Accessory dwelling unit permit cost

Looking for accessory dwelling unit permit cost in McKinney, TX? Call AccessoryDwellingUnit Pros for a contact a provider — no obligation. Licensed adu builders serve McKinney and the surrounding area, and you'll get straight answers on timing and what affects the price.

Last updated: September 24, 2026

What affects the price

Building an ADU is a custom project, so costs vary based on your specific choices. Site conditions are the biggest factor; if your land requires significant grading, utility extensions, or foundation work, those expenses add up quickly. Choosing high-end finishes, custom cabinetry, or complex roof lines will also push the budget higher compared to a standard design. Prefabricated units often offer predictable costs, while custom site-built structures allow for more flexibility but can be harder to estimate upfront. Exact pricing confirmed free on the call.

About this service

Permit fees are paid to your local municipality and fluctuate based on the specific city or county where your property is located. These costs cover plan reviews, impact fees, and safety inspections required to make your new space legal and compliant. Because every jurisdiction has a different fee structure, the final amount depends on your specific town’s regulations. We help you estimate these during the planning phase. Exact pricing confirmed free on the call.

Frequently asked in McKinney

What are the disadvantages of ADUs?

How much does an ADU cost in Massachusetts?

We provide service for projects in Texas, specifically focusing on the McKinney area. We do not have information regarding construction costs or building codes in Massachusetts. If you are planning an accessory dwelling unit in McKinney, please contact us for local pricing factors. We look forward to helping with your nearby project.

What are the rules for ADUs in California?

Is ADU allowed in Maryland?

What are the rules for ADU in California?

Rules for accessory dwelling units in California differ significantly from the regulations found in McKinney. Your McKinney property is governed by local city ordinances rather than California state statutes. We stay updated on all local building requirements to ensure your project complies with McKinney standards. Let us help you navigate your local permit process.

Also serving nearby: Allen · Frisco · Plano · Richardson · Carrollton

All cities in Texas →

More on this: HUD ADU resources — ADU policy and financing research.

Service area details

213,509residents

3,188per sq mile

4ZIP codes served

Serving all of McKinney — population 213,509; about 3,188 residents per square mile across 67.0 sq mi. ZIP codes covered include 75069, 75070, 75071, 75072.

Neighborhoods served in McKinney: Stonebridge Ranch, Craig Ranch, Adriatica, Eldorado Heights, Tucker Hill — and every surrounding area.