Exhibit 21.1

SUBSIDIARIES OF THE REGISTRANT

JBG SMITH PROPERTIES

as of December 31, 2025

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| Entity | State of Organization
1 | 1101 Fern Street, L.L.C. | Delaware
2 | 1200 Eads Street LLC | Delaware
3 | 1200 Eads Street Sub LLC | Delaware
4 | 12100 Sunset Hills, L.L.C. | Delaware
5 | 1229-1231 25th Street LLC | Delaware
6 | 1241-1251 6th Street NE, L.L.C. | Delaware
7 | 1244 South Capitol Residential, L.L.C. | Delaware
8 | 1250 First Street Office, L.L.C. | Delaware
9 | 1263 First Street, L.L.C. | Delaware
10 | 1270 4th Street NE, L.L.C. | Delaware
11 | 1275 5th Street NE, L.L.C. | Delaware
12 | 1331 5th Street NE, L.L.C. | Delaware
13 | 1400 Eads Street LLC | Delaware
14 | 1460 Richmond Highway, L.L.C. | Delaware
15 | 1601 Fairfax Drive, L.L.C. | Delaware
16 | 1730 M, L.L.C. | Delaware
17 | 1900 CML, L.L.C. | Delaware
18 | 1900 Crystal Drive MT, L.L.C. | Delaware
19 | 1900 Crystal Drive, L.L.C. | Delaware
20 | 2000-01 SB, L.L.C. | Delaware
21 | 2000-2001 S. Bell ML, L.L.C. | Delaware
22 | 2011 Crystal Lessee, L.L.C. | Delaware
23 | 2100 Promote Plan, L.L.C. | Delaware
24 | 2100-2200 Crystal Drive Commercial Condominium Unit Owners Association, Inc. | Virginia
25 | 2101 L Employee Plan, L.L.C. | Delaware
26 | 220 S. 20th Street LLC | Delaware
27 | 220 S. 20th Street Member, L.L.C. | Delaware
28 | 2200 Clarendon, L.L.C. | Delaware
29 | 2300 Clarendon, L.L.C. | Delaware
30 | 2900 Potomac Avenue, L.L.C. | Delaware
31 | 2901 Main Line Boulevard, L.L.C. | Delaware
32 | 3150 Exchange Avenue, L.L.C. | Delaware
33 | 3151 Exchange Avenue, L.L.C. | Delaware
34 | 3330 Exchange Avenue, L.L.C. | Delaware
35 | 3331 Exchange Avenue, L.L.C. | Delaware
36 | 3450 Exchange Avenue, L.L.C. | Delaware
37 | 3451 Exchange Avenue, L.L.C. | Delaware
38 | 4747 Bethesda Venture, LLC | Delaware

39 | 50 Patterson Office, L.L.C. | Delaware
40 | 51 N 50 Patterson Holdings, L.L.C. | Delaware
41 | 51 N Residential, L.L.C. | Delaware
42 | 601 E. Glebe Road, L.L.C. | Delaware
43 | 7200 Wisconsin, L.L.C. | Delaware
44 | 7900 Wisconsin Residential, L.L.C. | Delaware
45 | Arna-Eads, L.L.C. | Delaware
46 | Ashley House Member, L.L.C. | Delaware
47 | Ashley House Residential, L.L.C. | Delaware
48 | Atlantic Residential A, L.L.C. | Delaware
49 | Atlantic Residential C, L.L.C. | Delaware
50 | Atlantic Retail B, L.L.C. | Delaware
51 | Ballpark Square REA Manager, Inc. | Delaware
52 | Blue Lion Cell 2, PC | District of Columbia
53 | Blue Lion Cell 3 IC, L.L.C. | District of Columbia
54 | Blue Lion PCC, LLC | District of Columbia
55 | CESC 1101 17th Street Limited Partnership | Maryland
56 | CESC 1101 17th Street Manager, L.L.C. | Delaware
57 | CESC 1101 17th Street, L.L.C. | Delaware
58 | CESC 1150 17th Street LLC | Delaware
59 | CESC 1150 17th Street Manager, L.L.C. | Delaware
60 | CESC 2101 L Street LLC | Delaware
61 | CESC Crystal Square Four L.L.C. | Delaware
62 | CESC Crystal/Rosslyn II, L.L.C. | Delaware
63 | CESC Crystal/Rosslyn L.L.C. | Delaware
64 | CESC District Holdings L.L.C. | Delaware
65 | CESC Downtown Member L.L.C. | Delaware
66 | CESC Engineering TRS, LLC | Delaware
67 | CESC Gateway One L.L.C. | Delaware
68 | CESC Gateway Square L.L.C. | Delaware
69 | CESC Gateway Two Limited Partnership | Virginia
70 | CESC Gateway Two Manager L.L.C. | Virginia
71 | CESC Gateway Two Member L.L.C. | Delaware
72 | CESC Gateway Two Venture L.L.C. | Delaware
73 | CESC Gateway/Square Member L.L.C. | Delaware
74 | CESC H Street L.L.C. | Delaware
75 | CESC Mall L.L.C. | Virginia
76 | CESC Mall Land L.L.C. | Delaware
77 | CESC One Democracy Plaza L.P. | Maryland
78 | CESC One Democracy Plaza Manager L.L.C. | Delaware
79 | CESC Park Five Land L.L.C. | Delaware
80 | CESC Park Five Manager L.L.C. | Virginia
81 | CESC Park Four Land L.L.C. | Delaware
82 | CESC Park Four Manager L.L.C. | Virginia

