
  • The door sticks, drags, or won’t latch. Composite wall panels don’t settle the way a wood-framed house does, so when a Mighty Buildings door suddenly starts dragging, it’s usually the hinges, the slab, or the threshold wearing out, not the house shifting. Ignoring it wears the hardware faster and often damages the jamb.
  • Visible cracking or clouding in the frame. Sun exposure in San Diego is relentless, and lower-cost aftermarket frames that looked fine elsewhere can degrade faster here. We’ve seen window frames installed by other contractors turn chalky and brittle within five years in full-sun exposures in Mission Valley.
  • Increased road noise or neighbor noise. If you can suddenly hear more of the 5 or the 805 than you used to, the window’s acoustic seal has likely failed. It’s a symptom homeowners in neighborhoods near freeways in San Diego notice first, even before a draft shows up.
Before & after

See the difference

Before - Recent ProjectBeforeAfter - Recent ProjectAfter
Recent Project
Before - Full RestorationBeforeAfter - Full RestorationAfter
Full Restoration
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Complete Upgrade

Replacement Cost & What’s Included

A finished backyard cottage with a small covered porch

For Mighty Buildings window replacement in San Diego, plan on $5,310 – $17,700 installed depending on window size, number of units, glazing type, and whether reframing is required. A single standard slider is on the lower end; a large picture window or a multi-panel door assembly lands higher. Window replacement jobs average $531 to $1,770 per window for standard sizes without structural work, and impact-rated glass in coastal San Diego can push toward the top of the range.

For a full door replacement on a Mighty Buildings home, the installed range typically falls within that same $5,310 – $17,700 window when you factor in the slab, frame work, hardware, and sealing. Every quote we write is line-item: parts, labor, haul-away, and any remediation to the composite opening. No change orders once we start unless we find something genuinely hidden behind the old unit. And the work carries our 365-Day Done Right Promise: if it fails inside the guarantee period, we come back and fix it at no charge, in writing.

DIY or Call Us?

What you can safely do yourself: check for loose hardware, clean the tracks, replace a worn weatherstrip, and note where the draft is coming from. Those are diagnosis steps, not repairs, and they’ll help us quote the job faster.

What you shouldn’t do is pull a Mighty Buildings window or door out of a composite panel wall on a Saturday. The units are heavy, the factory sealing matters, and getting a replacement to fit correctly without damaging the surrounding panel requires the right measurements and the right flashing details. A dropped window unit can break glass, but it can also crack the composite opening, and that turns a $800 swap into real repair work. Call us at (619) 604-9624, tell us what the window or door is doing, and we’ll schedule a free estimate with a written price.

FAQs

A single-story rear room addition with tall windows and a new patio

Getting started with Penhallow in San Diego

Every project starts with a conversation and a written price. Here is how to take the first step.

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Your San Diego team

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