The Real Cost of Living in Agat and Merizo, Guam
Agat and Merizo run on the same territorial tax and construction rules as the rest of Guam -- there is no separate south-Guam tax code -- but the rural, single-family, military-adjacent character of these two villages changes the practical cost picture from Guam's resort north in real ways: land tenure is more likely to involve the Chamorro Land Trust, daily errands mean a longer drive to the island's main retail and hospital core, and this page could not find a current, village-specific home price to anchor a purchase budget around. What follows states the territorial numbers that are genuinely sourced, and is direct about the local numbers this research session could not confirm rather than inventing them.
Why a Village-Specific Price Number Is Missing From This Page
This page does not state a current median sale price, price-per-square-foot, or days-on-market figure specific to Agat or Merizo, because this research session had no working internet access at any point -- its search tool's query budget was already exhausted before a single search for this market could run, and its page-fetch tool was blocked by the session's own network policy on every host it tried. That is a real limitation of this particular research pass, not a statement that no such data exists; the Guam Association of Realtors' MLS and licensed local agents hold current, accurate figures this page simply didn't have access to this session. The nearest honestly-sourced anchor is a territory-wide, Guam-wide snapshot already published on this site's Tumon, GU pages: roughly $460,000-$500,000 for move-in-ready, concrete-construction single-family homes as of a September 2025 market read, with a median of about 127 days on market and more supply than demand territory-wide at that time. That figure describes Guam broadly, including Tumon's condo-heavy resort inventory, and should not be read as an Agat or Merizo number -- rural southern villages, built overwhelmingly of standalone single-family homes rather than condos, are generally understood locally to price differently than the resort corridor, but this page is not going to state a specific dollar figure for that difference without a source to back it.
Real Property Tax: The Same Low Territorial Rate, Worked Through an Example
Guam's real property tax runs at 0.0972% of assessed land value plus 0.3889% of assessed improvement value annually, with assessed value currently set at 90% of a parcel's appraised value, per the Guam Department of Revenue and Taxation's published structure -- the identical territory-wide rate this site's Tumon pages document in more depth, and it applies to Agat and Merizo the same way it applies to Tumon or anywhere else on the island. To make that concrete: for a hypothetical $300,000 appraised home, assessed value at 90% works out to $270,000. If that assessed value split evenly between land and improvement for illustration only (a simplifying assumption, not a real assessment method), the annual bill would run roughly $131 on the land portion (0.0972% of $135,000) plus roughly $525 on the improvement portion (0.3889% of $135,000), for a total near $656 a year -- genuinely low by mainland US standards. A real parcel's actual land-versus-improvement split, and its actual current appraised value, can only be confirmed by the Department of Revenue and Taxation or a current tax-card pull for that specific address; this is an illustration of how the rate works, not a quote for any real Agat or Merizo property.
Land Tenure: A Real Question in These Villages That Doesn't Come Up the Same Way in Tumon
Guam's Chamorro Land Trust, established by a 1975 Act of the Guam Legislature, holds roughly 20,000 acres of government land leased to qualifying Chamorro descendants -- often for residential, farming, or grazing use, at nominal long-term lease rates rather than fee-simple private ownership. This program is concentrated in Guam's rural and southern villages more than in the dense, already fully-developed resort corridor, which makes it a genuinely relevant question for a buyer looking at Agat or Merizo specifically: is a given parcel privately owned in fee simple, or is it Land Trust-leased land where the underlying government ownership limits who can hold or transfer it? This page did not independently confirm what share of land in Agat or Merizo specifically sits under the Trust versus in private fee-simple ownership this session -- that is a parcel-by-parcel question a title search and the Department of Land Management can answer, and it should be confirmed before assuming a straightforward private purchase the way a mainland buyer would expect.
No State Income Tax Layer -- a Federal-Mirror System, Filed Locally
Guam does not levy a separate territorial income tax on top of a federal one. Instead, under 48 U.S.C. § 1421i and Internal Revenue Code Section 935, Guam residents' income tax follows the same brackets and general mechanics as the federal Internal Revenue Code, with 'Guam' substituted for 'United States,' but the actual filing goes to the Guam Department of Revenue and Taxation rather than the IRS. This is a real, structural, territory-wide fact that applies to a household relocating to Agat or Merizo exactly as it applies to a Tumon resident -- it is not a Guam-specific tax break stacked on top of federal tax, but a mirrored version of the same federal system administered locally. Current specific tax brackets and deduction thresholds track the applicable federal tax year; a tax professional experienced with Guam mirror-code filings, not a mainland-only preparer, should be consulted for actual filing obligations.
The Business Privilege Tax Applies to Any Rental Income Here Too
Guam's Business Privilege Tax (BPT) runs at 5% of gross receipts, effective since June 1, 2018, and it explicitly includes rental of real property in what counts as taxable gross income under Guam law. That applies whether the rental is a Tumon tourist condo or a long-term rental house in Agat or Merizo -- a genuine, recurring cost on any rental income here, on top of whatever net income tax is owed under the mirror system described above. Given that Agat and Merizo are not part of Guam's tourism corridor, any realistic rental income here is far more likely to be long-term, local, or military-adjacent rental than short-term vacation rental -- covered in more depth on the investment-outlook page.
