The Roofing Book

Permitting Authorities / Missouri / City of Lake Saint Louis - Community Development (Building Division)

Do you need a permit to replace a roof in Lake Saint Louis, MO?

Adopted code

City of Lake Saint Louis - Community Development (Building Division)

The Building Division of the City of Lake Saint Louis Department of Community Development issues building permits and conducts inspections for the city, from the Civic Center at 200 Civic Center Drive. The city enforces the 2021 International Residential Code with local modifications for permits issued after March 1, 2024. This listing covers residential building permits inside the City of Lake Saint Louis.

Roof code checklist: Lake Saint Louis, MO

ItemAnswerCode citeSourceVerified
Permit to replace a roofNot published
Repair permit thresholdPublishedlakesaintlouis.com2026-10-17
Layer limit / roof-overNot published
Deck & sheathingNot published
Drip edgeYesR905.2.8.5lakesaintlouis.com2026-10-17
Ice & water shieldNolakesaintlouis.com2026-10-17
Mid-roof inspectionNot published
Impact-resistant (Class 4) roofingNot published
Wind design criteriaNot published
Adopted codePublishedlakesaintlouis.com2026-10-17
Contractor license / registrationYeslakesaintlouis.com2026-10-17
Sales & use taxPublisheddor.mo.gov2026-10-17

Each row comes from the sourced record on this page; full wording is in the table below. "Not published" means no official source for that item was found when the record was last verified.

Jurisdiction
City of Lake Saint Louis, Missouri
Jurisdiction type
city
Address
200 Civic Center Drive, Lake Saint Louis, MO 63367
Contact
  • url: https://www.lakesaintlouis.com/156/Building-Division
  • phone: 636-625-1200
Permit portal
Permit portal
Contractor registration required
Required
Permit process note
The Building Division page says "Permits are required for the construction of new residential and commercial buildings as well as any addition or modification to an existing structure which creates new habitable or occupiable space," and applications and inspection requests go through the City's online portal. The page does not state whether a roof replacement requires a permit.
Adopted code
The city's 2021 Construction Codes page lists the "2021 International Residential Code" among its current codes and states that "The requirements of the current codes will be enforced for construction associated with construction permits issued after March 1, 2024." The page adds that "A copy of each code book and the adopting Ordinance, with local modifications, are available for inspection at the City Clerk's office in the Lake Saint Louis Civic Center." The adopting ordinance and its full amendment list were not read. The city's Asphalt Shingle Roof Requirements sheet shows two local changes in Chapter 9, Roof Assemblies: item 3 of Section R905.2.8.2 (closed valley linings) is "replaced by amendment", and an exception is "added by amendment" to Section R905.2.8.5 (drip edge).
Drip edge
Required — The city's Asphalt Shingle Roof Requirements sheet gives Section R905.2.8.5: "A drip edge shall be provided at eaves (horizontal) and rake edges (angled) of shingle roofs." Segments overlap at least 2 inches, extend at least 1/4 inch below the sheathing and 2 inches back onto the deck, and are fastened at no more than 12 inches on center. A local exception allows "An alternative design approved as provided for in R104.11". The Building Division's published answers state "Yes, drip edge is required." About drip edge
Ice & water shield
Not required — The city's Asphalt Shingle Roof Requirements sheet states "Ice/water shield - Not required", and the Building Division's published answers state "Ice and water shield is not required unless required by the manufacturer." About ice & water barrier
Repair permit threshold
The Building Division's published answers state: "A permit is not required for a roof replacement."
Sales & use tax
7.9500% SALES TAX AND 7.9500% USE TAX FOR LAKE SAINT LOUIS, ST. CHARLES COUNTY (Missouri Department of Revenue jurisdiction code 40178-183-000, listed as "LAKE ST LOUIS ST CHARLES COUNTY"), per the Department's Sales and Use Tax Rate Tables for October, November, December 2026 (updated 8/25/2026). The same table lists 3 other rows for parts of Lake Saint Louis inside a community improvement, transportation development or other district, in a separately coded part of the city, or in another county, with sales tax rates of 8.7000% to 8.9500%. For a roofer, the Department's Contractors Tax Matrix (effective 10-24-2022) defines a contractor as "Any person entering into an agreement to improve, repair, replace, erect or alter real property," and lists "Purchases of parts, materials, supplies, and chemicals purchased by contractors" as taxable. It says the "Missouri sales or Missouri consumer's use tax must be paid to the vendor or accrued and remitted directly to the Missouri Department of Revenue."

Local roofing hub

Roofing in Lake Saint Louis, MissouriCity hub

More roof permit pages in Missouri

Lee's Summit, MORoof permit Liberty, MORoof permit Marshall, MORoof permit Maryland Heights, MORoof permit Mexico, MORoof permit Roofing in MissouriState hub

Related guides

Hail-Belt Rules by State Denver-Metro Roofing Permits Filing a Hail Insurance Claim Colorado Hail Season Prep Hiring a Contractor

Working an insurance claim in Lake Saint Louis, MO? Everything on this page (drip edge, ice & water shield, inspections, Class 4 rules) formatted as a claim-ready evidence pack: verbatim ordinance quotes, code section cites, verification dates, and official source links, ready to attach to a supplement. See a real sample pack (PDF, 4 pages, free).

Code items like drip edge and ice & water shield are what adjusters ask you to document.

Buy this jurisdiction's pack: $12 Delivered by email within minutes. Digital download: all sales are final once delivered, except for a failed delivery, a defective file, a duplicate purchase, or a pack materially different from its description. See Section 6 of our Terms of Use.

Questions about the Lake Saint Louis, MO pack?

Not ready to buy, or need a different jurisdiction? Tell us and we’ll reply directly.

By submitting, you agree to our Terms of Use and Privacy Policy.

Sources

Roofing questions: Lake Saint Louis, MO

When does a roof repair need a permit in Lake Saint Louis, MO?

The Building Division's published answers state: "A permit is not required for a roof replacement."

Is ice & water shield required in Lake Saint Louis, MO?

No. The city's Asphalt Shingle Roof Requirements sheet states "Ice/water shield - Not required", and the Building Division's published answers state "Ice and water shield is not required unless required by the manufacturer."

Is drip edge required in Lake Saint Louis, MO?

Yes. The city's Asphalt Shingle Roof Requirements sheet gives Section R905.2.8.5: "A drip edge shall be provided at eaves (horizontal) and rake edges (angled) of shingle roofs." Segments overlap at least 2 inches, extend at least 1/4 inch below the sheathing and 2 inches back onto the deck, and are fastened at no more than 12 inches on center. A local exception allows "An alternative design approved as provided for in R104.11". The Building Division's published answers state "Yes, drip edge is required."

Do roofing contractors need a license or registration in Lake Saint Louis, MO?

Yes.

What building code does Lake Saint Louis, MO use?

The city's 2021 Construction Codes page lists the "2021 International Residential Code" among its current codes and states that "The requirements of the current codes will be enforced for construction associated with construction permits issued after March 1, 2024." The page adds that "A copy of each code book and the adopting Ordinance, with local modifications, are available for inspection at the City Clerk's office in the Lake Saint Louis Civic Center." The adopting ordinance and its full amendment list were not read. The city's Asphalt Shingle Roof Requirements sheet shows two local changes in Chapter 9, Roof Assemblies: item 3 of Section R905.2.8.2 (closed valley linings) is "replaced by amendment", and an exception is "added by amendment" to Section R905.2.8.5 (drip edge).