Loading...
In Glendale, CA, ADU construction typically costs between $250 and $450 per square foot. The final cost will vary significantly based on the size, complexity, and desired finishes of the ADU.
Contractor? Create instant estimates with AI and win more jobs.
Try Now for free!What most Glendale customers get at each price point.
Basic ADU construction, potentially with standard materials and simpler designs.
Mid-range ADU construction, offering a balance of quality materials and design complexity.
Premium ADU construction, including high-end finishes, complex designs, and potentially larger sizes.
Click any value to edit, All fields are fully customisable

$2,063.68
Total Estimate Amount
MAX can make mistakes.
This is a Preliminary Estimate
This estimator provides a starting point based on typical jobs. Actual costs may vary based on site conditions, material availability, permit requirements, and other factors discovered during work. We recommend a site visit before providing final pricing to customers.
This estimate is based on typical job parameters. Review and adjust for your specific situation. Standard market rates for your region, mid-grade materials unless specified, standard business hours labor rates, typical job complexity without major complications, basic cleanup included in labor time.
Job complexity
Simple repairs cost less than full installations or replacements. Multi-step jobs requiring permits or inspections add to the total.
Material quality
Budget, mid-grade, and premium materials can swing the price significantly. Discuss options with your contractor to find the right balance.
Local labor rates
Labor costs vary by region, season, and demand. Urban areas and peak seasons typically have higher rates than rural or off-peak times.
Site conditions
Difficult access, older structures, code upgrades, or unexpected issues discovered during work can increase the final cost.
Every contractor prices differently. Create a free account to set custom labor rates, material markups, and default margins that match your business.
Compare local pros and get free quotes
Common questions about costs and estimates for this service.
For a detached ADU of 600-1,200 square feet in California, the average cost can range from $200,000-$475,000. Costs will vary depending on design, materials, and site conditions.
Contractor rates in California for new residential builds generally average around $300–$450 per square foot, though this can range from $300 - $1200 depending on finishes, structural complexity, and site conditions.
Common mistakes include skipping research and feasibility studies, overlooking ceiling height requirements, not planning for separate entrances/utilities, failing to understand permit requirements, neglecting soundproofing, and choosing the wrong contractor.
The average cost for a 20x20 master suite addition in California ranges between $60,000 to $500,000 and up. This wide range is due to factors like location, choice of materials, and design complexity.
In Glendale, the typical cost for ADU construction ranges from $250–$450 per square foot. The full envelope can vary from $125–$600 per square foot, depending on the tier of construction (Basic, Mid-range, or Premium).