Boise · Ada County, Idaho
We Buy Property in Boise, Idaho
Boise is the largest city in Ada County at roughly 238,000 people, and the slowest growing — about 1.0% between the 2020 census base and the 2024 estimate, against 61.4% in Star and 21.0% in Kuna. A market that is not adding people is a market where the existing housing stock, and its condition, does most of the work.
We buy houses, infill lots, multifamily, office and industrial property across the city.
237,963
Residents
Census Bureau, Population Estimates Vintage 2024
1%
Growth
2020 census base to 2024 estimate, same vintage
Ada
County
Ada County
The foothills overlay changes what a buyer can do
Boise maintains a Wildland Urban Interface Overlay covering land at higher risk of wildland fire. Its provisions apply to all new structures and additions built after its effective date, and to renovations that increase an existing structure's gross floor area by more than 49 percent. Interior-only renovations are excepted regardless of area.
For a seller in the foothills that threshold matters more than it first appears. A buyer planning a modest addition may stay outside it; a buyer planning to nearly half again the size of the house does not, and their construction costs change accordingly. It is a question worth knowing the answer to before you price the property.
Sewer connection is mandatory, and there may be a second fee
Residential and commercial buildings in Boise must connect to the city sewer system, which Public Works operates across more than 1,000 miles of pipe. That is a straightforward contrast with unincorporated Ada County, where on-site septic is permitted under Central District Health.
Less well known is the assessment fee. Boise charges a one-time assessment, separate from the connection fee, for properties that have never been developed or never connected. The city names three cases where it will likely apply: building on a lot being split, building on a previously undeveloped lot, and connecting an existing building to sanitary sewer.
If you are selling an infill lot or a parcel you have split, that fee lands on your buyer's numbers and therefore on your price. The city publishes no amounts, so we do not quote one — but the cost is real and it is worth asking about before you assume a lot is clean.
Flooding here has three sources, not one
Boise participates in the National Flood Insurance Program because of flood threats from the Boise River, from foothills gulches, and from several intermittent stream channels on the upper bench. Properties nowhere near the river can sit in a mapped hazard area for the second or third reason.
Ada County adopted new FEMA Flood Insurance Rate Maps in June 2020, and any development in the floodplain requires a Floodplain Development Permit. We do not tell sellers what zone their property is in — that comes from the current FEMA map for the specific address, and nowhere else.
A flat market makes condition the variable
Boise added roughly 1.0% to its population between the 2020 census base and the 2024 estimate. Meridian added 18.6% and Star 61.4% over the same period. Where a city is not absorbing new arrivals, prices are set far more by the condition and character of the houses already standing than by pressure from newcomers.
Boise's median age was 37.9 in 2022, against 47.1 in Garden City and 30.2 in Kuna. That spread across a single county is a reasonable proxy for very different housing stock and very different reasons for selling — estates and downsizing at one end, growing households at the other.
For a seller it means the honest comparison is not against what a similar house fetched in Meridian last quarter. It is against what your house, in its condition, is worth to the buyers actually in this market.
Infill lots carry costs that are easy to miss
A lot split in Boise touches several things at once. The sewer assessment fee applies to previously undeveloped ground and to lots being split. The Assessor, who maintains parcel boundaries and Records of Survey, also runs addressing for every parcel in the county, so a new lot needs an address before it is a usable thing.
Idaho's domestic water statute is worth knowing here too, even inside the city: it caps domestic use at 13,000 gallons a day including half an acre of irrigation, and expressly excludes subdivisions of five or more lots and multiple-dwelling developments. That is a constraint on what a parcel can become, not just on how it is watered — and the statute was amended twice in two years, so it is worth checking rather than assuming.
None of this makes an infill lot a bad asset. It means the number a buyer can pay is the residual after those costs, and a seller who knows them is negotiating from the same page.
The zoning code was replaced in December 2023
Boise did not amend its zoning code; it replaced it. The City Council approved a modern zoning code after community testimony and revisions, and it took effect on 1 December 2023.
That matters to a seller for a simple reason. Owners carry an understanding of what their lot allows, usually formed when they bought, and for anyone who bought before the end of 2023 that understanding was formed under a different code. What can be added, what can be built and what uses are allowed may not be what they were.
