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Basement and Egress Window Replacement

Serving the Tulsa, Oklahoma metro. Two completely different jobs share this name. Swapping a small below-grade window is among the cheapest work in the trade. Cutting a new egress opening into a foundation wall is permitted construction. Know which one you are asking for before anyone quotes it.

Or call (918) 417-1098

The two jobs, and what they cost

Replacing an existing basement window with a new unit of the same size runs roughly $350 to $900 installed. Cutting a new code-compliant egress window into a foundation wall, with a window well and drainage, runs roughly $2,500 to $5,500 and needs a permit. The first is a window job. The second is excavation, concrete cutting, structural work and drainage that happens to end with a window in it. Almost every surprise on a basement estimate comes from a homeowner asking for the first and needing the second.

Basements in the Tulsa metro

Worth saying plainly, because national advice about basement windows assumes a Midwest or Northeast house: most homes here do not have one. Oklahoma's expansive clay soils and shallow frost depth make full basements expensive to build and prone to moisture problems, so the region built slab-on-grade and crawlspace instead. Storm shelters, which are a different thing entirely and have no windows, took the place basements occupy further north.

Where basements do exist locally, they tend to be in older housing: pre-war homes in Midtown Tulsa, the older streets of Sand Springs and Sapulpa, and scattered custom builds. Those are the houses with small hopper or awning units set high in a masonry or poured wall, often single-pane steel or aluminum, frequently painted shut, and very often the original 1930s or 1940s unit. Partial basements and daylight basements on sloping lots are the other common case.

That history matters for two reasons. The units are usually non-standard sizes, so a stock window rarely fits and the opening gets built up or cut. And the surrounding masonry has had eighty years of water against it, so what is around the window is often a bigger job than the window.

Egress window installation: what the code requires

The rule that drives most of this work: every sleeping room needs an emergency escape and rescue opening, and in a basement that means a window large enough to climb out of, low enough to reach, and served by a well big enough to stand in if it is below grade.

The model residential code (the International Residential Code, section R310) sets these minimums for an escape window:

  • Net clear opening: at least 5.7 square feet, or 5.0 square feet for an opening at grade or below it, measured with the sash fully open.
  • Clear height and width: at least 24 inches high and 20 inches wide. Both minimums at once do not reach 5.7 square feet, so the window has to be larger than that in at least one direction.
  • Sill height: no more than 44 inches above the finished floor.
  • Window well: at least 9 square feet of floor area, at least 36 inches out from the wall and 36 inches across, with a permanent ladder or steps once the well is deeper than 44 inches.

Those are the model figures. The edition in force and any local amendments vary by jurisdiction, so confirm the current numbers with the building office with authority over your address, which in this metro may be the City of Tulsa, Sand Springs, Sapulpa, Jenks, Bixby or Glenpool, or the county for an unincorporated property. A good installer will know them and will pull the permit.

When this becomes your problem:

  • Finishing a basement into a bedroom. The moment a below-grade room is used for sleeping, it needs compliant egress. This is the single most common trigger, and it is not optional.
  • Selling a house with a finished basement bedroom. Inspectors and appraisers look for it. A room without compliant egress typically cannot be counted as a bedroom, which affects the listing and the valuation.
  • An existing basement bedroom with a small original window. Pre-war units are almost always far below modern egress minimums.

If the room in question is above grade rather than in a basement, the same escape-opening requirement still applies, which is why converting a bedroom's only operable window to fixed glass is a problem. See picture window replacement.

What goes in a below-grade opening

Hopper windows

Hinged at the bottom, tilting inward at the top. The traditional basement unit because it sheds water away from the opening and works in a shallow space. Good ventilation, easy to operate from below, and small enough that a modern insulated version is inexpensive. Not egress-compliant at typical basement sizes.

Sliders

A horizontal slider suits a wide, short opening and needs no swing space inside or out, which matters in a window well. Often the practical choice when an opening is being enlarged but not to full egress size.

Casements for egress

A casement swings fully open and gives the largest clear opening for a given frame size, which is why egress windows are usually casements. When the requirement is a specific clear area, this style gets you there in the smallest hole in the wall, and a smaller hole in a foundation is cheaper and less disruptive.

Glass block

Secure, private, durable, and a common replacement in older Tulsa basements. Note two things: a fixed glass-block panel provides no ventilation unless a vent unit is built in, and it can never satisfy egress. Fine for a utility area or laundry, never for a bedroom.

