What a Hot Tub Needs at the New House: Pad, Deck and HOA
A level, continuous base that carries the tub full rather than empty, a permitted circuit, and in covenant suburbs the HOA's approval: Hot Spring's Grandee weighs 790 pounds dry but 5,810 pounds filled and occupied, about 92 pounds per square foot, while the standard prescriptive deck guide is sized for a 40 pound live load.
What the new spot needs, in the order it usually happens
HOA approval
Architectural committeeIn covenant suburbs, first. Douglas County recommends it before the permit application.
Base
Concrete contractor or structural engineerLevel, continuous, and rated for the tub full. A prescriptive deck is sized for a 40 pound per square foot live load.
Permit and circuit
Registered electrical contractorA GFCI-protected circuit with a disconnect in sight of the tub, inspected before the tub arrives.
Placement
Spa moverLast, once there is somewhere for the tub to go.
A filled Hot Spring Grandee loads about 92 pounds per square foot. Hot Spring; American Wood Council DCA 6; Douglas County Building Division.
The weight that matters is the full one
Everyone plans for the weight of the tub on moving day. The base has to carry it on every day after that. Hot Spring lists its Grandee at 790 pounds dry and 5,810 pounds filled, counting 455 gallons of water and a 175 pound adult in every seat. Water weighs about 8.3 pounds a gallon, according to the U.S. Geological Survey, which is why the number jumps. Spread over the Grandee's 8 foot 4 inch by 7 foot 7 inch footprint, the filled weight works out to about 92 pounds per square foot, and Arctic Spas' manual asks for balconies, concrete pads and decks able to support at least 146.
Is your deck strong enough?
Probably not as built, unless it was built for a tub. The American Wood Council's prescriptive deck guide, DCA 6, sizes decks for a 40 pound per square foot live load and a 10 pound dead load, and says concentrated loads such as hot tubs are beyond its scope. Aurora's building division publishes the same 40 pound deck load in its design criteria. Westminster requires an engineer's stamped letter verifying the deck can take the extra load for any hot tub on an elevated platform, and Boulder wants hot tub loads on elevated decks included in the structural engineer's calculations. The person who answers this question is a structural engineer, not a mover.
What a ground-level pad needs
On the ground the rule is level and continuous. Resort Hot Tubs' warranty requires a uniformly firm, continuous and level surface, recommends a concrete pad at least 4 inches thick with steel reinforcing bars, and excludes damage from failing to provide even support. Arctic Spas treats damage from insufficiently prepared or uneven ground as abuse, and asks for at least 24 inches of access around the spa for service. If the pad or the trench for the new circuit means digging, Colorado 811 has to be contacted at least three business days before, whatever the size of the job, and its free locate service does not include privately owned utilities.
Where on the lot it is allowed to sit
The spot you picked has to pass the town, not just the eye. Denver requires a boundary survey if the spa or any of its equipment is within 3 feet of the property line, and a scaled site plan with distances to lot lines and structures. Boulder lists setbacks by zone, such as 25 feet from the front property line in RL-1. Westminster's site plan has to show any overhead wires above the tub and their height over the water, any glazing within 5 feet, and a barrier or lockable cover meeting ASTM F1346. Lakewood asks for either a lockable spa cover or a fenced yard, with fences at least 48 inches high and self-latching gates. The electrical code adds its own spacing: the disconnect has to sit within sight of the tub and at least 5 feet from it.
HOA rules in the covenant suburbs
In the newer south metro suburbs the HOA can decide the spot before the town does, and these are newer places: the Census Bureau estimates only 1.9% of Highlands Ranch homes and 2.7% of Parker homes were built before 1980. The Highlands Ranch Community Association's guidelines say a hot tub may not exceed 8 feet by 8 feet, must sit in a side or rear yard at least 5 feet off any property line, and must be screened from neighbors, and that architectural committee approval may be required. Swim spas are limited to 17 by 8 feet, rear yard only. Those numbers bite: Hot Spring's Grandee is 8 feet 4 inches long. Douglas County recommends HOA approval before the permit application, and Parker will supply a copy of your approved plot plan from Community Development if your HOA asks for one.
When the spot is ready, and when you do not need a mover yet
If the new house already has a level pad and a spa circuit with GFCI protection, and the tub fits the HOA's limits, the move may be the only job left. If it has none of those, you do not need a mover yet. You need the HOA's answer, the pad poured or the deck checked by an engineer, and the electrician's permit and circuit, and the move goes last. Tell us what the new spot has today and we will tell you which of those is still outstanding, then connect you with a vetted local spa mover, licensed and insured, once there is somewhere for the tub to go.
Sources used in this guide
Hot Spring lists its Grandee hot tub at 8 feet 4 inches by 7 feet 7 inches by 38 inches, holding 455 gallons, with a dry weight of 790 pounds and a filled weight of 5,810 pounds including water and a 175 pound adult in every seat.
Source: Hot Spring Spas, accessed 2026-09-22
The U.S. Geological Survey lists water at 70F as weighing 62.3 pounds per cubic foot, which is about 8.3 pounds per U.S. gallon.
Source: U.S. Geological Survey, Water Science School, accessed 2026-09-22
Spread over its 8 foot 4 inch by 7 foot 7 inch footprint, Hot Spring's published 5,810 pound filled weight for the Grandee works out to about 92 pounds per square foot.
Source: Hot Spring Spas, accessed 2026-09-22
Arctic Spas' owner's manual states that balconies, concrete pads and decks should be built to code and be able to support at least 146 pounds per square foot, and that the customer must provide at least 24 inches of access all around the spa for service.
