Edit Model: Triplex

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Basic Information

Model Name

Status

Square Footage

Number of Floors

Shell Only

This model is a shell only

Description

<h2>Triplex Plan (Overall Footprint 60&prime;&times;40&prime;)</h2>

<p>Each unit is <strong>20&prime; wide &times; 40&prime; deep</strong>, 10&prime; wall height, sharing party walls.</p>

<h3>Unit Layout (per 20&prime;&times;40&prime; module)</h3>

<ol>
	<li>
	<p><strong>Front Porch</strong> (6&prime; deep, full 20&prime; width)</p>
	</li>
	<li>
	<p><strong>Living Room</strong> (20&prime;&times;16&prime;)</p>

<ul>
		<li>
		<p>Front-facing windows/door centered on 20&prime; wall</p>
		</li>
	</ul>
	</li>
	<li>
	<p><strong>Half Bath</strong> (4&prime;&times;6&prime;)</p>

<ul>
		<li>
		<p>Immediately off living area, near one side to align wet walls</p>
		</li>
	</ul>
	</li>
	<li>
	<p><strong>Pantry/Laundry Closet</strong> (3&prime;&times;6&prime;)</p>

<ul>
		<li>
		<p>Adjacent to half bath for shared plumbing</p>
		</li>
	</ul>
	</li>
	<li>
	<p><strong>Kitchen</strong> (10&prime;&times;12&prime;)</p>

<ul>
		<li>
		<p>L-shaped or straight run along party wall</p>
		</li>
		<li>
		<p>Opens to living area</p>
		</li>
	</ul>
	</li>
	<li>
	<p><strong>Hall (4&prime; wide)</strong></p>

<ul>
		<li>
		<p>Runs parallel to party wall, connecting kitchen to bedroom and full bath</p>
		</li>
	</ul>
	</li>
	<li>
	<p><strong>Full Bath</strong> (8&prime;&times;9&prime;)</p>

<ul>
		<li>
		<p>Off hall, backs up to pantry/laundry plumbing wall</p>
		</li>
	</ul>
	</li>
	<li>
	<p><strong>Bedroom</strong> (12&prime;&times;13&prime;)</p>

<ul>
		<li>
		<p>At rear of unit, window onto backyard/porch</p>
		</li>
	</ul>
	</li>
	<li>
	<p><strong>Rear Porch</strong> (6&prime; deep, 20&prime; wide)</p>

<ul>
		<li>
		<p>Accessed from bedroom or hall</p>
		</li>
	</ul>
	</li>
</ol>

<h3>Alignment &amp; Mirroring</h3>

<ul>
	<li>
	<p><strong>Wet walls</strong> (half-bath, laundry, full-bath) all line up on the two party walls.</p>
	</li>
	<li>
	<p><strong>Units 1 and 3</strong> are mirrored copies of Unit 2 around the central party wall.</p>
	</li>
	<li>
	<p><strong>Living rooms</strong> form three contiguous 20&prime;-wide bays along the front porch.</p>
	</li>
</ul>

<h3>1. Exterior Wall Areas</h3>

<table>
	<thead>
		<tr>
			<th>Wall</th>
			<th>Length (ft)</th>
			<th>Height (ft)</th>
			<th>Area (sq ft)</th>
		</tr>
	</thead>
	<tbody>
		<tr>
			<td>Front</td>
			<td>60</td>
			<td>10</td>
			<td>600</td>
		</tr>
		<tr>
			<td>Rear</td>
			<td>60</td>
			<td>10</td>
			<td>600</td>
		</tr>
		<tr>
			<td>Left side</td>
			<td>40</td>
			<td>10</td>
			<td>400</td>
		</tr>
		<tr>
			<td>Right side</td>
			<td>40</td>
			<td>10</td>
			<td>400</td>
		</tr>
		<tr>
			<td><strong>Total</strong></td>
			<td><strong>200</strong></td>
			<td>&nbsp;</td>
			<td><strong>2000</strong></td>
		</tr>
	</tbody>
</table>

