How Much Does a Bathroom Remodel Cost in Sullivan's Island, SC?
Plan your Sullivan's Island bathroom around the room size, existing layout and work you want done. Reviewed September 12, 2026; the cited project benchmarks are from 2025. They are not local market averages or a quote for your home.
By Jared McCarley, founder of Southeastern Renovation and the SC-licensed general contractor (CLG.127339). Page updated October 13, 2026; figures checked September 12, 2026.
Quick answer: Plan on about $27,000 to update an existing 5-by-7-foot bathroom and about $83,000 for an upscale job that grows a 35 sq ft bathroom to 100 sq ft inside the house and moves fixtures. Those are the 2025 Cost vs. Value figures for Charleston, SC, checked September 12, 2026: two different scopes, not a low-to-high range, and not Southeastern Renovation quotes. On Sullivan's Island, interior-only work usually skips the Design Review Board, but a window change does not, and DRB-guided finishes add lead time. Compare the source and scope.
For project planning and local service details, see bathroom remodeling in Sullivan's Island. Compare the written scope and allowances before using a published range as your project budget.
What does each bathroom budget level include in Sullivan's Island?
The Remodeling 2025 Cost vs. Value Report — Charleston, SC provides two distinct reference projects.
Existing 5-by-7-foot bath — about $27,000: the midrange project updates a 35-square-foot room with replacement fixtures, a tub and tile surround, vanity counter, medicine cabinet and ceramic flooring. This involves more work than painting and changing a vanity.
Expansion inside the house — about $83,000: the upscale project expands a 35-square-foot bathroom to 100 square feet within the existing house footprint and relocates fixtures. It includes a separate shower and soaking tub, two sinks, upgraded storage and lighting, ventilation, HVAC extension and heated flooring.
These Charleston figures are regional context, not a separate Sullivan's Island price survey. These are not two finish levels for the same room, a minimum-to-maximum range or a 2026 Southeastern Renovation quote. A shower-only conversion, accessibility changes, different room size or addition outside the house needs its own measured scope and estimate.
Project definitions: midrange bathroom and upscale bathroom. © 2025 Zonda Media, a Delaware Corporation. Complete report: costvsvalue.com.
What bathroom scope should you plan for in Sullivan's Island?
These local planning options can differ from the two reference projects above. Decide which features belong in your written estimate:
Cottage-style vanity, subway tile, brass fixtures, updated plumbing to code.
Freestanding tub, frameless shower with weathered teak bench, double vanity, coastal marble.
Historic-appropriate materials with modern waterproofing. DRB-guided finish choices.
Ask about demolition, disposal, waterproofing, fixture supply, plumbing moves, ventilation, permits and concealed repairs. Use the bathroom estimate checklist to compare proposals with the same scope.
What affects bathroom remodel cost in Sullivan's Island?
Who issues the permit for a Sullivan's Island bathroom remodel?
Sullivan's Island is its own town, so the building permit comes from the Town of Sullivan's Island. Anything that changes a window, a door or the roofline visible from the public right-of-way goes to the Design Review Board first, and the board meets monthly.
Interior-only remodels usually skip the Design Review Board. Because home values here sit largely in the land, check the FEMA fifty percent substantial-improvement test early: it uses the value of the structure alone. More detail: Sullivan's Island Design Review Board guide and the FEMA 50 percent rule.
How does Southeastern Renovation price Sullivan's Island bathroom remodels?
Fixed-price and cost-plus contracts are both available depending on scope. On a fixed-price bathroom, changes you request, selections above allowance and concealed conditions are priced in writing before that work proceeds.
Every Sullivan's Island project includes: dedicated project manager, permit filing on your behalf, HOA/DRB submittal if required, daily jobsite cleanup, and a 1-year workmanship warranty.
Ready to price your Sullivan's Island bathroom?
A benchmark sizes the budget; a measured visit sets the price. See what a Southeastern Renovation bathroom includes and how the work runs on our bathroom remodeling service page, and the Sullivan's Island details on bathroom remodeling in Sullivan's Island. Planning the kitchen as well? Compare the Sullivan's Island kitchen remodel cost guide. More on working here: remodeling in Sullivan's Island. Every guide: Charleston and York County cost guides.
Get your Sullivan's Island bathroom remodel estimate Tell us about your project · Review the scope with our teamFrequently asked
How much does a bathroom remodel cost in Sullivan's Island SC? For bathroom budget planning in Sullivan's Island, JLC/Zonda's 2025 Charleston, SC reference projects cost approximately $27,000 to update an existing 5-by-7-foot bathroom, and $83,000 for an upscale project that expands a 35-square-foot bathroom to 100 square feet within the existing house footprint and relocates fixtures. These are two different scopes, not the endpoints of a universal price range. These Charleston figures are regional context, not a separate Sullivan's Island price survey. They are third-party benchmarks, not Southeastern Renovation quotes or minimum charges. A limited refresh, shower-only project, different room size or addition needs its own estimate.
How long does it take? 2–5 weeks door-to-door; 2 weeks for guest baths, 3–4 for a primary suite.
Do I need a permit? Yes for structural, plumbing, electrical or gas work. Sullivan's Island is its own town, so the building permit comes from the Town of Sullivan's Island. Anything that changes a window, a door or the roofline visible from the public right-of-way goes to the Design Review Board first, and the board meets monthly.
Do I need HOA / DRB approval? Depends on your subdivision — we submit the ARC/DRB paperwork before demo starts.
What affects the cost of a bathroom remodel in Sullivan's Island?
Sullivan's Island Design Review Board has strict compatibility standards — anything visible from a street or beach path is reviewed. Interior-only bathroom remodels usually skip DRB but window replacements do not. We attend DRB on your behalf. Bathroom scope also depends on shower size and waterproofing, tile and glass selections, vanity and fixture choices, ventilation, and whether plumbing locations change. Existing subfloor or supply-line repairs should be priced for the room after assessment, with concealed conditions addressed in the written scope.
How long does a bathroom remodel in Sullivan's Island take?
Bathroom remodels in Sullivan's Island typically take 2–5 weeks. A guest/hall bath is 2 weeks; a primary suite is 3–4 weeks; a luxury primary with structural changes runs 5–7 weeks.
Do I need a permit or HOA approval for a bathroom remodel in Sullivan's Island?
Sullivan's Island is its own town, so the building permit comes from the Town of Sullivan's Island. Anything that changes a window, a door or the roofline visible from the public right-of-way goes to the Design Review Board first, and the board meets monthly. Interior-only remodels usually skip the Design Review Board. Because home values here sit largely in the land, check the FEMA fifty percent substantial-improvement test early: it uses the value of the structure alone. Southeastern Renovation files the permit and any HOA or design-review submittal as agreed in the project scope.
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