None of that means a given property gained or lost anything — the effect varies by district and by parcel, and we do not assume it in either direction. It means the current code is the one to read, and an old recollection is not.
Short-term rental licensing ended in May 2026
Until recently a Boise short-term rental needed a city license. On 12 May 2026 the City Council approved repeal of the short-term rental ordinance to align with a change in Idaho law on local regulation of short-term rentals, and from 18 May 2026 a city license is no longer required.
For a buyer weighing a Boise house as a short-term rental, that removes one layer. It does not remove the rest: the city says it will keep enforcing nuisance, noise, parking, safety and occupancy rules consistent with state law and city code. A license that no longer exists is not the same thing as a use that is unregulated.
Impact fees: replacing a house is not adding one
Boise charges development impact fees to cover the cost new development places on regional parks, local parks, fire response and policing. They are not the same for every project: new residential development pays parks, fire and police fees, while commercial development pays only fire and police.
The exemptions are where the difference between buyers is decided. The city exempts replacing a residential unit — including a manufactured home — with another on the same lot, as long as the number of service units does not increase. Remodeling that adds no service units is exempt, and so is rebuilding the same floor area after a fire or other catastrophe if it is ready to occupy within two years.
So a buyer who plans to replace an old house with one new house is in a different position from a buyer who plans to put more units on the same lot. The second carries fees the first does not, and that shows up in what each can pay. We are not quoting amounts: the city publishes a separate fee schedule, and it changes when the underlying study is updated.
Demolition is a permitted process, with a reuse step built in
A teardown in Boise is not a same-week job. Demolition and deconstruction go through a building permit, and the application includes a material and waste management plan with photographs of the building and the materials in it.
The city then emails reuse and recycling companies about what is available and allows up to five business days for them to respond before salvage is arranged. A building inspector sets a bond, and any hazardous materials have to be abated under the applicable EPA and other requirements.
If you are selling an older house on a lot a buyer values for what could replace it, that timeline and that bond are part of the buyer's cost — and so part of the price.
Ten historic districts, and a review for exterior changes
Boise has ten designated historic districts. Six are residential — East End, East Main Street, Harrison Boulevard, Hays Street, North End and Warm Springs Avenue — three are commercial, and one, Spaulding Ranch, is agricultural.
Inside them, most exterior changes beyond standard maintenance need a Certificate of Appropriateness: new construction, additions, accessory buildings, and changes such as siding and windows. The level of review depends on the district, the property's status and the scope of the work.
Two cautions. A neighbourhood name is not a boundary: whether a particular house sits inside a historic district is answered by the city's address lookup, not by what people call the area. And most changes is not all of them. But a buyer planning to re-side or re-window a house in one of these districts is taking on a review as well as a project, and a seller who knows that can price it rather than be surprised by it.
Drinking water comes from a regulated private utility
In Boise the water company and the city are different organisations. Drinking water is supplied by privately owned utilities regulated by the Idaho Public Utilities Commission — chiefly Veolia Water Idaho and, for a much smaller area, Capitol Water Corporation. Both bill a 3 percent City of Boise franchise fee to customers inside city limits, for Veolia under City of Boise Ordinance No. 5623.
The two are very different in scale. In 2023 the Commission described Veolia as providing service to Boise City and surrounding areas, with approximately 105,000 customers across Ada County; its annual report that year put Veolia at 105,445 customers and Capitol Water at 3,019. Those are 2023 figures, and Veolia's customers extend beyond the city, so neither number is a count of Boise households.
Their water comes from different places too. Veolia runs two treatment plants, Columbia and Marden, alongside dozens of wells, and federal records classify its primary source as surface water. Capitol Water supplies groundwater from four primary wells and a backup well. The City of Boise, for its part, states that 70 percent of Boise's drinking water supply comes from groundwater — a different measure from the federal classification, and we do not try to reconcile the two.
For a seller the practical point is simple. Which utility serves a property is a question for the utility, not for city hall, and a buyer taking over service is dealing with a company whose rates are approved by a state commission rather than by the city council. We do not assume which of the two — or which of the smaller private systems in the area — serves any particular address.