Typhoon-Rated Construction and Insurance: A Real, Recurring Cost Territory-Wide
Guam's building code requires new construction to resist sustained winds of 195+ mph, and reinforced concrete is effectively the dominant, near-mandatory construction material territory-wide -- wood and tin structures have historically suffered the worst documented damage in past typhoons. That code applies to a home in Agat or Merizo exactly as it applies anywhere else on the island, and it's a genuine, structural reason Guam homes are typically built the way they are rather than a stylistic preference. Guam's confirmed, direct-hit typhoon history backs up why the code is this strict: Super Typhoon Pongsona struck the whole island on December 8, 2002 with gusts near 175 mph and over $730 million in documented damage, and Typhoon Mawar struck the whole island on May 24-25, 2023, knocking out power, water, and phone service to more than 90% of Guam and causing an estimated $4.3 billion in damage -- both events affected the south's villages along with everywhere else, not just the resort corridor. This page did not find a specific, current windstorm or homeowners insurance premium for an Agat or Merizo address this session; get an actual quote from a Guam-licensed insurance broker before budgeting a number, and ask directly how the carrier treats concrete versus non-concrete construction and distance from the coast in its underwriting.
The Broader Cost-of-Living Picture, With a South-Guam Distance Factor on Top
Multiple cost-of-living trackers put Guam's overall cost of living at roughly 50% above the US mainland average, with groceries specifically estimated around 28% higher, largely because the Jones Act of 1920 requires cargo moving between US ports -- Guam included -- to travel on US-flagged, US-built, US-crewed vessels, a real and frequently cited factor in why imported goods and building materials cost more here than shipping distance alone would suggest. The Guam Power Authority's electricity rates also run above the US national average, driven by the island's dependence on imported fuel for power generation. On top of that territory-wide baseline, Agat and Merizo add a real, if modest, distance factor: both villages sit a meaningful drive from Guam's main retail, hospital, and airport infrastructure clustered around Hagåtña and Tamuning to the north, which means more routine driving time and fewer nearby big-box or grocery options than a Tumon or Tamuning address would have -- a genuine daily-living cost this page states honestly as a reasonable geographic inference, not a number this research independently measured this session.
HOA and Association Costs
Agat and Merizo are overwhelmingly single-family and agricultural land, not condominium or planned-community product the way much of Tumon's resort-strip inventory is -- this page did not identify any significant HOA-governed subdivision in either village, and none is assumed here. Any specific listing describing an association, covenant, or shared-maintenance agreement should have its actual current dues and governing documents confirmed directly rather than assumed absent, and the Chamorro Land Trust land-tenure question above should be checked for the specific parcel as part of the same due-diligence pass.
Putting the Real Number Together
This page can state with sourced confidence: a genuinely low real property tax rate (0.0972% land / 0.3889% improvements against 90% of assessed value), a 5% Business Privilege Tax on any rental income, insurance and construction costs shaped by a 195+ mph wind-resistance building code and a real, recent, island-wide typhoon history, a roughly 50%-above-mainland general cost of living driven substantially by Jones Act shipping costs, and a real land-tenure question (Chamorro Land Trust versus fee-simple) worth checking parcel-by-parcel in these villages specifically. What it cannot state, honestly, is a current Agat- or Merizo-specific home price, insurance premium, or utility bill, because this research session had no working internet access to confirm one. Before making an offer, get current written numbers from the real sources: the Guam Department of Revenue and Taxation for property tax and BPT specifics, a Guam-licensed insurance broker for windstorm and flood premiums, the Department of Land Management or a title search for land-tenure status, and a Guam-focused buyer's agent for actual current comparable sales in Agat and Merizo specifically.
Ready to talk to a local Agat / Merizo agent?
Get a Free Agent Referral →Independent research. No ads. No sponsored listings. This is a pilot "thin market" build (hub + 2 topic pages), not the site's full 22-page research format, and this specific session had no working web access at all -- its search tool reported its query budget already exhausted before any search for this market ran, and its page-fetch tool was blocked by the session's own network egress policy on every host tried, confirmed against that proxy's own status endpoint. Given that, this page draws its territory-wide tax and typhoon figures directly from this site's own already-published, already-sourced Tumon, GU real-cost, property-tax, and hurricane-risk pages -- the real property tax rate (0.0972% land / 0.3889% improvements against 90% of assessed value, per GuamTax.com and Guam Office of Public Accountability materials), the Business Privilege Tax (5% since June 1, 2018), the federal-mirror income tax system (48 U.S.C. § 1421i, IRC Section 935), the Chamorro Land Trust Act of 1975, and the Typhoon Pongsona (Dec. 8, 2002; NOAA/NWS-sourced) and Typhoon Mawar (May 24-25, 2023; FEMA DR-4715-GU) storm records -- all of which are territory-wide facts equally applicable to Agat and Merizo, not resort-strip-only facts borrowed out of context. The worked property-tax example above is this page's own straightforward rate-times-value arithmetic, built on an explicitly stated, simplified 50/50 land-improvement assumption for illustration, not a real parcel's assessment. Genuine, disclosed gaps: no current median home price, price-per-square-foot, or days-on-market figure specific to Agat or Merizo; no current windstorm, flood, or homeowners insurance premium for either village; no confirmed current share of land under the Chamorro Land Trust versus private fee-simple ownership in either village specifically; and no independently measured commute-time or retail-access figure for the south-Guam distance factor described above. Get an actual comparative market analysis from a Guam-focused buyer's agent, an actual tax-card pull from the Department of Revenue and Taxation, actual insurance quotes, and a title search confirming land-tenure status before budgeting a purchase. Nothing on this page is legal, tax, or insurance advice.