83 | CESC Park One Land L.L.C. | Delaware
84 | CESC Park One Manager L.L.C. | Delaware
85 | CESC Park Three Land L.L.C. | Delaware
86 | CESC Park Three Manager L.L.C. | Virginia
87 | CESC Park Two L.L.C. | Delaware
88 | CESC Park Two Land L.L.C. | Delaware
89 | CESC Plaza Five Limited Partnership | Virginia
90 | CESC Plaza Limited Partnership | Virginia
91 | CESC Plaza Manager L.L.C. | Virginia
92 | CESC Potomac Yard LLC | Delaware
93 | CESC Square L.L.C. | Virginia
94 | CESC TRS, L.L.C. | Delaware
95 | CESC Water Park L.L.C. | Virginia
96 | Charles E. Smith Commercial Realty L.P. | Virginia
97 | Clarendon Plaza L.L.C. | Delaware
98 | Crystal Drive Condominium Declarant, L.L.C. | Virginia
99 | Crystal Gateway 3 Owner Member, L.L.C. | Delaware
100 | Crystal Gateway 3 Owner, L.L.C. | Delaware
101 | Crystal Gateway 3 Venture, L.L.C. | Delaware
102 | Crystal Tech Fund LP | Delaware
103 | DC Portfolio Holdings, L.L.C. | Delaware
104 | Dulles View Drive, L.L.C. | Delaware
105 | Dulles View Venture, L.L.C. | Delaware
106 | DV Member, L.L.C. | Delaware
107 | East Entrance, L.L.C. | Virginia
108 | Falkland Preservation Member, L.L.C. | Delaware
109 | Falkland Preservation, L.L.C. | Delaware
110 | Falkland/REC Holdco Member, L.L.C. | Delaware
111 | Falkland/REC Holdco, L.L.C. | Delaware
112 | Fifth Crystal Park Associates Limited Partnership | Virginia
113 | First Crystal Park Associates Limited Partnership | Virginia
114 | Florida Avenue Residential, L.L.C. | Delaware
115 | Fort Totten North, L.L.C. | Delaware
116 | Fourth Crystal Park Associates Limited Partnership | Virginia
117 | H Street Building Corporation | Delaware
118 | H Street Management LLC | Delaware
119 | James House Member LLC | Delaware
120 | James House Residential, L.L.C. | Delaware
121 | JBG Associates, L.L.C. | Delaware
122 | JBG Core Venture I, L.P. | Delaware
123 | JBG SMITH Management Services, L.L.C. | Delaware
124 | JBG SMITH Properties | Maryland
125 | JBG SMITH Properties LP | Delaware
126 | JBG Urban, L.L.C. | Delaware

127 | JBG/1250 First Member, L.L.C. | Delaware
128 | JBG/1300 First Street, L.L.C. | Delaware
129 | JBG/1831 Wiehle, L.L.C. | Delaware
130 | JBG/1861 Wiehle Lessee, L.L.C. | Delaware
131 | JBG/55 New York Avenue, L.L.C. | Delaware
132 | JBG/6th Street Associates, L.L.C. | Delaware
133 | JBG/Asset Management, L.L.C. | Delaware
134 | JBG/BC Chase Tower, L.P. | Delaware
135 | JBG/BC GP, L.L.C. | Delaware
136 | JBG/BC Investor, L.P. | Delaware
137 | JBG/Bethesda Avenue, L.L.C. | Delaware
138 | JBG/Commercial Management, L.L.C. | Delaware
139 | JBG/Core I GP, L.L.C. | Delaware
140 | JBG/Core I LP, L.L.C. | Delaware
141 | JBG/Development Group, L.L.C. | Delaware
142 | JBG/Development Services, L.L.C. | Delaware
143 | JBG/Fund IX Transferred, L.L.C. | Delaware
144 | JBG/Fund VI Transferred, L.L.C. | Delaware
145 | JBG/Fund VII Transferred, L.L.C. | Delaware
146 | JBG/Fund VIII Transferred, L.L.C. | Delaware
147 | JBG/Fund VIII Trust | Maryland
148 | JBG/Landbay G Member, L.L.C. | Delaware
149 | JBG/Landbay G, L.LC. | Delaware
150 | JBG/L'Enfant Plaza Member, L.L.C. | Delaware
151 | JBG/L'Enfant Plaza Mezzanine, L.L.C. | Delaware
152 | JBG/Lionhead, L.L.C. | Delaware
153 | JBG/N & Patterson Member, L.L.C. | Delaware
154 | JBG/Residential Management, L.L.C. | Delaware
155 | JBG/Retail Management, L.L.C. | Maryland
156 | JBG/Tenant Services, L.L.C. | Delaware
157 | JBG/UDM Transferred, L.L.C. | Delaware
158 | JBG/West Half Residential Member, L.L.C. | Delaware
159 | JBG/Woodmont II, L.L.C. | Delaware
160 | JBGS Employee Company, L.LC. | Delaware
161 | JBGS/1235 South Clark, L.L.C. | Delaware
162 | JBGS/17th Street Holdings, L.P. | Delaware
163 | JBGS/17th Street, L.L.C. | Delaware
164 | JBGS/CES Management, L.L.C. | Delaware
165 | JBGS/CIM Wardman Owner Member, L.L.C. | Delaware
166 | JBGS/Commercial Realty GEN-PAR, L.L.C. | Delaware
167 | JBGS/Company Manager, L.L.C. | Delaware
168 | JBGS/Courthouse I, L.L.C. | Delaware
169 | JBGS/Courthouse II, L.L.C. | Delaware
170 | JBGS/Fund VIII REIT Management Services, L.L.C. | Delaware