<hr />
<h3>2. Interior Partition Areas</h3>

<table>
	<thead>
		<tr>
			<th>Partition Type</th>
			<th>Total Length (ft)</th>
			<th>Height (ft)</th>
			<th>Area (sq ft)</th>
		</tr>
	</thead>
	<tbody>
		<tr>
			<td>Living⇌Kitchen (3 @ 24 ft)</td>
			<td>72</td>
			<td>10</td>
			<td>720</td>
		</tr>
		<tr>
			<td>Kitchen⇌Half Bath (3 @ 4 ft)</td>
			<td>12</td>
			<td>10</td>
			<td>120</td>
		</tr>
		<tr>
			<td>Half Bath⇌Pantry (3 @ 6 ft)</td>
			<td>18</td>
			<td>10</td>
			<td>180</td>
		</tr>
		<tr>
			<td>Pantry⇌Hallway (3 @ 3 ft)</td>
			<td>9</td>
			<td>10</td>
			<td>90</td>
		</tr>
		<tr>
			<td>Hallway⇌Full Bath (3 @ 6 ft)</td>
			<td>18</td>
			<td>10</td>
			<td>180</td>
		</tr>
		<tr>
			<td>Full Bath⇌Bedroom (3 @ 8 ft)</td>
			<td>24</td>
			<td>10</td>
			<td>240</td>
		</tr>
		<tr>
			<td>Bedroom⇌Entry (3 @ 13 ft)</td>
			<td>39</td>
			<td>10</td>
			<td>390</td>
		</tr>
		<tr>
			<td><strong>Total</strong></td>
			<td><strong>192</strong></td>
			<td>&nbsp;</td>
			<td><strong>1920</strong></td>
		</tr>
	</tbody>
</table>

<hr />
<h3>3. Roof Area (6:12 Pitch)</h3>

<ul>
	<li>
	<p><strong>Plan dimensions</strong>: 60&prime; (ridge length) &times; 40&prime; (span)</p>
	</li>
	<li>
	<p><strong>Half-span</strong>: 20&prime; &rarr; rise = 20&times;(6/12)=10&prime;</p>
	</li>
	<li>
	<p><strong>Rafter length</strong>: &radic;(20&sup2;+10&sup2;) &asymp; 22.36&prime;</p>
	</li>
	<li>
	<p><strong>Slope area (each side)</strong>: 60&prime;&times;22.36&prime; &asymp; 1341.6 sq ft</p>
	</li>
	<li>
	<p><strong>Total roof</strong>: &asymp; 2683 sq ft</p>
	</li>
</ul>

<table>
	<thead>
		<tr>
			<th>Slope</th>
			<th>Plan Width (ft)</th>
			<th>Rafter Len (ft)</th>
			<th>Area (sq ft)</th>
		</tr>
	</thead>
	<tbody>
		<tr>
			<td>Left side</td>
			<td>60</td>
			<td>22.36</td>
			<td>1341.6</td>
		</tr>
		<tr>
			<td>Right side</td>
			<td>60</td>
			<td>22.36</td>
			<td>1341.6</td>
		</tr>
		<tr>
			<td><strong>Total</strong></td>
			<td>&nbsp;</td>
			<td>&nbsp;</td>
			<td><strong>2683</strong></td>
		</tr>
	</tbody>
</table>

<hr />
<h3>4. Door &amp; Window Count</h3>

<table>
	<thead>
		<tr>
			<th>Component</th>
			<th>Qty</th>
		</tr>
	</thead>
	<tbody>
		<tr>
			<td><strong>Exterior entry doors</strong></td>
			<td>6</td>
		</tr>
		<tr>
			<td><strong>Interior doors</strong></td>
			<td>12</td>
		</tr>
		<tr>
			<td><strong>Exterior windows</strong></td>
			<td>9</td>
		</tr>
	</tbody>
</table>

<ul>
	<li>
	<p>Windows: 2&times; living-room front + 1&times; bedroom rear per unit</p>
	</li>
	<li>
	<p>Interior doors: half-bath, pantry, full-bath, bedroom &times;3 units</p>
	</li>
</ul>

<hr />
<h3>5. MEP Component Quantities</h3>

<table>
	<thead>
		<tr>
			<th>Component</th>
			<th>Qty</th>
		</tr>
	</thead>
	<tbody>
		<tr>
			<td>Toilets (&frac12; + full)</td>
			<td>6</td>
		</tr>
		<tr>
			<td>Lavatory sinks (&frac12;/full)</td>
			<td>6</td>
		</tr>
		<tr>
			<td>Kitchen sinks</td>
			<td>3</td>
		</tr>
		<tr>
			<td>Showers/Tubs</td>
			<td>3</td>
		</tr>
		<tr>
			<td>Washer/Dryer stacks</td>
			<td>3</td>
		</tr>
		<tr>
			<td>Water heaters</td>
			<td>3</td>
		</tr>
		<tr>
			<td>HVAC units</td>
			<td>3</td>
		</tr>
		<tr>
			<td>Electrical panels</td>
			<td>3</td>
		</tr>
	</tbody>
</table>

<h3>1. Exterior Wall Areas</h3>

<hr />
<h3>2. Interior Partition Areas</h3>

<hr />
<h3>3. Roof Area (6:12 Pitch)</h3>

<hr />
<h3>4. Door &amp; Window Count</h3>

<ul>
	<li>
	<p>Windows: 2&times; living-room front + 1&times; bedroom rear per unit</p>
	</li>
	<li>
	<p>Interior doors: half-bath, pantry, full-bath, bedroom &times;3 units</p>
	</li>
</ul>

