Replacement Windows and Doors in Hanahan, SC

Do you need a permit to replace windows or doors in Hanahan?

Plan on one. Inside the city limits, the Building and Codes Department at City Hall, 1255 Yeamans Hall Road, handles permit questions, plan review and inspection requests. Besides requiring permits for building “construction, reconstruction, alteration and repairs,” the City publishes a sheet of work exempt from permits, and windows and doors are not on it. Your installer confirms the permit path with the office that covers your parcel before work starts.

For this exact job the City publishes a “2009 IECC Compliance Sheet” for the “Replacement of Residential Windows and Doors,” revised in March 2023. Its note reads, “Please have window/door stickers or factory affidavit on site for inspection for compliance with U-Factor and SHGC where applicable.” So leave the stickers on the new units, or keep the affidavit on hand, until the inspection.

The City’s permit application asks for the class of work, with “Alteration” and “Repair” among the choices, and under the code, replacing a whole window unit, frame and glass, is an alteration held to current wind-resistance standards for the site.

On an unincorporated Berkeley County parcel, the County’s Permitting Department, at 1003 Highway 52 in Moncks Corner, issues the permit. The County’s residential requirements sheet groups “Windows/Exterior Doors/Roofing” under one heading, asking for a construction application, the cost of construction and a scope of work, and its application offers a “Windows Only” permit type.

Do replacement windows and doors in Hanahan need impact-rated glass?

Inside the wind-borne debris region, yes, or standard glass behind tested protection. The region is set by the design wind speed at the address, not by the city line, and the building official confirms it for a parcel, so settle it with your installer before ordering.

The State’s Building Codes Council approved county wind maps that are “intended to be the primary source for defining the appropriate boundaries for wind and seismic design in South Carolina for single- and two-family dwellings,” and it leaves finer boundary questions to the local building official.

Inside the region, each glazed opening you replace, door glass included, must be impact-resistant or protected: an impact-rated unit tested to ASTM E1886 and E1996, a standard unit behind a tested, permanently anchored shutter system, or a narrow, engineered wood-panel option that improvised plywood does not meet. The duty attaches to the units you replace, not to the whole house. Where shutters suit the house better, see hurricane shutters for Hanahan homes; for whole-house systems, see storm protection in Hanahan.

Who reviews window and door changes in Hanahan’s Town Center and HOAs?

Two kinds of body can, and neither reaches every house: the City’s Design Control Committee, within the Town Center District, and an association’s review board, within its own community. No one can promise either decision; a complete application is the part an owner controls.

The Committee is “a five member board that has been established to protect and promote the appearance, character, and economic value of the built environment within the Town Center District,” and it reviews applications for “major alterations and/or additions to existing developments”. Its page does not name replacement windows or doors, so for a property in that district, ask the City whether the job goes to the Committee before you order.

Eagle Landing, a 279-home community just off Rivers Avenue, is one association with a published rule: its manager’s page tells owners, “For any changes/modifications to the exterior of your home you will need to submit an ARB application”. Wherever an association has a review board, get its current guidelines before choosing a frame color, grid pattern or door style.

What are Hanahan’s houses like, and what does that change?

Mostly owner-occupied, and about half built by 1986: the Census Bureau’s 2020–2024 American Community Survey estimates 8,671 housing units in the City, a median year built of 1986, and 68.1 percent of occupied homes lived in by their owners. Those figures cover the incorporated City only, not the county addresses that share its postal name.

The first neighborhoods are older still: the City’s history credits George S. Fishburne with starting Highland Park near US 52 in 1940, says Yeamans Park was completed a year later, and describes Port Park as “formerly military housing for the nearby navy base”. Otranto, “developed on former plantation lands,” was annexed in 1976.

In a house from the 1980s or earlier, the frames set the method. A sound, square frame can take an insert, which keeps the trim but cannot reach rot hidden in the old frame; rot or failed flashing calls for a full-frame replacement, stripped to the studs so the opening can be repaired and flashed to the weather barrier. If the house was built before 1978, federal rules require certified lead-safe practices for window work, because it disturbs painted surfaces; confirm your installer complies. Not sure the windows are done? See the signs a Hanahan window is due for replacement; for the frame itself, see frame materials for a Hanahan home.

How does Muhler handle a Hanahan window and door replacement?

Muhler’s in-home estimate is free, and a reliable quote starts with measuring each opening and checking the frames for rot and square. Before anything is ordered, settle which office covers the parcel, who files the permit and who books the inspections.

Inside the debris region, settle impact-rated glass or tested protection for each opening before the order goes in. Custom-size units are built to your measurements and lead times vary by product and specification. On a county parcel, Berkeley County’s inspection list calls for a window inspection after the windows are installed and says, “Do not cover fasteners until after inspection”. Frames and glass are compared in depth on our replacement windows and doors page.

Muhler makes its own doors and also installs other manufacturers’ entry, French and patio doors. The City’s compliance sheet covers windows and doors alike. Inside the debris region, a door’s glass needs impact rating or tested protection, while a solid door is rated for wind load instead. On a county parcel, where the requirements sheet lists exterior doors beside windows, confirm with the County which permit type a door-only job takes. For jambs, sill pans and impact-rated assemblies, see exterior doors for Hanahan homes.

For the storm-season checklist, see hurricane-season readiness for a Hanahan home; if a porch is next, see sunrooms in Hanahan.

Frequently asked questions

Is my address inside the City, and why does it matter?

It decides whose permit and flood rules apply. The incorporated City sits at “the very south end of Berkeley County,” and a mailing address with its name can also belong to unincorporated Berkeley County, whose permit system warns when an address “is not in our jurisdiction to permit”. The parcel, not the postal name, decides, so your installer confirms it first.

What do the window and door stickers the City checks measure?

Energy performance: the U-factor measures heat moving through the unit, the SHGC the solar heat it admits. The City’s sheet is written to the 2009 IECC, still South Carolina’s energy code by statute and a floor modern ENERGY STAR-level windows clear easily. For windows, ENERGY STAR’s South-Central spec, the zone it assigns to Berkeley County, asks for a U-factor of 0.28 or lower and an SHGC of 0.23 or lower.

Does the City’s flood ordinance matter for a window job?

In a Special Flood Hazard Area, it can. There, the City’s ordinance requires structures to be built with the lowest floor “no lower than the base flood elevation plus two (2) feet”. Work costing half the structure’s market value or more is generally a substantial improvement, which can bring the whole building under current flood rules; ask the Building and Codes Department, the City’s flood contact, how a project counts.

Does the City of Charleston’s no-vinyl window policy apply in Hanahan?

No. That policy, adopted by the City of Charleston’s Board of Architectural Review in December 2025 and reading “No vinyl or vinyl components,” covers that city’s Old and Historic District. Here, look instead to the City’s Design Control Committee, within the Town Center District, and to your association: Eagle Landing’s manager, for one, says exterior changes need an ARB application.

Do you work in Highland Park, Otranto and Tanner Plantation?

Yes. Muhler serves the City and the Berkeley County addresses around it, including Highland Park, Yeamans Park, Port Park and Otranto, which the City’s history names, and Tanner Plantation and Bowen Village, which its Town Center Master Plan page counts among its “development and redevelopment successes”. The in-home estimate is free, and the showroom is at 1930 Hanahan Road, Suite 500, in North Charleston.