What that means for the offer
A Boise property with an overlay, an unconnected lot or a mapped flood hazard is not a property we decline. It is a property whose costs we have to count before we can put a number on it, and counting them out loud is how we would rather work.
When we make an offer we show the after-repair value we used, the work we think the property needs, our holding costs and the spread we run on. You can check every line of it: the public records yourself, and the comparable sales because we name them.
Where this comes from
Every factual statement above is traced to a published source, quoted below in the source's own words. Statutes and county practice change; each entry carries the date we last checked it.
Wildland Urban Interface Overlay — City of Boise
City of Boise
The City of Boise has a Wildland Urban Interface Overlay (WUI-O) zoning district covering land at higher risk of wildland fire, whose provisions apply to all new structures and additions built after its effective date and to renovations that increase a structure's gross floor area by more than 49 percent.
“The purpose of the WUI-O is to reduce the risks to human life, property, livelihoods, and wildlife within areas with higher risk of wildfire, and to recognize and clarify the respective roles of the city and property owners in the WUI-O to reduce those risks. ... The provisions of this Section 11-02-07.3.H shall apply to the following activities ... i. All new structures and additions to structures constructed in the WUI-O after the Effective Date; and ii. Renovation or modification of primary and accessory structures existing on the Effective Date that increase the gross floor area of the structure on the Effective Date by more than 49 percent.”
Checked 2026-09-09 · Boise, Idaho
Sewer Connections and Fees — City of Boise Public Works
City of Boise
Residential and commercial buildings in Boise must connect to the city sewer system, which the Public Works Department operates across more than 1,000 miles of pipe.
“Residential and commercial buildings must connect to the sewer system.”
Checked 2026-09-09 · Boise, Idaho
Boise charges a one-time sewer assessment fee, separate from connection fees, for properties that have never been developed or never connected; it is likely to apply when building on a lot being split, building on a previously undeveloped lot, or connecting an existing building to sanitary sewer.
“If you are building on an existing lot which is being split, building on a previously undeveloped lot or connecting an existing building to sanitary sewer, the assessment component of the connection fees will likely be required.”
Checked 2026-09-09 · Boise, Idaho
Water, Wastewater & Septic — Central District Health
Central District Health
Central District Health's Environmental Health Division permits septic systems, reviews land development applications and verifies the location of shallow injection wells across Ada, Boise, Elmore and Valley counties.
“Environmental Health Specialists at Central District Health (CDH) permit septic systems, review land development applications and verify location of shallow injection wells to ensure reliable and safe water resources for the community.”
Checked 2026-09-09 · Ada County, Idaho
Floodplain Information — City of Boise
City of Boise
Boise participates in the National Flood Insurance Program because of significant flood threats from the Boise River, foothills gulches and several intermittent stream channels on the upper bench.
“The City of Boise participates in the National Flood Insurance Program due to the existence of significant flood threats related to the Boise River, foothills gulches and several intermittent stream channels on the upper bench.”
Checked 2026-09-09 · Boise, Idaho
Hazardous Overlay Districts — Ada County Development Services
Ada County Development Services
Ada County adopted new FEMA Flood Insurance Rate Maps in June 2020.
“In June, 2020, Ada County adopted the new FEMA Flood Insurance Rate Maps.”
Checked 2026-09-09 · Ada County, Idaho
Any development within the floodplain in Ada County requires a Floodplain Development Permit, and the technical definition of floodplain for development purposes is in Ada County Ordinance 835.
“Any development within the Floodplain will require a Floodplain Development Permit.”
Checked 2026-09-09 · Ada County, Idaho
Population Estimates, Vintage 2024 — Subcounty Resident Population
U.S. Census Bureau
Population growth across Ada County's cities diverged sharply between the 2020 census base and the 2024 estimate: Star +61.4%, Kuna +21.0%, Meridian +18.6%, Eagle +7.4%, Garden City +5.1%, Boise +1.0%.
Checked 2026-09-09 · Ada County, Idaho
Comprehensive Population Demographics — Ada County
Ada County
Median age varies sharply across Ada County's cities: Kuna 30.2, Boise 37.9, Meridian 38.7, Star 41.4, Eagle 46.8 and Garden City 47.1, against a county median of 39.1 (2022).
