ADU Quotes

Why ADU quotes can look cheaper than they really are

A cheap ADU quote can feel like a win. But it may only be cheap because some work is missing.

Two ADU quotes can show very different prices. That does not always mean one builder is cheaper.

It may mean one builder included more work.

Costs that are often missing

  • Design and drawings.
  • Structural engineering.
  • Title 24 energy work.
  • Permit and city fees.
  • Utility upgrades.
  • Finish materials.
  • Appliances.
  • Landscaping, fences, and paving.

Design may not be included

Some quotes start after the plans are done. That means drawings, engineering, and energy forms may be separate.

Ask this: “Does this price include the plans I need for the city?”

Permit fees may be separate

City fees can be pass-through costs. That means you pay them, even if they are not in the builder price.

Ask for this answer in writing.

Utility work can change the price

Your ADU may need new utility lines. It may also need a bigger electrical panel.

This is why you should read the utility section with care. Use this guide next: ADU utility costs.

Finish items may only be a budget

A quote may show a small budget for tile, cabinets, counters, and fixtures. If your choices cost more, the price goes up.

Learn more here: ADU allowances explained.

The total price is not enough

Do not compare only the total price. Compare the scope. Scope means the work the builder has promised to do.

A clear quote protects you. A vague quote can lead to change orders.

Frequently asked questions

Why is one ADU quote much lower than another?
The lower quote may include less work. Check for missing design fees, permit fees, utility work, site work, finish items, and landscaping.
Are low ADU quotes always bad?
No. But you need to know what is included. A low quote can be fine if the scope is clear.
What missing cost surprises homeowners most?
Utility work often surprises homeowners. Long trenches, sewer work, and electrical panel upgrades can add real cost.

Not sure what is missing?

Send the quote line items. I can help you check the scope before you choose a builder.

Send your ADU details