<hr />
<h3>5. MEP Component Quantities</h3>

<h2>Cost per Square Foot Ranges</h2>

<table>
	<thead>
		<tr>
			<th>Category</th>
			<th>Cost Range ($/sq ft)</th>
			<th>Notes / Source</th>
		</tr>
	</thead>
	<tbody>
		<tr>
			<td><strong>House construction in Alabama</strong></td>
			<td>90 &ndash; 140</td>
			<td>Custom homes, statewide average <a href="https://www.houzeo.com/blog/how-much-does-it-cost-to-build-a-house-alabama/?utm_source=chatgpt.com" target="_blank">Houzeo</a></td>
		</tr>
		<tr>
			<td><strong>Low-rise multifamily (US)</strong></td>
			<td>150 &ndash; 240</td>
			<td>1&ndash;3 story apartment buildings <a href="https://apxconstructiongroup.com/how-much-does-it-cost-to-build-an-apartment-complex/?utm_source=chatgpt.com" target="_blank">APX Construction Group</a></td>
		</tr>
		<tr>
			<td><strong>Tertiary market adjustment (&ndash;20%)</strong></td>
			<td>120 &ndash; 190</td>
			<td>Apply ~20% discount for smaller markets vs. national avg</td>
		</tr>
		<tr>
			<td><strong>Projected Montgomery triplex</strong></td>
			<td><strong>110 &ndash; 150</strong></td>
			<td>Reasonable range for 3-unit, SIP-framed triplex in Montgomery AL</td>
		</tr>
	</tbody>
</table>

<hr />
<h3>Narrative (Cut-and-Paste)</h3>

<pre>

&nbsp;</pre>

<p><code>1. House construction in Alabama: $90&ndash;140 / sq ft :contentReference[oaicite:2]{index=2} 2. National low-rise multifamily: $150&ndash;240 / sq ft :contentReference[oaicite:3]{index=3} 3. Adjust for tertiary market (&ndash;20%): $120&ndash;190 / sq ft 4. Montgomery AL reasonable triplex estimate: $110&ndash;150 / sq ft </code></p>

<p>Use <strong>$110&ndash;150 / sq ft</strong> as your budgeting range for the vertical component of affordable, SIP-framed, 20&prime;&times;40&prime; triplex units in Montgomery.<br />
<br />
&nbsp;</p>

<p>Thought for 12 seconds</p>

<p><strong>Value-Engineering to Hit $110&ndash;150 / sq ft</strong></p>

<p>To close the gap, apply focused measures that shave several dollars per square foot. Below is a table of targeted strategies with rough savings estimates:</p>

<table>
	<thead>
		<tr>
			<th>VE Strategy</th>
			<th>Savings ($/sq ft)</th>
		</tr>
	</thead>
	<tbody>
		<tr>
			<td>Use SIP underside as finished ceiling (no drywall)</td>
			<td>0.80 &ndash; 1.20</td>
		</tr>
		<tr>
			<td>Switch to horizontal-sliding vinyl windows</td>
			<td>0.20 &ndash; 0.40</td>
		</tr>
		<tr>
			<td>Low-voltage LED fixtures with integrated controls</td>
			<td>0.10 &ndash; 0.30</td>
		</tr>
		<tr>
			<td>Mini-split HVAC (no ductwork, simplified install)</td>
			<td>1.00 &ndash; 2.00</td>
		</tr>
		<tr>
			<td>Reduce interior partition length by 10 %</td>
			<td>0.30 &ndash; 0.50</td>
		</tr>
		<tr>
			<td>Bulk-purchase finishes &amp; fixtures</td>
			<td>1.00 &ndash; 2.00</td>
		</tr>
		<tr>
			<td>Optimize layout (5 % envelope reduction)</td>
			<td>0.25 &ndash; 0.75</td>
		</tr>
		<tr>
			<td><strong>Total Potential Savings</strong></td>
			<td><strong>3.65 &ndash; 7.15</strong></td>
		</tr>
	</tbody>
</table>

<hr />
<h3>Revised Vertical Cost Range</h3>

<ul>
	<li>
	<p><strong>Baseline</strong>: $110 &ndash; 150 / sq ft</p>
	</li>
	<li>
	<p><strong>Less VE Savings</strong>: &ndash;$3.65 &ndash; 7.15</p>
	</li>
	<li>
	<p><strong>New Range</strong>: <strong>$102 &ndash; 146 / sq ft</strong></p>
	</li>
</ul>

<hr />
<p><strong>Next Steps</strong></p>

<ol>
	<li>
	<p>Validate each strategy&rsquo;s actual cost impact with subcontractors and suppliers.</p>
	</li>
	<li>
	<p>Bundle procurements (windows, lighting, HVAC) under one purchase order to maximize volume discounts.</p>
	</li>
	<li>
	<p>Pilot one unit to confirm installation efficiencies (ceiling finish, mini-splits) before full roll-out.</p>
	</li>
</ol>

<p>This targeted VE approach should bring your SIP-framed triplex comfortably within your $110&ndash;150 / sq ft budget.</p>