The ADU Goldmine: How One Extra Unit Can Change Your Financial Picture
The premise is simple: you have land, and land can hold more than one unit. An accessory dwelling unit — a second, self-contained home on the same parcel — is one of the most financially efficient moves available to property owners in Utah right now. Here's why the numbers work, and what you actually need to make it happen.
The property value case
Studies consistently show that adding an ADU can increase a property's value by up to 30%. In Utah's current market, where the average home price sits around $530,000, that's a potential equity gain in the range of $150,000–$160,000 — from a single improvement. That's not speculation; it reflects the market's recognition that an income-producing second unit on a parcel has real, measurable value to future buyers.
Put differently: the ADU doesn't just generate rent while you hold the property. It also increases what the property is worth when you eventually sell.
The income case
Utah's average monthly rent runs approximately $1,795 statewide, and in high-demand Utah County cities — Provo, Spanish Fork, Salem, Springville — rental demand is consistently strong. A well-placed ADU on your parcel realistically generates $1,000–$1,500/month depending on size and location.
$1,250 Average monthly rent in Utah
30% Potential property value increase from an ADU
$75K+ Potential rental income over 5 years
Three ways people use ADUs on their property
Long-term rental income. The most common use case — place a modular ADU, rent it to a tenant, and collect monthly income. Straightforward, predictable, and immediately accretive to the property's cash flow.
Multi-generational living. Adult children, aging parents, or in-laws who want proximity without sharing a front door. A modular ADU solves the space problem cleanly, private entrance, separate utilities, same parcel.
Short-term rental in high-demand areas. Properties near Utah's national parks, ski resorts, and outdoor recreation areas can command significant nightly rates as short-term rentals. A well-finished modular ADU in the right location can substantially outperform long-term rental income on a per-night basis.
Why modular makes the ADU math better
A stick-built ADU addition can take 12–18 months to complete and involves significant construction risk — weather delays, contractor scheduling, material cost overruns. A modular ADU from Summit is delivered and set in under 90 days, with a fixed cost known upfront. That faster timeline means earlier rental income, lower carrying cost during construction, and a cleaner investment calculation from the start.
It also means you're not living in a construction zone for the better part of a year.
The one question worth asking yourself
If your property can hold a second unit — either under current zoning or with a straightforward permit — and you're not using that capacity, you're leaving a meaningful financial asset sitting untapped. The question isn't really whether an ADU makes sense financially. For most Utah landowners in residential zones, it does. The question is whether the timing and logistics work for your specific situation.
That's exactly the kind of conversation we're set up to have. We work with landowners across Utah County and six other western states to assess ADU feasibility, walk through model options, and get homes on parcels faster than any other option on the market.
Find out what an ADU could do for your property.
Fill out our contact form with your property details and goals — we'll give you a straight answer on what's realistic.