Algoa is a crossroads community in northern Galveston County, unincorporated, sitting where the rail line and the farm roads meet between Alvin, Santa Fe and Dickinson. It has never been a town in the ordinary sense and it has no separate market data.
ZIP 77511 belongs to Alvin, several miles north, and carries a $330,601 median with 66 days on market and 6.32 months of supply on 278 listings. Alvin is a functioning small town with subdivisions and a downtown. Algoa is fields, scattered houses and acreage.
So the headline number describes a different kind of place. What matters here is land: how much, what it is valued as for tax purposes, and what happens to that valuation when it changes hands.
The 77511 Market, Shared With Alvin
| Measure | Figure |
|---|---|
| 77511 median (shared ZIP) | $330,601 |
| Median days on market | 66 days |
| Months of inventory | 6.32 |
| Active listings, whole ZIP | 278 |
| One-year return | +0.25% |
| 20-year total return | +66.5% |
⚠️ 77511 is an Alvin ZIP dominated by subdivision housing. Algoa acreage has almost nothing in common with it, and land value rather than house value usually decides the price here.
Source: HouseCanary ZIP-level market data, July 2026. Last verified 27 July 2026.
What Actually Decides an Algoa Sale
Agricultural valuation and the rollback tax. Texas allows qualifying land to be taxed on its agricultural productivity rather than its market value, which is a large annual saving. When the use changes, the appraisal district can recover the difference for the preceding three years plus interest. That bill lands on whoever owns the land when the change happens, and it needs to be settled at the negotiating table rather than discovered afterwards.
Land, not improvements. On most parcels here the acreage carries the value and the house is a secondary consideration. Money spent making an older farmhouse presentable is frequently money wasted, because the buyer's interest is in the ground.
Wells, septic and utilities. Outside municipal service you are on your own water and treatment, and a financed buyer's lender will want both checked. Where a parcel has no utility connection at all, that is a cost the buyer prices in.
Frontage and access. Road frontage, whether access is by easement, and whether the parcel can be legally divided all matter more to the price than anything inside the house.
The circumstances that bring Algoa owners to us are inherited farmland and property nobody is farming any more.
We buy throughout Algoa, including Algoa, State Highway 6 corridor, Algoa Friendswood Road, Hall Road, Alvin borders, Santa Fe edge, Dickinson side and Arcadia.
The Rollback Tax, Explained Before It Surprises You
This catches more sellers of rural land than any other single issue, so it is worth setting out properly. We are not tax advisers and you should confirm the specifics with your appraisal district or an accountant, but the mechanism is straightforward.
What the exemption does. Land in genuine agricultural use is appraised on what it produces rather than on what it would fetch. The annual tax bill can be a small fraction of what the same acreage would otherwise carry.
What triggers the recovery. A change of use. If the land stops being farmed or grazed and becomes something else, the appraisal district assesses the difference between what was paid and what would have been paid, for the three years preceding the change, with interest.
Who pays it. Whoever owns the land when the use changes. If you sell to a buyer who intends to keep farming it, nothing is triggered. If you sell to a developer who intends to build, it is, and whether that cost falls to you or to them is a matter for the contract.
What to do about it. Establish before you agree a price whether your land currently carries an agricultural valuation, and ask any buyer what they intend to do with it. A sale price that looks strong can be materially worse once a rollback assessment is accounted for, and by then the contract is signed.
Conventional house on a normal lot: list it, Alvin's market at 66 days will take it. Ag-valued acreage: settle the rollback question before you agree a price, not after.
Selling Land Where There Are No Comparable Sales
The second problem out here is evidence. Appraisers value by finding recent sales of similar property nearby, and around Algoa there frequently are not any.
Parcels differ on acreage, frontage, access, drainage, whether they are cleared and what is standing on them. Two properties a mile apart can be genuinely incomparable. The nearest true match may have sold two years ago and five miles away.
An appraiser facing that has to be conservative, so the valuation comes in under the contract price, the lender will only lend against the valuation, and the buyer withdraws or has to find the shortfall in cash. Most withdraw. You relist, having lost two months, and the next financed buyer meets the same wall.
Cash removes the appraisal from the transaction entirely. That is not a sales pitch so much as an explanation of why rural sellers who have had two contracts collapse tend to stop trying to sell to financed buyers.
