How much does adu construction cost in Myrtle Beach, SC?

Most Myrtle Beach homeowners spend between $144,000 – $288,000 on adu construction, with an average around $216,000. Local labor prices 4% below the national average, so Myrtle Beach quotes tend to land at the lower end of national ranges.

Why is adu construction more or less expensive in Myrtle Beach than elsewhere?

Licensed trade labor in Myrtle Beach runs about 96% of the national average, and the best crews book out fastest in spring and early summer. South Carolina weather drives material choices here, so ask contractors what they install most often in Myrtle Beach and why.

Do I need a permit for adu construction in Myrtle Beach, South Carolina?

Most Myrtle Beach, SC projects that change structure, electrical, plumbing or mechanical systems need a permit from the local building department; cosmetic work usually does not. Always confirm current requirements with the local building department before signing a contract, and make sure the permit is pulled by your licensed contractor.

How many quotes should I get in Myrtle Beach?

Get at least three written quotes from licensed, insured South Carolina contractors. Comparing line items — not just the bottom line — is the fastest way to spot an inflated bid in the Myrtle Beach metro market.

How much does adu construction cost in 2026?

Most homeowners pay between $150,000 and $300,000, with a national average near $225,000. Small, simple jobs land at the low end; large or premium-material jobs run well above the high end.

What is the cost per square foot?

Installed pricing usually runs $250.00 to $500.00 per square foot, including labor and materials. Expensive metros can run 15–45% higher than that range.

What drives the price up the most?

Scope and access. Larger quantities lower your per-square foot price, but difficult access, demolition of existing work, structural repairs found mid-job, premium materials and rush scheduling each add 8–30%.

Permits are typically required when the work changes structure or ties into electrical, plumbing, gas or mechanical systems. Budget $75–$600 in most cities and confirm whether your contractor pulls it — unpermitted work can block a future home sale.

How long does the job take?

Most residential projects of this type finish in one to five working days once materials are on site. Custom orders, inspections and weather are the usual causes of delay.

How many quotes should I get?

Three. Bids on the same scope commonly vary 20–40%, and the middle bid with the strongest warranty and references is usually the best value — the cheapest bid often excludes prep, disposal or permits.

Home/Cost guides/ADU Construction/Myrtle Beach, SC

Myrtle Beach metro · South Carolina

ADU Construction cost in Myrtle Beach, SC

Myrtle Beach homeowners typically pay $144,000 – $288,000 for adu construction. Local labor and materials price 4% below the national average.

Get my Myrtle Beach estimate Use the Myrtle Beach calculator

Myrtle Beach average

$216,000

Typical low

$144,000

Typical high

$288,000

Per square foot

$240 – $480

Sample ZIP

What drives Myrtle Beach pricing

Local labor

Licensed trade labor in Myrtle Beach runs about 96% of the national average, and the best crews book out fastest in spring and early summer.

Permits & code

Most Myrtle Beach, SC projects that change structure, electrical, plumbing or mechanical systems need a permit from the local building department; cosmetic work usually does not.

Climate & conditions

South Carolina weather drives material choices here, so ask contractors what they install most often in Myrtle Beach and why.

Instant cost calculator

Adjust the inputs to see live pricing

ADU size (sq ft)600 square feet

Quality / material level

Site access

Removal / prep work

Timing

Estimated project cost

$128,250 – $173,850

Most homeowners pay around $151,050

Compare quality / material level

Cost by material in Myrtle Beach

Installed Myrtle Beach pricing per square foot.

Option	Installed cost	Pros	Cons
Prefab studio ADU	$225 – $305	—	—
Site-built 1-bedroom	$305 – $405	—	—
Site-built 2-bedroom	$405 – $520	—	—
Custom high-end ADU	$520 – $720	—	—

Where the money goes in Myrtle Beach

A typical $216,000 Myrtle Beach project, broken down by line item.

Labor0.45% · $972
Materials0.38% · $821
Permits & inspections0.05% · $108
Overhead & profit0.12% · $259

Common add-ons

Extras that show up on Myrtle Beach quotes but rarely in the headline price.

Utility connections

$7,700 – $28,800

Site work and foundation

$14,400 – $57,600

Design and permits

$7,700 – $28,800

Impact fees

$1,900 – $19,200

Ways to save in Myrtle Beach

Use pre-approved ADU plans where your city offers them — saves months and design fees.
Detach only if required; attached and conversion ADUs cost far less.
Collect three written bids on an identical scope — spreads of 20–40% are normal.
Book in the off-season and stay flexible on the start date to save 5–15%.
Bundle nearby work into one mobilization so you only pay setup and travel once.
Ask what the contractor would change to cut 10% without hurting durability.

Myrtle Beach FAQs

Get a Myrtle Beach price you can budget against

Answer a few questions about your project and we'll model a low, average and premium price for your SC ZIP code — then connect you with vetted local pros.

Get free quotes from certified pros

More Myrtle Beach research

Best adu construction companies in Myrtle Beach ADU Construction permits in South Carolina ADU Construction near me All South Carolina prices

More South Carolina cities

Charleston Columbia Greenville Rock Hill

Other project costs in Myrtle Beach

Fence Installation in Myrtle Beach

$1,440 – $3,840

Roof Replacement in Myrtle Beach

$8,160 – $32,640

Kitchen Remodel in Myrtle Beach

$17,280 – $91,200

HVAC Replacement in Myrtle Beach

$5,280 – $17,280

Deck Building in Myrtle Beach

$4,224 – $11,520

Window Replacement in Myrtle Beach

$432 – $1,440

See every Myrtle Beach cost guide