Checked 2026-09-09 · Ada County, Idaho
Assessor's Property Records — Ada County Assessor
Ada County Assessor
The Ada County Assessor maintains comprehensive property records on all real and personal property in the county — parcel ownership, land and improvement characteristics, parcel boundaries and road rights-of-way — and manages the addressing process for all parcels in the county. Its online maps carry parcel boundaries, streets, hydrography, section boundaries, city limits, parks and schools, alongside Records of Survey and subdivision plats.
“The Ada County Assessor's Office maintains comprehensive property records on all real and personal property within the county. This includes, parcel ownership, land and improvement characteristics, parcel boundaries, road rights-of-way, and the office also manages the addressing processes for all parcels within the county.”
Checked 2026-09-09 · Ada County, Idaho
Idaho Code § 42-111 — Domestic purposes defined
Idaho State Legislature
Amendment history
[(42-111) 1899, p. 380, part of sec. 12; reen. R.C. & C.L., sec. 3250; C.S., sec. 5566; I.C.A., sec. 41-111; am. 1990, ch. 319, sec. 1, p. 870; am. 1995, ch. 233, sec. 1, p. 790; am. 2025, ch. 129, sec. 1, p. 663; am. 2026, ch. 2, sec. 1, p. 7.]
Idaho defines domestic water use as use for homes, camps, campgrounds and livestock including irrigation of up to half an acre, provided total use does not exceed 13,000 gallons per day; or any other use not exceeding 2.8 acre-feet per year.
“The use of water for homes, organization camps, public campgrounds, livestock, and for any other purpose in connection therewith, including irrigation of up to one-half (1/2) acre of land, if the total use does not exceed thirteen thousand (13,000) gallons per day; or 2. The use of water for any other purpose, if the total use does not exceed a diversion volume of two and eight-tenths (2.8) acre feet per year.”
Checked 2026-09-09 · Idaho
For Idaho's domestic water statutes a subdivision is a tract divided into five or more lots, parcels or sites for sale or building development, excluding a bona fide division of agricultural land into lots of five acres or larger maintained as agricultural land.
“"Subdivision" means a tract of land divided into five (5) or more lots, parcels, or sites for the purpose of sale or building development, whether immediate or future; provided that this definition shall not include a bona fide division or partition of agricultural land for agricultural purposes.”
Checked 2026-09-09 · Idaho
A Modern Zoning Code
City of Boise — Planning and Development Services
Boise replaced its zoning code with a modern zoning code approved by the City Council and effective December 1, 2023, so zoning rules for a Boise parcel may differ from what applied before that date.
“A similar process was followed by Boise City Council, hearing community testimony, advising revisions and approving the zoning code effective December 1, 2023.”
Checked 2026-09-12 · Boise, Idaho
Short-Term Rental License
City of Boise — City Clerk
Boise no longer requires a short-term rental license. The City Council approved repeal of the city's short-term rental ordinance on May 12, 2026, to align with changes in Idaho state law on local regulation of short-term rentals, effective May 18, 2026. The city says it will continue enforcing nuisance, noise, parking, safety and occupancy rules.
“On May 12, 2026, Boise City Council approved the repeal of the city’s short-term rental ordinance to align with changes in Idaho state law regarding local regulation of short-term rentals.”
Checked 2026-09-12 · Boise, Idaho
Impact Fees
City of Boise — Finance
Boise charges development impact fees that differ by type of development: new residential development pays parks, fire and police impact fees, while commercial development pays only fire and police fees because it typically does not directly impact regional and local parks.
“New residential development pays parks, fire, and police impact fee types because they impact all three services. Commercial development pays only fire and police impact fees, because it typically does not directly impact regional and local parks.”
Checked 2026-09-12 · Boise, Idaho
Boise exempts several activities from impact fees, including replacing a residential unit — a manufactured home included — with another residential unit on the same lot where the number of service units does not increase, remodeling that does not add service units, and rebuilding the same floor area after a fire or other catastrophe if it is ready for occupancy within two years.
