Is it cheaper to replace windows and doors at the same time?

It can reduce labor costs since one crew handles both, though the door and window materials themselves are priced separately based on size and type.

Can one contractor handle both windows and sliding doors?

Many window replacement companies also install sliding glass and patio doors, but it's worth confirming they regularly do both types of work before hiring.

Do I need separate permits for windows and a sliding door replacement?

Requirements vary by town, but like-for-like replacements often don't need a permit, while resizing an opening usually does.

How long does a whole-house windows and doors project take?

Timing depends on the number of openings, but a full-house project combining windows and a door is often completed in a few days to about a week.

Whole-house windows and doors replacement package

Homeowners doing a full exterior upgrade often want the windows and the sliding glass or patio door replaced together instead of as two separate projects. Running it as one job means one crew, one schedule, and finishes and trim that match across the whole house.

This kind of project usually comes up during a larger renovation, when siding or trim is also being redone, or when older single-pane windows and a drafty slider are both due for replacement at the same time. Pairing them lets a contractor plan the work in one pass rather than scheduling two separate crews weeks apart.

Full-house window replacement paired with a new sliding or patio door
One crew handling both scopes to keep trim and caulking consistent
Coordinated scheduling so the house isn't opened up twice
Often tied to a broader energy-efficiency or renovation project

Not every company that installs windows also installs sliding doors well, so it's worth confirming a contractor regularly does both before combining the work.

What it costs

Cost depends on the total number of window openings, the size and type of the sliding door unit, and whether trim, siding repair, or interior finish work is part of the scope. Bundling the two jobs with one contractor can reduce overall labor mobilization costs compared to hiring separately, though materials for the door itself are typically priced on their own.

Top 3 by our score

Ranked from our published scoring of public Google reviews for replacement window installation.

1. Best Glass LLC
5.0★ · 183 reviews

93
2. Your Glazier Experts
5.0★ · 134 reviews

92
3. Renewal by Andersen
4.8★ · 1070 reviews

91

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FAQ

Is it cheaper to replace windows and doors at the same time?: It can reduce labor costs since one crew handles both, though the door and window materials themselves are priced separately based on size and type.
Can one contractor handle both windows and sliding doors?: Many window replacement companies also install sliding glass and patio doors, but it's worth confirming they regularly do both types of work before hiring.
Do I need separate permits for windows and a sliding door replacement?: Requirements vary by town, but like-for-like replacements often don't need a permit, while resizing an opening usually does.
How long does a whole-house windows and doors project take?: Timing depends on the number of openings, but a full-house project combining windows and a door is often completed in a few days to about a week.

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