Source: Arctic Spas, Owner's Manual (International), accessed 2026-09-22
The American Wood Council's prescriptive deck guide, DCA 6, sizes its members for a 40 pound per square foot live load and 10 pound dead load, and states that concentrated loads such as hot tubs are beyond its scope.
Source: American Wood Council, DCA 6 Prescriptive Residential Wood Deck Construction Guide, accessed 2026-09-22
Aurora's building division publishes design criteria of a 36 inch frost depth, a 34 pound per square foot ground snow load and a 40 pound per square foot deck load, and requires hired contractors to be licensed by the City of Aurora.
Source: City of Aurora, Building Division, Do It Right home improvement handbook, accessed 2026-09-22
Westminster requires an engineer's stamped letter verifying that a deck can handle the additional load for any hot tub placed on an elevated platform such as a deck, and the site plan must state whether the base is gravel, concrete or wood deck.
Source: City of Westminster, Building Division, accessed 2026-09-22
Boulder's residential building permit guide requires additional deck or floor loads, including hot tub installation on elevated decks or floors, to be identified and included in the structural engineer's calculations.
Source: City of Boulder, Planning and Development Services, accessed 2026-09-22
Resort Hot Tubs' warranty requires the spa to sit on a uniformly firm, continuous and level surface, recommends a concrete pad at least 4 inches thick with steel reinforcing bars, and excludes damage from failing to provide even, proper support.
Source: Resort Hot Tubs, accessed 2026-09-22
Arctic Spas' warranty treats any damage caused by moving the spa, or by improper installation including insufficiently prepared or uneven ground, as abuse, and states that its warranties terminate on transfer of ownership from the original customer.
Source: Arctic Spas, accessed 2026-09-22
Colorado 811 states that anyone digging, whatever the size of the project, is legally required to contact it at least three business days before digging, and that privately owned utilities are not included in its free locate service.
Source: Colorado 811, accessed 2026-09-22
Denver's pool, spa and water feature permit guidance requires a boundary survey if any of the equipment or the pool is within 3 feet of the property line, and a scaled site plan showing distances to lot lines and structures.
Source: City and County of Denver, Community Planning and Development, accessed 2026-09-22
Boulder's residential pool and spa permit guide requires a site survey stamped by a Colorado licensed land surveyor and a renewable energy offset form for heated spas, and lists setbacks by zone, such as 25 feet from the front property line in RL-1.
Source: City of Boulder, Planning and Development Services, accessed 2026-09-22
Westminster's hot tub site plan must show any overhead electrical wires that pass over the tub with their height above the water, any glazing within 5 feet of the tub, and a barrier or lockable safety cover complying with ASTM F1346.
Source: City of Westminster, Building Division, accessed 2026-09-22
Lakewood requires every property with a pool or spa to have either a lockable spa or hot tub cover or a fenced yard, with fences at least 48 inches high and self-latching gates.
Source: City of Lakewood, Planning and Public Works, accessed 2026-09-22
The Highlands Ranch Community Association's Residential Improvement Guidelines say hot tubs may not exceed 8 feet by 8 feet, must be in side or rear yards at least 5 feet off any property line, and must be screened so they are not immediately visible to neighbors, and that architectural committee approval may be required.
Source: Highlands Ranch Community Association, Residential Improvement Guidelines (adopted October 2024, updated June 2025), accessed 2026-09-22
The Highlands Ranch Community Association's guidelines say swim spas should not exceed 17 feet by 8 feet, must be installed in the rear yard with screening, and must be at least 5 feet off any property line.
Source: Highlands Ranch Community Association, Residential Improvement Guidelines (adopted October 2024, updated June 2025), accessed 2026-09-22
Douglas County's building division recommends obtaining HOA or architectural control committee approval, where applicable, before applying for a pool or spa permit.
Source: Douglas County Building Division, accessed 2026-09-22
The Town of Parker tells homeowners whose HOA asks for a plan of proposed improvements that they can get a copy of the approved plot plan for their property from the Community Development Department.
Source: Town of Parker, HOA Resources, accessed 2026-09-22
The Census Bureau's 2020 to 2024 American Community Survey estimates that 78.1% of occupied homes in Highlands Ranch CDP are owner-occupied, 74.9% of housing units are single-family detached, and about 1.9% of units were built before 1980.
Source: U.S. Census Bureau, American Community Survey 2020 to 2024 5-year estimates, table DP04, accessed 2026-09-22
The Census Bureau's 2020 to 2024 American Community Survey estimates that 71.8% of occupied homes in Parker town are owner-occupied, 70.0% of housing units are single-family detached, and about 2.7% of units were built before 1980.
Source: U.S. Census Bureau, American Community Survey 2020 to 2024 5-year estimates, table DP04, accessed 2026-09-22
National Electrical Code section 680.13 requires a maintenance disconnect for spa and hot tub equipment that is readily accessible, within sight of the equipment and at least 5 feet horizontally from the inside walls of the spa or hot tub, unless a permanent barrier creates a reach path of 5 feet or more.
Source: New York Electrical Inspectors Association, reproduction of 2017 NFPA 70 Article 680, accessed 2026-09-22
National Electrical Code section 680.44 requires the outlet supplying a self-contained or packaged spa or hot tub to be protected by a ground-fault circuit interrupter, unless a listed unit is marked as having integral GFCI protection.
Source: New York Electrical Inspectors Association, reproduction of 2017 NFPA 70 Article 680, accessed 2026-09-22
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