“Replacing a residential unit, including a manufactured home, with another residential unit on the same lot, provided that the number of service units does not increase”
Checked 2026-09-12 · Boise, Idaho
Demolition/Deconstruction
City of Boise — Planning and Development Services
Boise's demolition and deconstruction permit application includes a material and waste management plan with photos of the building and its materials; the city emails reuse and recycling companies about available materials and allows up to five business days for them to respond before salvage is arranged. A building inspector sets a bond, and hazardous materials must be abated under applicable EPA and other requirements.
“Allow up to five (5) business days for response of interest in any materials from Reuse Companies.”
Checked 2026-09-12 · Boise, Idaho
Historic Districts
City of Boise — Planning and Development Services
Boise has ten designated historic districts: six residential (East End, East Main Street, Harrison Boulevard, Hays Street, North End and Warm Springs Avenue), three commercial (Hyde Park, Old Boise and South Eighth Street) and one agricultural (Spaulding Ranch).
“Boise has ten designated historic districts that serve as visible reminders of the historical, archaeological, architectural, educational, and cultural heritage of Boise.”
Checked 2026-09-12 · Boise, Idaho
Historic Preservation
City of Boise — Planning and Development Services
In Boise's historic districts, most exterior changes beyond standard maintenance require a Certificate of Appropriateness — including new construction, additions, accessory buildings, and changes such as siding and windows — with the level of review set by a decision matrix based on the district, the property's status and the scope of work.
“Most exterior changes in the historic districts require a Certificate of Appropriateness to make modifications to a home in a Historic District outside of standard maintenance”
Checked 2026-09-12 · Boise, Idaho
Veolia Water Idaho, Inc. — Rate Schedules and Rules and Regulations (IPUC-approved tariff)
Veolia Water Idaho, Inc. (approved by the Idaho Public Utilities Commission)
Drinking water in Boise is supplied by privately owned utilities regulated by the Idaho Public Utilities Commission, chiefly Veolia Water Idaho and Capitol Water Corporation. Both bill their customers inside Boise city limits a 3 percent City of Boise franchise fee — for Veolia under City of Boise Ordinance No. 5623, effective December 17, 2003.
“City of Boise 5623 December 17, 2003 3.0%”
Checked 2026-09-12 · Boise, Idaho
Idaho Public Utilities Commission Final Order No. 35762 — Veolia Water Idaho general rate case (VEO-W-22-02)
Idaho Public Utilities Commission
In 2023 the Idaho Public Utilities Commission described Veolia Water Idaho as providing service to Boise City and surrounding areas and serving approximately 105,000 customers in Ada County, under Amended Certificate of Public Convenience No. 143. The Commission's 2023 annual report lists Veolia Water Idaho at 105,445 customers and Capitol Water at 3,019, both with Boise as the nearest city.
“Veolia is a Commission-regulated water corporation that provides service to Boise City and surrounding areas and currently serves approximately 105,000 customers in Ada County, Idaho.”
Checked 2026-09-12 · Boise, Idaho
Describes a fixed past period — not a current figure.
Idaho DEQ Drinking Water Watch — Water System Details, ID4010016 Veolia Water Idaho
Idaho Department of Environmental Quality
Veolia Water Idaho draws on both surface and ground water: the state's drinking water record lists two treatment plants, Columbia and Marden, alongside dozens of wells, and federal records classify the system's primary source as surface water and put it at 264,978 people served through 108,138 connections. The City of Boise, for its part, states that 70 percent of Boise's drinking water supply comes from groundwater.
“Principal County Served : ADA Primary Source : SW”
Checked 2026-09-12 · Boise, Idaho
Capitol Water Corporation — Water Quality Report 2025
Capitol Water Corporation
Capitol Water Corporation, Boise's second regulated water utility, supplies groundwater: its 2025 water quality report describes water from four primary wells and one backup well, and federal records put the system at 9,000 people served through 2,811 connections.
“water from four primary wells and one”
Checked 2026-09-12 · Boise, Idaho
Start with the address.
One field. We will look at the parcel and the comparable sales, then come back with a number and the working behind it. No obligation, and no pressure if the answer is that you should list it instead.
Serving Boise, Meridian, Eagle, Kuna, Star, Garden City and unincorporated Ada County.