The part that is not about windows

Below-grade openings fail because of water, not because of glass. Before anything is ordered, three things deserve attention.

  1. The window well and its drainage. A well that has filled with leaves and soil over the years holds water directly against the window. Proper wells have gravel and a drain that ties into the footing drain or daylights downslope. A well cover keeps debris and rain out and is cheap.
  2. Grade and downspouts. Soil should fall away from the foundation, and downspouts should discharge well clear of any window well. In a metro that gets intense spring rain onto clay that sheds rather than absorbs, this is the most common cause of a wet basement window, and it costs almost nothing to correct.
  3. The masonry around the opening. Deteriorated mortar, spalled block or a cracked sill means the new window will be set into something that is still moving. Repair it first. An installer who wants to set a window into failing masonry without addressing it is doing you no favors.

Basement and egress window cost in the Tulsa area

  • Like-for-like hopper or slider replacement: roughly $350 to $900 installed per opening.
  • Glass block panel, standard basement size: roughly $400 to $900, with a vent unit adding to that.
  • Enlarging an existing opening without full egress work: roughly $1,200 to $2,500 depending on wall construction.
  • Full cut-in egress window with well, drainage and permit: roughly $2,500 to $5,500, and higher in a poured concrete wall or where access for equipment is difficult.
  • Window well replacement or a new well and cover on its own: roughly $600 to $2,000.

Concrete block is generally cheaper to cut than poured concrete. Access is the other swing factor: a wall a mini-excavator can reach costs far less to open than one behind a fence, a deck or a mature tree. Full pricing by style sits on the window replacement cost page.

Get the basement openings looked at

How matching works

Window Replacement Near Me is a free referral service, not an installer. We connect Tulsa-area homeowners with an independent, insured window installation company and may receive a fee when you are connected. Prices here are general guidance for this market rather than an offer. Your estimate, contract and warranty come from the installer.

Cut-in egress is a specialty, and not every window company does concrete work. Say on the form or the call whether you need a straight swap or a new egress opening, so the match goes to a company equipped for the job you actually have.

Basement and egress window questions

How much does an egress window cost?

Roughly $2,500 to $5,500 in the Tulsa metro for a full cut-in with a window well, drainage and a permit. Poured concrete walls cost more to cut than block, and difficult access for equipment can add substantially. Replacing an existing basement window with the same size unit is an entirely different job at roughly $350 to $900.

Does my basement bedroom legally need an egress window?

If it is used as a sleeping room, it needs a compliant emergency escape and rescue opening. The specific dimensions and the sill height limit come from the residential code edition your jurisdiction has adopted, and local amendments exist, so confirm the current figures with the building office covering your address before you order anything.

Can glass block be used for a basement bedroom window?

No. A fixed glass-block panel cannot be opened, so it can never satisfy egress. It is a good choice for a laundry, a utility area or a storage room where security and privacy matter and ventilation can come from elsewhere, but not for any room used for sleeping.

Why does water get into my window well?

Almost always drainage rather than the window. Wells fill with leaves and silt, the gravel bed clogs, the drain blocks, or a downspout discharges too close to the foundation. Clearing the well, restoring the drainage and correcting the grade fixes far more wet basement windows than a new unit does, and costs a fraction as much.

Do many houses in the Tulsa area have basements?

Comparatively few. Expansive clay soils and a shallow frost line made full basements expensive and moisture-prone to build here, so most of the metro is slab-on-grade or crawlspace, with storm shelters serving the purpose basements serve further north. Where basements exist, they are mostly in older Midtown Tulsa, Sand Springs and Sapulpa housing, or on sloping lots as daylight basements.

Can I cut an egress window into a poured concrete wall myself?

This is not a do-it-yourself job. It involves cutting a structural wall, which needs the opening engineered and headed correctly, plus excavation, a well, drainage and an inspection. Done wrong it compromises the wall and it will show up on an inspection when you sell. Use a company that does this work regularly and pulls the permit.

Swap or cut-in? Find out before you budget

One matched local installer looks at the wall, the well and the room's use, and tells you which job it is. Free either way.

Or call (918) 417-1098

Window Replacement Near Me is a free referral service, not a window installer. We match homeowners in the Tulsa metro with insured, independent installation companies and may receive a fee when you're connected. Your estimate comes from the installer, not from us.

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Serving the Tulsa metro: Tulsa, Broken Arrow, Owasso, Jenks, Bixby, Sand Springs, Sapulpa, Glenpool and surrounding communities in Tulsa, Creek, Wagoner, Rogers and Osage counties.