A hundred sites on paper. Forty the big rigs could use.

The subject was an older RV park on a well-located parcel, being acquired with a plan to reposition and raise rate. On paper it counted roughly a hundred sites, and the sponsor's model valued it on that count multiplied by a per-site figure drawn from market comps. But a large share of those sites were original to the park's mid-century build: short, back-in, thirty-amp, and partial-hookup. The all-in financing ran to roughly $3.5 million across the real estate, the site improvements, and a capital budget for upgrades, weighted toward the land and improvements.

The deal was structured for SBA 504 financing — the fit for a real-estate-heavy acquisition with a long-lived improvement program and owner-occupancy. A feasibility study had to support the projections and the repositioning, and the going-concern appraisal had to allocate land, site improvements, equipment, and business value.

The sponsor's model led with the site count: a hundred sites, a per-site value, a headline capacity that looked ample. The analytical question was whether all hundred sites were actually capable of earning, or whether the count overstated what the park could serve.

The intuitive way to value an RV park is the site count: a hundred sites times a per-site value, with the count driving both the revenue model and the valuation. On that logic the park had ample capacity and a straightforward value — a hundred income-producing sites on a good parcel. The headline count did the work.

It was also treating every site as equal when the market does not — because the rigs that pay the premium rates cannot fit on a short, thirty-amp, back-in site, and a count that includes those sites overstates what the park can actually earn.

Effective revenue capacity is set by the number of sites the premium rigs can actually use, not by the nominal count — and short, back-in, thirty-amp, partial-hookup sites do not serve the large motorhomes and fifth wheels that pay the highest rates. The modern big rigs — large Class A motorhomes and big fifth wheels, often forty feet and longer — require long pull-through pads, fifty-amp service, wider spacing, and full hookups; they simply cannot occupy an undersized thirty-amp back-in site built for the rigs of an earlier era. Those premium rigs are also the ones that pay the premium rates, the difference between a standard site in the forties or fifties of dollars a night and a premium pull-through well above that. So a park that counts a hundred sites but has only forty that are big-rig-capable has, for the purpose of the rates that drive revenue, roughly forty premium sites and sixty that are constrained to a lower rate, a narrower market, or — for the largest rigs — no rate at all. The nominal count overstates effective capacity in exactly the way a daycare's licensed capacity overstates its staffable capacity.

The inflection is that the hundred-site count was not the revenue base; the big-rig-capable count was, and the gap between them was both the reason the headline value was overstated and the opportunity the repositioning could capture. Re-underwritten on effective capacity, the park's current revenue reflected its forty premium sites and its constrained remainder, not a hundred equal sites. But the same analysis identified the value-add: converting a block of the short thirty-amp back-ins to fifty-amp full-hookup pull-throughs would raise both the rate those sites command and the effective big-rig capacity of the park, lifting net operating income and, as the rate normalized to the market, compressing the effective capitalization rate the acquisition was priced at. The bankable deal was underwritten on effective capacity today and on a costed, phased conversion that expanded it — not on a nominal count that assumed a capacity the park did not yet have. The relevant analysis was how many sites the premium rigs could use, and what it cost to make more of them usable.

Effective-capacity inventory. Every site was inventoried by length, electrical service, pull-through versus back-in configuration, and hookup completeness, so the count that drives premium rate — the big-rig-capable sites — was separated from the nominal total rather than assumed equal to it.

Rate by site capability. Nightly rate was modeled by site class — premium pull-through fifty-amp, standard full-hookup, and constrained thirty-amp or partial — so revenue reflected what each class of site actually commands rather than a blended rate applied to every site.

Current revenue on effective capacity. The park's existing revenue was rebuilt on its big-rig-capable count and its constrained remainder, isolating how much of the headline capacity was actually earning the premium rate and how much was rate-limited.

Costed, phased conversion. The upgrade of short thirty-amp back-ins to fifty-amp full-hookup pull-throughs was costed per site — pad extension, electrical service, spacing, and hookups — and phased, so the capacity and rate gains were tied to a real capital budget rather than assumed.

NOI and cap-rate effect. The conversion's effect on net operating income and on the effective capitalization rate was modeled as rate normalized toward the market, surfacing the value-add the repositioning captured and distinguishing it from the as-is value.

504 structure and going-concern allocation. The deal was sized against the 504's owner-occupancy and special-purpose equity requirements, with the going-concern appraisal's allocation among land, site improvements, equipment, and business value tied to the financing and the phased capital plan.

The credit file replaced a nominal site count with an effective-capacity inventory and explained why a hundred-site park earned like a forty-premium-site one until it was upgraded. The analysis separated sites by capability, modeled rate by class, rebuilt current revenue on effective capacity, and costed a phased conversion that expanded both capacity and rate. The 504 structure fit the real-estate-heavy acquisition and the long-lived improvement program, and the going-concern allocation clarified the collateral and the capital plan. The lender underwrote the deal on effective capacity today and a costed path to more of it, rather than on a count that overstated what the park could serve. The independent study answered the program's expectation by underwriting the capacity that actually earns, which is where RV park acquisitions are most often misjudged.

The 504 financing closed underwritten on effective big-rig capacity and a costed, phased conversion that expanded it — not on a nominal site count that assumed capacity the park did not yet have. The inflection was not that the park was small; it had a hundred sites. It was that only a fraction of them could serve the rigs that pay the premium rates, so the headline count overstated both the revenue and the value, and the bankable deal was the one that underwrote the capacity the market could actually use and the cost of building more of it.

• 01Effective capacity is set by big-rig-capable sites, not the nominal count. Short, back-in, thirty-amp, partial-hookup sites cannot serve the large motorhomes and fifth wheels that pay the premium rates.
• 02The premium rigs pay the premium rate. A count that includes sites those rigs cannot use overstates the revenue base in the same way a daycare's licensed capacity overstates its staffable capacity.
• 03The capability gap is the value-add. Converting short thirty-amp back-ins to fifty-amp full-hookup pull-throughs raises both the rate and the effective capacity, lifting net operating income and compressing the effective cap rate as rate normalizes.
• 04Underwrite effective capacity and a costed path to more of it. The bankable deal rests on the sites the market can use today and a phased, costed conversion — not on a nominal count that assumes capacity the park does not have.