171 | JBGS/LEO Employee Plan, L.L.C. | Delaware
172 | JBGS/Management OP, L.P. | Delaware
173 | JBGS/OP Management Services, L.L.C. | Delaware
174 | JBGS/Pentagon Plaza, L.L.C. | Virginia
175 | JBGS/Recap GP L.L.C. | Delaware
176 | JBGS/Recap, L.L.C. | Delaware
177 | JBGS/TRS, L.L.C. | Delaware
178 | JBGS/Waterfront Holdings, L.L.C. | Delaware
179 | Landbay G Potomac Yards Owners Association | Virginia
180 | LBF CE Owner, L.L.C. | Delaware
181 | LBF Declarant, L.L.C. | Delaware
182 | LBF NTV Investor Member, L.L.C. | Delaware
183 | LBG Declarant, L.L.C. | Delaware
184 | LEO Impact Capital, L.L.C. | Delaware
185 | LEO Impact Housing Fund Manager, L.L.C. | Delaware
186 | LEO Impact Housing Fund, L.L.C. | Delaware
187 | LEO Impact REIT, L.L.C. | Delaware
188 | LEO Investor Member, L.L.C. | Delaware
189 | Market Square Fairfax MM LLC | Delaware
190 | MTV Holdco, L.L.C. | Delaware
191 | National Landing Business Owners' Association, Inc. | Virginia
192 | National Landing Development, L.L.C. | Delaware
193 | New Kaempfer Waterfront LLC | Delaware
194 | North Glebe Office, L.L.C. | Delaware
195 | NTV Holdco, L.L.C. | Delaware
196 | Park One Member L.L.C. | Delaware
197 | PM Investor Member, L.L.C. | Delaware
198 | PM Mezz, L.L.C. | Delaware
199 | PM Venture I, L.L.C. | Delaware
200 | Potomac Creek Associates, L.L.C. | Delaware
201 | Potomac East Master Association, Inc. | Virginia
202 | Potomac East Mixed-Use Association, Inc. | Virginia
203 | Potomac House Member, L.L.C. | Delaware
204 | Potomac House Residential, L.L.C. | Delaware
205 | PY Landbay H, L.L.C. (fka JBG/Atlantic LP, L.L.C.) | Delaware
206 | PY RR Land, L.L.C. | Delaware
207 | RH Landbay S, L.L.C. | Delaware
208 | RH Parcel C1, L.L.C. | Delaware
209 | RH Parcel N1, L.L.C. | Delaware
210 | SEAD OP, L.L.C. | Delaware
211 | SEAD, L.L.C. | Delaware
212 | Sharon Crossing Preservation, L.L.C. | Delaware
213 | Sherman Avenue LLC | District of Columbia
214 | Third Crystal Park Associates Limited Partnership | Virginia

215 | Tysons Dulles Holdings, L.L.C. | Delaware
216 | Tysons Dulles Member, L.L.C. | Delaware
217 | Tysons Dulles Promote Plan, L.L.C. | Delaware
218 | Tysons Dulles Venture, L.L.C. | Delaware
219 | Washington CT Fund GP LLC | Delaware
220 | Washington Housing Initiative Impact Pool Workforce, L.L.C. | Delaware
221 | Washington Housing Initiative Impact Pool, L.L.C. | Delaware
222 | Washington Mart TRS, L.L.C. | Delaware
223 | Water Park Lessee, L.L.C. | Delaware
224 | Waterfront 375 M Street, LLC | Delaware
225 | Waterfront 425 M Street, LLC | Delaware
226 | West Half Residential II, L.L.C. | Delaware
227 | West Half Residential III, L.L.C. | Delaware

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