There’s really no straight answer to this question without knowing more about your goals (short and long term) and the parameters surrounding your property. We need to weigh many factors and variables such as the location of the ADU on your property, if the existing infrastructure of your home will support an ADU, your design preferences, how big you want your ADU to be and how many rooms you need, the number of bathrooms, the level of finish materials, size of the kitchen and bathroom, if there’s a laundry room, and more.
Garage conversions may require a lot of work to make them livable even though the shell of the structure exists. Concrete slabs and foundations may need to be removed for power, sewer, and water, and require retrofitting the foundation.
Have realistic expectations about the costs. Some assume because they have a small home it will be cheaper to build; in fact it’s just the opposite due to the economy of scale and reasons mentioned above.
Many companies advertise low costs for an ADU just so you will contact them. Often the cost other companies advertised only includes the shell of the home (foundation, framing, roof, and windows).
As a ballpark budget, a detached ADU can cost upwards of $120,000 to design and build. An ADU conversion can cost upwards of $100,000, depending on the state of the current structure.
Yes, an ADU is a long-term real estate investment best examined over a 15 to 30 year period. There is equity added to your property when remodeling, adding square footage, or building an ADU. If you plan to rent your ADU we will factor in the passive income.
We also factor what it’s costing you if you don’t build an ADU in the short-term and the long-term. Applying the savings of expenditures you or your family are paying for such as senior housing, childcare, student housing, office rental factor into the total costs of your investment.
Adding an ADU is a major investment into your property. An ADU can enhance the attractiveness of a house on the real estate market. The type of ADU, level of finish, the property location, and other factors will affect sales costs. We work with Realtors and appraisers who can help determine this value.
Yes, we are partnered with a prefab ADU manufacturer, but this may not be the best option depending on the size, design, and location of your ADU. We most often build conventionally with stick framing and sometimes with trusses. This structural style has been time-tested and allows more flexibility in design and construction. Depending on the complexity, a prefab ADU typically shortens construction by a few weeks, but can take longer for city approval. Cost of building a prefab ADU is comparable to conventional stick framing. Alternatively, we find that our ready-made construction plans speed the design and construction process, are cost effective, utilize time tested construction techniques, and allow for more customization for you and your property..
Harding Construction has taken some of the guess work out of the equation to provide you with a turnkey solution to creating an ADU. We have curated a selection of pre-conceived combinations of materials, floorplans, and color palettes allowing you to make a fraction of the decisions and expedite the planning process.