ADU Construction Services in Highlands Ranch
Highlands Ranch is not a typical accessory dwelling unit market. Roughly thirty thousand homes here sit under a single community association with active architectural review and enforceable covenants, the area is unincorporated so permitting runs through Douglas County, and lot coverage on many subdivisions leaves very little room behind the house. All of that means the first honest question is not what your ADU should look like. It is whether you are permitted to build one, and in what form. If a builder is quoting ADU construction in Highlands Ranch without having read your covenants or run your lot coverage numbers, they are quoting a project that may not exist.
Can You Build an ADU in Highlands Ranch?
We find out first, and we do it in a specific order. Covenants come before code. Zoning permission and covenant permission are separate things, and a private community restriction can prohibit a structure that the county would approve without hesitation. We read what actually applies to your property rather than relying on what a neighbor did or what someone posted in a community forum.
Then the arithmetic. Lot coverage limits, setbacks, and height allowances get measured against your real parcel dimensions, because a detached accessory dwelling unit simply will not fit within the allowable footprint on a good number of Highlands Ranch lots. Better to establish that in an afternoon than after paying for drawings.
You get a plain answer: yes in this form, yes with these constraints, or no with the reason. Homeowners tell us the no answers were worth as much as the yeses.






Rental Plans? Check the Covenants First
If income is your reason for building, this matters more than the construction does. Community covenants commonly regulate leasing, and restrictions can include minimum lease terms, limits on the number of unrelated occupants, prohibitions on short term rental, and rules about renting a portion of a property separately from the whole. A unit built and finished beautifully is worth very little as an investment if you are not permitted to rent it the way your projections assumed.
We look into those restrictions during the review visit, before design, and we tell you what we find. It is a fifteen minute conversation that has saved clients from six figure mistakes. If the leasing rules do not support your plan, you still have options worth discussing, they are just different options than you arrived with.
Basement and Interior ADU Conversions
In Highlands Ranch, the practical answer is frequently an interior conversion rather than a new detached building. It does not consume lot coverage, it does not alter the exterior in ways that trigger difficult review, and the shell already exists, which means the cost lands well below new construction.
Done properly, an interior suite is genuinely independent living space, not a finished basement with a hot plate. That requires code compliant egress, adequate ceiling height, ventilation and mechanical capacity for a second household, moisture control, fire separation where required, and acoustic performance built into the floor and wall assemblies so two households can live above and below each other without hearing everything.
Approved on the First Submittal
Architectural review is not a formality here, and a rejected submittal costs weeks. Most contractors treat the application as paperwork to file after the design is finished. We work the other direction and design to the review criteria from the start: materials, colors, rooflines, height, placement, and screening chosen because they will be approved rather than because they were convenient to draw.
We prepare and carry the submittal, respond to comments, and manage the Douglas County permitting alongside it. We also tell you at the outset how long the review is likely to add to your schedule, so the timeline you plan around includes it. A schedule that ignores review cycles is not a schedule. From there: design and structural engineering, permitting, and construction supervised on site by Ricardo, with our own crews handling any exterior and site work the project involves.


Get a Straight Answer on Your ADU
The most expensive accessory dwelling unit is the one that gets designed, priced, and then blocked. In a community with this much covenant structure, avoiding that outcome is most of the value a builder can offer, and it happens in the first meeting rather than the fifth.
Faros Construction Services does the research before the drawings: what your covenants allow, what your lot coverage permits, what the leasing rules mean for your plan, and what form of unit is realistically approvable on your property. As experienced ADU builders in Highlands Ranch, CO, we then handle design, architectural review, county permitting, construction, and the site work, with one person accountable the whole way.
Call or request a quote to schedule your review. You will get a direct answer on what you can build, what it will cost, and how long the approvals will take.

